Delphinium is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of about 300 species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of perennial flowering plant

Flowering plant

The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...

s in the buttercup family Ranunculaceae

Ranunculaceae

Ranunculaceae are a family of about 1700 species of flowering plants in about 60 genera, distributed worldwide....

, native throughout the Northern Hemisphere

Northern Hemisphere

The Northern Hemisphere is the half of a planet that is north of its equator—the word hemisphere literally means “half sphere”. It is also that half of the celestial sphere north of the celestial equator...

 and also on the high mountains of tropical Africa

Africa

Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...

. The common name, larkspur, is shared with the closely related genus Consolida

Consolida

Consolida is a genus of about 40 species of annual flowering plants in the buttercup family Ranunculaceae, native from western Europe through the Mediterranean region east to central Asia...

. Molecular data show Consolida, as well as another segregate genus, Aconitella, are both embedded in Delphinium.

The leaves

Leaf

A leaf is an organ of a vascular plant, as defined in botanical terms, and in particular in plant morphology. Foliage is a mass noun that refers to leaves as a feature of plants....

 are deeply lobed with 3-7 toothed, pointed lobes in a palmate shape

Leaf shape

In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...

. The main flowering stem is erect, and varies greatly in size between the species, from 10 centimetres in some alpine

Alpine climate

Alpine climate is the average weather for a region above the tree line. This climate is also referred to as mountain climate or highland climate....

 species, up to 2 metres tall in the larger meadow

Meadow

A meadow is a field vegetated primarily by grass and other non-woody plants . The term is from Old English mædwe. In agriculture a meadow is grassland which is not grazed by domestic livestock but rather allowed to grow unchecked in order to make hay...

land species; it is topped with a raceme

Raceme

A raceme is a type of inflorescence that is unbranched and indeterminate and bears pedicellate flowers — flowers having short floral stalks called pedicels — along the axis. In botany, axis means a shoot, in this case one bearing the flowers. In a raceme, the oldest flowers are borne...

 of many flower

Flower

A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants . The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs...

s, varying in color from purple and blue to red, yellow or white. The flower has five petal-like sepal

Sepal

A sepal is a part of the flower of angiosperms . Collectively the sepals form the calyx, which is the outermost whorl of parts that form a flower. Usually green, sepals have the typical function of protecting the petals when the flower is in bud...

s which grow together to form a hollow pocket with a spur at the end, which gives the plant its name. Within the sepals are four true petal

Petal

Petals are modified leaves that surround the reproductive parts of flowers. They often are brightly colored or unusually shaped to attract pollinators. Together, all of the petals of a flower are called a corolla. Petals are usually accompanied by another set of special leaves called sepals lying...

s. The seed

Seed

A seed is a small embryonic plant enclosed in a covering called the seed coat, usually with some stored food. It is the product of the ripened ovule of gymnosperm and angiosperm plants which occurs after fertilization and some growth within the mother plant...

s are small and often shiny black. The plants flower from late spring to late summer, and are pollinated by butterflies

Butterfly

A butterfly is a mainly day-flying insect of the order Lepidoptera, which includes the butterflies and moths. Like other holometabolous insects, the butterfly's life cycle consists of four parts: egg, larva, pupa and adult. Most species are diurnal. Butterflies have large, often brightly coloured...

 and bumble bees. Most species are toxic

Poison

In the context of biology, poisons are substances that can cause disturbances to organisms, usually by chemical reaction or other activity on the molecular scale, when a sufficient quantity is absorbed by an organism....

. Despite the toxicity, Delphinium species are used as food plants by the larva

Larva

A larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...

e of some Lepidoptera

Lepidoptera

Lepidoptera is a large order of insects that includes moths and butterflies . It is one of the most widespread and widely recognizable insect orders in the world, encompassing moths and the three superfamilies of butterflies, skipper butterflies, and moth-butterflies...

 species, including the dot moth

Dot Moth

The Dot Moth is a moth of the family Noctuidae. It is found throughout Europe apart from the south-east.This is a very distinctive species with very dark brown, almost black, forewings marked with a large white stigma from which the species gets its common name. The hindwings are grey with a dark...

 and small angle shades

Small Angle Shades

The small angle shades is a moth of the family Noctuidae. It is distributed throughout Europe.As the common name suggests, this species is closely related to the angle shades , and is considerably smaller , but does not especially resemble that species...

