Apocynum cannabinum
Encyclopedia
Apocynum cannabinum is a perennial
herbaceous
plant that grows throughout much of North America
- in the southern half of Canada
and throughout the United States
. It is a poison
ous plant: Apocynum means "poisonous to dogs". All parts of the plant are poisonous and can cause cardiac arrest if ingested. The cannabinum in the scientific name and the common names Hemp Dogbane and Indian Hemp refer to its similarity to Cannabis
as a fiber plant (see Hemp
), rather than as a source of a psychoactive drug (see Cannabis (drug)
)
Although dogbane is poisonous to livestock, it likely got its name from its resemblance to a European species of the same name.
capable of causing skin blisters. The leaves
are opposite, simple
broad lanceolate
, 7–15 cm long and 3–5 cm broad, entire, and smooth on top with white hairs on the underside. The flower
s are produced in mid summer, with large sepals
, and a five-lobed white corolla.
s it can be invasive, growing from spreading roots. When growing among corn, Apocynum cannabinum can reduce yields by up to 10% and when growing among soybeans, by up to 40%. It can be controlled through mechanical means, although it is difficult to control with herbicides.
plant, a hyperaccumulator used to sequester lead
in its biomass
.
, to make hunting nets, fishing lines, clothing, and twine
. It is called qéemu qǽːmu in Nez Perce
and taxʷɨ́s in Sahaptin
.
, rheumatism
, intestinal worms, fever
, asthma
, and dysentery
.
Although the toxins from the plant can cause nausea
and catharsis
, it has also been used for slowing the pulse.
Perennial plant
A perennial plant or simply perennial is a plant that lives for more than two years. The term is often used to differentiate a plant from shorter lived annuals and biennials. The term is sometimes misused by commercial gardeners or horticulturalists to describe only herbaceous perennials...
herbaceous
Herbaceous
A herbaceous plant is a plant that has leaves and stems that die down at the end of the growing season to the soil level. They have no persistent woody stem above ground...
plant that grows throughout much of North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...
- in the southern half of Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...
and throughout the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
. It is a 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 plant: Apocynum means "poisonous to dogs". All parts of the plant are poisonous and can cause cardiac arrest if ingested. The cannabinum in the scientific name and the common names Hemp Dogbane and Indian Hemp refer to its similarity to Cannabis
Cannabis
Cannabis is a genus of flowering plants that includes three putative species, Cannabis sativa, Cannabis indica, and Cannabis ruderalis. These three taxa are indigenous to Central Asia, and South Asia. Cannabis has long been used for fibre , for seed and seed oils, for medicinal purposes, and as a...
as a fiber plant (see Hemp
Hemp
Hemp is mostly used as a name for low tetrahydrocannabinol strains of the plant Cannabis sativa, of fiber and/or oilseed varieties. In modern times, hemp has been used for industrial purposes including paper, textiles, biodegradable plastics, construction, health food and fuel with modest...
), rather than as a source of a psychoactive drug (see Cannabis (drug)
Cannabis (drug)
Cannabis, also known as marijuana among many other names, refers to any number of preparations of the Cannabis plant intended for use as a psychoactive drug or for medicinal purposes. The English term marijuana comes from the Mexican Spanish word marihuana...
)
Although dogbane is poisonous to livestock, it likely got its name from its resemblance to a European species of the same name.
Distribution and habitat
Apocynum cannabinum grows in open wooded areas, ditches, and hillsides, and prefers moist places.Description
Apocynum cannabinum grows up to 2 meters/6 feet tall. The stems are reddish and contain a milky latexLatex
Latex is the stable dispersion of polymer microparticles in an aqueous medium. Latexes may be natural or synthetic.Latex as found in nature is a milky fluid found in 10% of all flowering plants . It is a complex emulsion consisting of proteins, alkaloids, starches, sugars, oils, tannins, resins,...
capable of causing skin blisters. 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 opposite, simple
Leaf shape
In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...
broad lanceolate
Leaf shape
In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...
