Perityle
Encyclopedia
Perityle is a genus
of flowering plants in the daisy family
(Asteraceae). They are known generally as rock daisies. This is a variable genus, with its members sharing few characteristics. They include small herb
s to spreading shrub
s and most bear yellow or white daisylike flower heads. The fruit is generally a flat seed with thickened margins which may or may not have a pappus
or scales. Plants of this genus are native to western North America
.
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 flowering plants in the daisy family
Asteraceae
The Asteraceae or Compositae , is an exceedingly large and widespread family of vascular plants. The group has more than 22,750 currently accepted species, spread across 1620 genera and 12 subfamilies...
(Asteraceae). They are known generally as rock daisies. This is a variable genus, with its members sharing few characteristics. They include small herb
Herb
Except in botanical usage, an herb is "any plant with leaves, seeds, or flowers used for flavoring, food, medicine, or perfume" or "a part of such a plant as used in cooking"...
s to spreading shrub
Shrub
A shrub or bush is distinguished from a tree by its multiple stems and shorter height, usually under 5–6 m tall. A large number of plants may become either shrubs or trees, depending on the growing conditions they experience...
s and most bear yellow or white daisylike flower heads. The fruit is generally a flat seed with thickened margins which may or may not have a pappus
Pappus (flower structure)
The pappus is the modified calyx, the part of an individual disk, ray or ligule floret surrounding the base of the corolla, in flower heads of the plant family Asteraceae. The pappus may be composed of bristles , awns, scales, or may be absent. In some species, the pappus is too small to see...
or scales. Plants of this genus are native to western 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...
.
Selected species
- Perityle aglossa – Bluff Rock Daisy
- Perityle ajoensis – Ajo Rock Daisy
- Perityle congesta – Grand Canyon Rock Daisy
- Perityle coronopifolia – Crowfoot Rock Daisy
- Perityle emoryiPerityle emoryiPerityle emoryi is a species of flowering plant in the aster family known by the common name Emory's rockdaisy. It is native to the Southwestern United States, Southern California, Northwest Mexico, and the Baja California Peninsula...
– Emory's Rock Daisy - Perityle incana – Guadalupe Island Rock Daisy
- Perityle intricata – Delicate Rock Daisy, Narrow-leaved Laphamia
- Perityle inyoensisPerityle inyoensisPerityle inyoensis is a rare species of flowering plant in the aster family known by the common names Inyo rockdaisy and Inyo laphamia. It is endemic to Inyo County, California, where it is known from just a few occurrences in the southern Inyo Mountains. Its habitat is dry, rocky mountain slopes,...
– Inyo Rock Daisy - Perityle megalocephala – Nevada Rock Daisy
- Perityle microglossa – Short-rayed Rock Daisy, manzanilla bronca
- Perityle quinqueflora – Five-flowered Rock Daisy
- Perityle reinana
- Perityle saxicolaPerityle saxicolaPerityle saxicola is a rare species of flowering plant in the aster family known by the common names Roosevelt Dam rockdaisy and Fish Creek rockdaisy. It is endemic to Arizona in the United States, where it occurs in Tonto National Monument near the Roosevelt Dam.This perennial herb or subshrub...
– Roosevelt Dam Rock Daisy - Perityle socorrosensis
- Perityle specuicola – Alcove Rock Daisy
- Perityle villosa – Hanaupah Rock Daisy