.

Etymology

Other names are lark's heel by Shakespeare, lark's claw and knight's spur. The scientific name comes from the Latin

Latin

Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

 for dolphin

Dolphin

Dolphins are marine mammals that are closely related to whales and porpoises. There are almost forty species of dolphin in 17 genera. They vary in size from and , up to and . They are found worldwide, mostly in the shallower seas of the continental shelves, and are carnivores, mostly eating...

, alluding to the shape of the opening flower, from the Greek word delphis, a reference to the flower's resemblance to the bottle-like nose of the dolphin.

Distribution

The forking larkspur (Delphinium consolida) prefers chalky loam

Loam

Loam is soil composed of sand, silt, and clay in relatively even concentration . Loam soils generally contain more nutrients and humus than sandy soils, have better infiltration and drainage than silty soils, and are easier to till than clay soils...

s. It grows wild in cornfields, but has become very rare nowadays. The flowers are commonly purple, but a white variety exists, as well.

Baker's larkspur

Baker's larkspur

Baker's larkspur is a perennial herb in the buttercup family . It is endemic to California in the United States, where it is a federally listed endangered species...

 (Delphinium bakeri) and yellow larkspur (D. luteum), both native to very restricted areas of California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, are highly endangered species

Endangered species

An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters...

.

Cultivation and uses

Many species are cultivated as garden

Garden

A garden is a planned space, usually outdoors, set aside for the display, cultivation, and enjoyment of plants and other forms of nature. The garden can incorporate both natural and man-made materials. The most common form today is known as a residential garden, but the term garden has...

 plants and for flower arrangements, with numerous cultivar

Cultivar

A cultivar'Cultivar has two meanings as explained under Formal definition. When used in reference to a taxon, the word does not apply to an individual plant but to all those plants sharing the unique characteristics that define the cultivar. is a plant or group of plants selected for desirable...

s available.

Most are derived from D. elatum (D. x elatum), found in the Alps

Alps

The Alps is one of the great mountain range systems of Europe, stretching from Austria and Slovenia in the east through Italy, Switzerland, Liechtenstein and Germany to France in the west....

. Hybridisation was developed in 19th century France by Victor Lemoine

Victor Lemoine

Victor Lemoine was a celebrated and prolific French flower breeder who, among other accomplishments, created many of today's lilac varieties...

.

Common groups include Pacific Giant (Round Table), named after Arthurian characters, Dwarf Pacific, New Millenium and Magic Fountain.

All parts of the plant contain an alkaloid

Alkaloid

Alkaloids are a group of naturally occurring chemical compounds that contain mostly basic nitrogen atoms. This group also includes some related compounds with neutral and even weakly acidic properties. Also some synthetic compounds of similar structure are attributed to alkaloids...

, delphinine

Delphinine

Delphinine is a toxic alkaloid found in plants from the Delphinium family. It is related in structure and has similar effects to aconitine, acting as an allosteric modulator of voltage gated sodium channels, and producing hypotension, bradycardia and cardiac arrythmia. These effects make it highly...

, so are very poison

Poison

In the context of biology, poisons are substances that can cause disturbances to organisms, usually by chemical reaction or other activity on the molecular scale, when a sufficient quantity is absorbed by an organism....

ous, causing vomiting when eaten, and death in larger amounts. In small amounts, extracts of the plant have been used in herbal medicine

Herbalism

Herbalism is a traditional medicinal or folk medicine practice based on the use of plants and plant extracts. Herbalism is also known as botanical medicine, medical herbalism, herbal medicine, herbology, herblore, and phytotherapy...

. Gerard's

John Gerard

John Gerard aka John Gerarde was an English herbalist notable for his herbal garden and botany writing. In 1597 he published a large and heavily illustrated "Herball, or Generall Historie of Plantes", which went on to be the most widely circulated botany book in English in the 17th century...

