Symphyotrichum sect. Conyzopsis

(Torrey & A. Gray) G. L. Nesom

Phytologia 77: 271. 1975.

Basionym: Conyzopsis Torrey & A. Gray Fl. N. Amer. 2: 162. 1841
Synonyms: Aster subg. Conyzopsis Undefined sect. Brachyactis Ledebour
Treatment appears in FNA Volume 20. Treatment on page 499. Mentioned on page 465, 466, 467, 498.

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.

not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Torrey & A. Gray) G. L. Nesom +
spatulate;oblanceolate elliptic or ovate +
auriculate +, attenuate +, cuneate +, rounded +, subcordate +  and cordate +
indurate +
Conyzopsis +
1-nerved +, subsessile +, sessile +  and petiolate +
widely ovate;linear +
rugulose +  and muricate +
barbellulate +  and barbellate +
sessile +  and petiolate +
not 2-lipped +  and actinomorphic +
purplish +  and reddish or pinkish +
at maturity , more or less ampliate , tubes usually shorter +
beaked +, 2-ribbed +  and 5-ribbed +
strigillose +  and glabrous +
compressed +, cylindric +  and obovoid or oblong +
fertile +  and bisexual +
fertile +  and bisexual +
North America +, nw Mexico +  and Eurasia +
strigillose +, glabrous +, stipitate-glandular +  and hairy +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
disciform +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
campanulate;hemispheric +
1.8 cm18 mm <br />0.018 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
4.5mm;5mm +
2 (?) +  and 5 (?) +
0.1mm;0.2mm +
sessile +  and petiolate +
cauline +  and basal +
decurrent +
lanceolate +, triangular +  and deltate +
dentate to pinnatifid +  and entire +
not +  and hyaline +
ciliate +  and scabrous +
coarsely serrate +  and crenate or entire +
2-carpellate +
white +  and brownish +
persistent +
25 +  and 40 +
oblanceolate or spatulate +  and linear +
strongly unequal +  and subequal +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
houle1988a +
exalbuminous +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1mm;0.2mm +
ascending +  and erect +
glabrous +, hairy +  and glabrate +
appendaged +  and truncate +
papillate +  and smooth +
Aster subg. Conyzopsis +  and Undefined sect. Brachyactis +
Symphyotrichum sect. Conyzopsis +
Symphyotrichum subg. Symphyotrichum +
section +
funnelform-campanulate +  and cylindric +
at maturity , more or less ampliate , tubes usually shorter +
ampliate +
2 cm20 mm <br />0.02 m <br /> (200 cm2,000 mm <br />2 m <br />) +
tree +, shrub +  and subshrub +
usually diamond-shaped +  and lanceolate +