Symphyotrichum is a genus of over 100 species and naturally occurring hybrids of herbaceous annual and perennial plants in the composite family, Asteraceae, most which were formerly treated within the genus Aster. The majority are endemic to North America, but several also occur in the West Indies, Central and South America, as well as one species in eastern Eurasia. Several species have been introduced to Europe as garden specimens, most notably New England aster and New York aster.
Image: Symphyotrichum carnerosanum 137208712
Image: H20130729 9066—Symphyotrichum chilense—UCBG (14542414478)
Image: Symphyotrichum adnatum 57674395
Image: Symphyotrichum concolor 56416300
Aster is a genus of perennial flowering plants in the family Asteraceae. Its circumscription has been narrowed, and it now encompasses around 170 species, all but one of which are restricted to Eurasia; many species formerly in Aster are now in other genera of the tribe Astereae. Aster amellus is the type species of the genus and the family Asteraceae.
Aster (genus)
Multi layer petals Aster flower
Aster alpinus is the only species of Aster (sensu stricto) that is native to North America; it is found in mountains across the Northern Hemisphere.