, 7–15 cm long and 3–5 cm broad, entire, and smooth on top with white hairs on the underside. The 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 are produced in mid summer, with large sepals
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...
, and a five-lobed white corolla.
Invasive species
In gardenGarden
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...
s it can be invasive, growing from spreading roots. When growing among corn, Apocynum cannabinum can reduce yields by up to 10% and when growing among soybeans, by up to 40%. It can be controlled through mechanical means, although it is difficult to control with herbicides.
Phytoremediation
Apocynum cannabinum is a phytoremediationPhytoremediation
Phytoremediation Phytoremediation Phytoremediation (from the Ancient Greek , and Latin (restoring balance or remediation) describes the treatment of environmental problems (bioremediation) through the use of plants that mitigate the environmental problem without the need to excavate the...
plant, a hyperaccumulator used to sequester lead
Lead
Lead is a main-group element in the carbon group with the symbol Pb and atomic number 82. Lead is a soft, malleable poor metal. It is also counted as one of the heavy metals. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed...
in its biomass
Biomass
Biomass, as a renewable energy source, is biological material from living, or recently living organisms. As an energy source, biomass can either be used directly, or converted into other energy products such as biofuel....
.
Fiber
Apocynum cannabinum was used as a source of fiber by Native AmericansNative Americans in the United States
Native Americans in the United States are the indigenous peoples in North America within the boundaries of the present-day continental United States, parts of Alaska, and the island state of Hawaii. They are composed of numerous, distinct tribes, states, and ethnic groups, many of which survive as...
, to make hunting nets, fishing lines, clothing, and twine
Twine
Twine is a light string or strong thread composed of two or more smaller strands or yarns twisted together. More generally, the term can be applied to any thin cord....
. It is called qéemu qǽːmu in Nez Perce
Nez Perce language
Nez Perce , also spelled Nez Percé, is a Sahaptian language related to the several dialects of Sahaptin . The Sahaptian sub-family is one of the branches of the Plateau Penutian family...
and taxʷɨ́s in Sahaptin
Sahaptin language
Sahaptin , Sħáptənəxw, is a Plateau Penutian language of the Sahaptian branch spoken in a section of the northwestern plateau along the Columbia River and its tributaries in southern Washington, northern Oregon, and southwestern Idaho....
.
Medicinal
It is also used in herbal medicine to treat syphilisSyphilis
Syphilis is a sexually transmitted infection caused by the spirochete bacterium Treponema pallidum subspecies pallidum. The primary route of transmission is through sexual contact; however, it may also be transmitted from mother to fetus during pregnancy or at birth, resulting in congenital syphilis...
, rheumatism
Rheumatism
Rheumatism or rheumatic disorder is a non-specific term for medical problems affecting the joints and connective tissue. The study of, and therapeutic interventions in, such disorders is called rheumatology.-Terminology:...
, intestinal worms, fever
Fever
Fever is a common medical sign characterized by an elevation of temperature above the normal range of due to an increase in the body temperature regulatory set-point. This increase in set-point triggers increased muscle tone and shivering.As a person's temperature increases, there is, in...
, 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 dysentery
Dysentery
Dysentery is an inflammatory disorder of the intestine, especially of the colon, that results in severe diarrhea containing mucus and/or blood in the faeces with fever and abdominal pain. If left untreated, dysentery can be fatal.There are differences between dysentery and normal bloody diarrhoea...
.
Although the toxins from the plant can cause nausea
Nausea
Nausea , is a sensation of unease and discomfort in the upper stomach with an involuntary urge to vomit. It often, but not always, precedes vomiting...
and catharsis
Catharsis
Catharsis or katharsis is a Greek word meaning "cleansing" or "purging". It is derived from the verb καθαίρειν, kathairein, "to purify, purge," and it is related to the adjective καθαρός, katharos, "pure or clean."-Dramatic uses:...
, it has also been used for slowing the pulse.