Phytologia70: 378. 1991
sw United States, w Mexico, Central America.
Chloracantha spinosa produces no terminal resting buds and its evergreen stems without periderm look herbaceous, but it behaves more like a subshrub in its perennial stems (alive for up to four growing seasons) with a quickly developed vascular cambium and production of axillary buds with bud scales. All or almost all of the leaves are usually shed by flowering and the colonies become masses of erect, green stems with loosely paniculiform arrays of small, terminal, white-rayed heads. Geographic variation within C. spinosa has been studied in detail by S. D. Sundberg (1991), who provided a treatment of its infraspecific taxonomy and discussions of typification problems.
|Author||Scott D. Sundberg† + and Guy L. Nesom +|
|Etymology||Greek chloros, green, and akantha, thorn +|
|Illustrator||Linny Heagy +|
|Synonym||Aster Spinosi + and Erigeron Spinosi +|
|Taxon name||Chloracantha +|
|Taxon parent||Asteraceae tribe Astereae +|
|Taxon rank||genus +|
|Volume||Volume 20 +|