Description Single purple Aster flower. Aster is a genus of perennial flowering plants in the family Asteraceae. Its circumscription has been narrowed, and it now encompasses around 180 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.
William Castner, Boulder Member Since June 2019 Artist Statement Fine art photographer based in Boulder, Colorado. I exhibit in several regional galleries and hang in hospitals, hotels, corporate offices and private collections. I work extensively with art consultants and interior designers nationwide. My photography has been published in magazines, newspapers, textbooks and as posters, calendars and note cards.