 Herbal

Herbal

AThe use of a or an depends on whether or not herbal is pronounced with a silent h. herbal is "a collection of descriptions of plants put together for medicinal purposes." Expressed more elaborately — it is a book containing the names and descriptions of plants, usually with information on their...

reported drinking the seed of larkspur was thought to help against the stings of scorpion

Scorpion

Scorpions are predatory arthropod animals of the order Scorpiones within the class Arachnida. They have eight legs and are easily recognized by the pair of grasping claws and the narrow, segmented tail, often carried in a characteristic forward curve over the back, ending with a venomous stinger...

s, and that other poisonous animals could not move when covered by the herb, but does not believe it himself. Grieve

Maud Grieve

Sophia Emma Magdalene Grieve was the Principal and Founder of The Whins Medicinal and Commercial Herb School and Farm at Chalfont St. Peter in Buckinghamshire, England. Maud Grieve was a Fellow of the Royal Horticultural Society with an encyclopedic knowledge of medicinal plants...

's herbal

Herbal

AThe use of a or an depends on whether or not herbal is pronounced with a silent h. herbal is "a collection of descriptions of plants put together for medicinal purposes." Expressed more elaborately — it is a book containing the names and descriptions of plants, usually with information on their...

 reports that the seeds can be used against parasites, especially lice and their nit

Nit

* The egg of a louse* Head lice * A trivial detail; the object of nitpicking* Nit , a unit of luminance equivalent to one candela per square metre...

s in the hair. A tincture is used against asthma

Asthma

Asthma is the common chronic inflammatory disease of the airways characterized by variable and recurring symptoms, reversible airflow obstruction, and bronchospasm. Symptoms include wheezing, coughing, chest tightness, and shortness of breath...

 and dropsy. The juice of the flowers, mixed with alum

Alum

Alum is both a specific chemical compound and a class of chemical compounds. The specific compound is the hydrated potassium aluminium sulfate with the formula KAl2.12H2O. The wider class of compounds known as alums have the related empirical formula, AB2.12H2O.-Chemical properties:Alums are...

, gives a blue ink

Ink

Ink is a liquid or paste that contains pigments and/or dyes and is used to color a surface to produce an image, text, or design. Ink is used for drawing and/or writing with a pen, brush, or quill...

. The plant was connected to Saint Odile

Odile

St Odile of Alsace is a saint venerated in the Roman Catholic Church, although according to the current liturgical calendar her feastday is not officially commemorated. She is a patroness of good eyesight.She was the daughter of Etichon , Duke of Alsace. She was born blind...

, and in popular medicine was used against eye diseases. It was one of the herbs used on the feast of St. John, and as such, warded off lightning. In Transylvania

Transylvania

Transylvania is a historical region in the central part of Romania. Bounded on the east and south by the Carpathian mountain range, historical Transylvania extended in the west to the Apuseni Mountains; however, the term sometimes encompasses not only Transylvania proper, but also the historical...

, it was used to keep witches from the stables, probably because of its black color.

Larkspur, especially tall larkspur, is a significant cause of cattle poisoning on rangeland

Rangeland

Rangelands are vast natural landscapes in the form of grasslands, shrublands, woodlands, wetlands, and deserts. Types of rangelands include tallgrass and shortgrass prairies, desert grasslands and shrublands, woodlands, savannas, chaparrals, steppes, and tundras...

s in the western United States. Larkspur is more common in high-elevation areas, and many ranchers will delay moving cattle onto such ranges until late summer when the toxicity of the plants is reduced.
Death is through cardiotoxic and neuromuscular blocking effects, and can occur within a few hours of ingestion.

Species

Species include:

• Delphinium alabamicum: Alabama larkspur
• Delphinium alpestre: Colorado larkspur
• Delphinium altissimum
• Delphinium andersonii
  Delphinium andersonii
  Delphinium andersonii is a species of larkspur known as Anderson's larkspur. This wildflower is native to western North America where it can be found in the Great Basin and the Sierra Nevada. This is an erect perennial usually reaching about half a meter in height. It has small leaves on long...
  
  : Anderson's larkspur
• Delphinium andesicola: Chiricahua Mountain larkspur
• Delphinia antoninum: Tracy's larkspur
• Delphinium bakeri
  Baker's larkspur
  Baker's larkspur is a perennial herb in the buttercup family . It is endemic to California in the United States, where it is a federally listed endangered species...
  
