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''Symphyotrichum greatae'' (formerly ''Aster greatae'') is a species of flowering plant in the family Asteraceae endemic to California and known by the common name Greata's aster.
Description
''Symphyotrichum greatae'' is acolonizing
Colonization, or colonisation, constitutes large-scale population movements wherein migrants maintain strong links with their, or their ancestors', former country – by such links, gain advantage over other inhabitants of the territory. When ...
perennial herb
In general use, herbs are a widely distributed and widespread group of plants, excluding vegetables and other plants consumed for macronutrients, with savory or aromatic properties that are used for flavoring and garnishing food, for medicinal ...
growing from a long rhizome
In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hori ...
. It produces upright to erect stems usually tall. The leaves are mostly oval in shape and pointed, the ones at the base up to long. The leaves and parts of the stems are hairy.
The inflorescence is an open array of flower heads amidst leaflike bract
In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of ...
s. The flower head contains many pale violet to nearly white ray florets and a center of yellow disc florets. The fruit is a hairy cypsela.
Distribution and habitat
''Symphyotrichum greatae'' is endemic to theSan Gabriel Mountains
The San Gabriel Mountains ( es, Sierra de San Gabriel) are a mountain range located in northern Los Angeles County, California, Los Angeles County and western San Bernardino County, California, United States. The mountain range is part of the Tr ...
of Southern California, where it grows in damp areas in the canyons of the southern slopes above the Los Angeles Basin.
Conservation
NatureServe lists it as Imperiled (G2) worldwide.Citations
References
* * * *External links
* {{Taxonbar, from1=Q13955513, from2=Q38782427 greatae Endemic flora of California Natural history of the Transverse Ranges ~ ~ Natural history of Los Angeles County, California Plants described in 1902 Taxa named by Samuel Bonsall Parish