familyAsteraceae
genusSymphyotrichum
Show Lower Taxa
Difference between revisions of "Symphyotrichum sect. Conyzopsis"
Phytologia 77: 271. 1975.
Basionym: Conyzopsis Torrey & A. Gray Fl. N. Amer. 2: 162. 1841
Synonyms: Aster subg. Conyzopsis Undefined sect. Brachyactis Ledebour
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|genus=Symphyotrichum | |genus=Symphyotrichum | ||
Latest revision as of 20:58, 5 November 2020
Annuals (sometimes perennials in S. frondosum); taprooted. Stems usually branched. Heads radiate or disciform. Ray (or pistillate) florets more numerous than disc florets, in 2–5+ series (corollas reduced to narrow laminae or to tubes). Disc corollas barely ampliate, lobes erect. Pappi longer than disc florets at flowering. x = 7.
Distribution
North America, nw Mexico, Eurasia.
Discussion
Species 3 (3 in the flora).
A. G. Jones (1989) segregated Brachyactis from Aster in a broad sense. Recent molecular phylogenetic analyses (J. C. Semple et al. 2002) do not support this relationship, species of sect. Conyzopsis clearly belonging in Symphyotrichum.