  : Baker's delphinium
• Delphinium barbeyi: Subalpine larkspur
• Delphinium basalticum: Basalt larkspur
• Delphinium bicolor
  Delphinium bicolor
  Delphinium bicolor is a species of larkspur known as little larkspur and low larkspur. It is native to northwestern North America from British Columbia to South Dakota, where it grows in mountain forests and foothill scrub and prairie. This is a perennial herb growing from a thickly branching root...
  
  : Little larkspur
• Delphinium brachycentrum: Northern larkspur
• Delphinium brownii
• Delphinium brunonianum
• Delphinium bulleyanum
• Delphinium caeruleum
• Delphinium californicum
  Delphinium californicum
  Delphinium californicum is a species of larkspur known as California larkspur. This wildflower is endemic to California, where it is a resident of the chaparral slopes of the San Francisco Bay Area and Central Coast....
  
  : California larkspur
• Delphinium cardinale
  Delphinium cardinale
  Delphinium cardinale is a species of larkspur known by the common names scarlet larkspur and cardinal larkspur. This wildflower is native to California and Baja California, where it grows on coastal, inland, and desert chaparral slopes, such as the Colorado Desert, and the Peninsular and Transverse...
  
  
• Delphinium carolinianum: Carolina larkspur
• Delphinium cashmerianum
• Delphinium chamissonis: Chamisso's larkspur
• Delphinium cheilanthum
• Delphinium consolida
• Delphinium corymbosum
• Delphinium decorum
  Delphinium decorum
  Delphinium decorum is a species of larkspur known by the common names coastal larkspur and yellowtinge larkspur. This wildflower is endemic to California, where it grows on the slopes of the coastal ranges in the San Francisco Bay Area and north. It grows an erect stem which approaches half a meter...
  
  : Coastal larkspur
• Delphinium delavayi
• Delphinium denudatum
  Delphinium denudatum
  Delphinium denudatum Wall. is one of the important species of the genus Delphinium.-Habitat:Delphinium denudatum Wall. is found on the outer ranges of western Himalayas from Kashmir to Kumaon at a height between 8000 to 12000 feet above sea level....
  
  
• Delphinium depauperatum
  Delphinium depauperatum
  Delphinium depauperatum is a species of larkspur known by the common names slim larkspur and dwarf larkspur. This wildflower is native to western North America where it is found in mountain meadows. It grows from a short root and erects a stem usually under 40 centimeters in maximum height...
  
  : Slim larkspur
• Delphinium dictyocarpum
• Delphinium distichum: Twospike larkspur
• Delphinium duhmbergii
• Delphinium elatum: Candle larkspur
• Delphinium exaltatum : Tall Larkspur
• Delphinium fissum
• Delphinium formosum
• Delphinium geraniifolium: Clark Valley larkspur
• Delphinium geyeri: Geyer's larkspur
• Delphinium glareosum: Olympic larkspur

• Delphinium glaucescens: Smooth larkspur
• Delphinium glaucum
  Delphinium glaucum
  Delphinium glaucum is a species of larkspur known by the common names Sierra larkspur, mountain larkspur, and glaucous larkspur. This wildflower is native to western North America from Arizona to Alaska. It grows in moist mountainous environments, such as riverbanks and meadows...
  
  : Sierra larkpsur
• Delphinium gracilentum
  Delphinium gracilentum
  Delphinium gracilentum is a species of larkspur known by the common name pine forest larkspur. It is endemic to California, where it grows throughout the Sierra Nevada. This wildflower is usually around half a meter in maximum height, with leaves growing from the lowest third of the stem. The...
  
  : Pine forest larkspur
• Delphinium grandiflorum
  Delphinium grandiflorum
  Delphinium grandiflorum is a species of Delphinium known by the common name Siberian larkspur. It is native to Russia and China. There are several popular cultivars in many shades of bright blue which are grown as ornamental plants, including 'Blue Butterfly'. Like many other larkspurs, this plant...
  
  : Siberian larkspur
• Delphinium gypsophilum
  Delphinium gypsophilum
  Delphinium gypsophilum is a species of larkspur known by the common name Pinoche Creek larkspur. It is endemic to California, where it grows throughout the central part of the state in woodland and grassland. This wildflower generally reaches between one half and one meter in height...
  
  : Pinoche Creek larkspur
• Delphinium hansenii
  Delphinium hansenii
  Delphinium hansenii is a species of larkspur known by the common names Eldorado larkspur and Hansen's delphinium. It is endemic to California, where it grows in mountains, valleys, and desert from the southern Cascade Range to the Mojave Desert. This wildflower usually grows between one half and...
  
  : Eldorado larkspur
• Delphinium hesperium
  Delphinium hesperium
  Delphinium hesperium is a species of larkspur known by the common name foothill larkspur. It is also sometimes called western larkspur and coastal larkspur, but these names are less specific since other species share them. It is endemic to California, where it grows in woodland and grassland in the...
  
  : Foothill larkspur
• Delphinium hutchinsoniae
  Delphinium hutchinsoniae
  Delphinium hutchinsoniae is a rare species of larkspur known by the common names Monterey larkspur and Hutchinson's larkspur. It is endemic to California, where it is known only from Monterey County. This wildflower reaches a meter in height but is usually shorter...
  
  : Monterey larkspur
• Delphinium hybridum
• Delphinium inopinum
  Delphinium inopinum
  Delphinium inopinum is a species of larkspur known by the common name unexpected larkspur. It is endemic to the Sierra Nevada of California, where it is known mostly from rocky areas in open temperate coniferous forest habitat.-Description:...
  
  : Unexpected larkspur
• Delphinium leroyi
• Delphinium leucophaeum
• Delphinium likiangense
• Delphinium linarioides
• Delphinium lineapetalum: Thinpetal larkspur
• Delphinium luteum
  Delphinium luteum
  The endangered flower Delphinium luteum, the yellow larkspur, is a perennial of the buttercup family which is endemic to the rocky, foggy hillsides of coastal Sonoma County, California. As of 2005 there were about 200 individuals believed to be in existence...
  
  : Yellow larkspur
• Delphinium maackianum
• Delphinium macrocentron
• Delphinium madrense: Sierra Madre larkspur
• Delphinium menziesii: Menzies' larkspur
• Delphinium multiplex : Kittitas larkspur
• Delphinium muscosum
• Delphinium nelsonii
• Delphinium newtonianum: Newton's larkspur
• Delphinium novomexicanum: White Mountain larkspur
• Delphinium nudicaule
  Delphinium nudicaule
  Delphinium nudicaule is a flowering plant known by the common names red larkspur, orange larkspur, and canyon delphinium. It sends up long, stringy thin stems with few leaves and bears attractive larkspur flowers in shades of red and orange. It is native to the low elevation canyons, foothills, and...
  
  : Red larkspur
• Delphinium nuttallianum
  Delphinium nuttallianum
  Delphinium nuttallianum is a species of larkspur known by the common names twolobe larkspur and Nuttall's larkspur. It is widely distributed across western North America from California to Alberta. This wildflower has a white to pink erect stem usually not exceeding half a meter in height which may...
  
  : Twolobe larkspur
• Delphinium nuttallii: Upland larkspur
• Delphinium occidentale: Subalpine larkspur
• Delphinium oreganum
• Delphinium oxysepalum
• Delphinium parishii: Desert larkspur
• Delphinium parryi
  Delphinium parryi
  Delphinium parryi is a species of larkspur known by the common names San Bernardino larkspur and Parry's larkspur. It is native to Baja California and California from the San Francisco Bay Area south. This wildflower may approach a meter in maximum height. It has fuzzy stems and fuzzy, deeply lobed...
  
  : San Bernardino larkspur
• Delphinium patens
  Delphinium patens
  Delphinium patens is a species of larkspur known by the common names zigzag larkspur and spreading larkspur. It is a wildflower limited mainly to California. Plants grow typically 20 to 50 centimeters tall and bear up to 36 flowers each. The stems are mostly hairless, have reddish bases, and bears...
  
  : Zigzag larkspur
• Delphinium pavonaceum
• Delphinium peregrinum
• Delphinium pictum
• Delphinium polycladon
  Delphinium polycladon
  Delphinium polycladon is a species of larkspur known by the common name mountain marsh larkspur. It is native to the High Sierra Nevada and the White and Inyo Mountains of eastern California and far western Nevada, where it grows in wet sites in the talus...
  
  : Mountain marsh larkspur
• Delphinium przewalskii

• Delphinium purpusii
  Delphinium purpusii
  Delphinium purpusii is a rare species of larkspur known by the common names Kern County larkspur and rose-flowered larkspur. It is endemic to California where it is known only from Kern and Tulare Counties in the region where the Sierra Nevada meets the Mojave Desert. It grows on rocky cliffs and...
  
  : Kern County larkspur
• Delphinium pylzowii
• Delphinium ramosum: Mountain larkspur
• Delphinium recurvatum
  Delphinium recurvatum
  Delphinium recurvatum is a species of larkspur known by the common names Byron larkspur, recurved larkspur, and valley larkspur. It is endemic to California, where most of its historical range is in the Central Valley. The grasslands of the valley have been mostly claimed for development and...
  
  : Byron larkspur
• Delphinium requienii
• Delphinium robustum: Wahatoya Creek larkspur
• Delphinium roylei
• Delphinium sapellonis: Sapello Canyon larkspur
• Delphinium scaposum: Tall mountain larkspur
• Delphinium scopulorum
  Delphinium scopulorum
  Delphinium scopulorum, commonly known as the Glaucous Rocky Mountain Larkspur is found dominantly in upper elevations of moist meadows. It's a non-woody plant and has a perennial duration, indicating a yearly growth.- Distribution :...
  
  : Rocky Mountain larkspur
• Delphinium semibarbatum
• Delphinium speciosum
• Delphinium stachydeum
  Delphinium stachydeum
  Delphinium stachydeum is a species of larkspur known by the common name spiked larkspur. It is native to the Pacific Northwest and Great Basin of the United States, where it grows in sagebrush scrub and along the edges of mountain forest habitat where it meets prairie and plateau...
  
  : Spiked larkspur
• Delphinium staphisagria
  Delphinium staphisagria
  Delphinium staphisagria is a perennial plant of the family Ranunculaceae. This plant is also known as Lice-Bane or Stavesacre. All parts of this plant are highly toxic and should not be ingested in any quantity....
  
  
• Delphinium sutchuense
• Delphinium sutherlandii: Sutherland's larkspur
• Delphinium tatsienense
• Delphinium treleasei: Glade larkspur
• Delphinium tricorne: Dwarf larkspur
• Delphinium triste
• Delphinium trolliifolium
  Delphinium trolliifolium
  Delphinium trolliifolium is a species of larkspur known by the common names poison delphinium, cow poison, and Columbian larkspur. It is native to Oregon and northern California. This wildflower reaches one half to just over one meter in height. It has large, shiny, deeply lobed leaves...
  
  : Columbian larkspur
• Delphinium uliginosum
  Delphinium uliginosum
  Delphinium uliginosum is a species of larkspur known by the common names swamp larkspur and bog larkspur. It is endemic to California, where it is known from very localized populations in the Inner North Coast Ranges. It grows in chaparral, grassland, and other habitat in the hills, generally on...
  
  : Swamp larkspur
• Delphinium umbraculorum
  Delphinium umbraculorum
  Delphinium umbraculorum is a species of larkspur known by the common name umbrella larkspur. It is endemic to California, where it grows in the woodlands of the coastal mountain ranges from Monterey to Ventura Counties. It is a perennial herb producing an erect stem 40 to about 80 centimeters tall...
  
  : Umbrella larkspur
• Delphinium variegatum
  Delphinium variegatum
  Delphinium variegatum is a species of larkspur known by the common name Royal larkspur. It is endemic to California, where it grows in mountains, valley and coast in woodlands and grasslands...
  
  : Royal larkspur
• Delphinium verdunense
• Delphinium vestitum
• Delphinium villosum
• Delphinium virescens
• Delphinium viridescens: Wenatchee larkspur
• Delphinium viride
• Delphinium wootonii: Organ Mountain larkspur
• Delphinium xantholeucum: Yellow-white larkspur
• Delphinium yunnanense
• Delphinium zalil: Zalil