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Dysodiopsis
Family:
Asteraceae
Images
not available
FNA
Resources
John L. Strother in Flora of North America (vol. 21)
Annuals or perennials,
40-80+ cm.
Stems
erect, distally branched.
Leaves
cauline; mostly opposite (distal alternate); blades linear, margins coarsely toothed, faces glabrous (bases ± setaceous, oil-glands scattered along midveins).
Heads
radiate, in loose, corymbiform arrays or borne singly.
Calyculi
of 5-8 subulate or pinnatisect bractlets (bearing oil-glands).
Involucres
± campanulate, 5-8 mm diam.
Phyllaries
persistent, 10-12 in 2 series (strongly connate, oblong to linear, margins of outer free to bases, faces of all or outer bearing submarginal and subapical oil-glands).
Receptacles
convex, pitted (socket margins fimbrillate), epaleate.
Ray florets
7-12, pistillate, fertile; corollas lemon to greenish yellow.
Disc florets
20-40+, bisexual, fertile; corollas dull yellow, tubes shorter than cylindro-funnelform throats, lobes 5, deltate.
Cypselae
obpyramidal, glabrous or sparsely strigillose;
pappi
persistent, of 10-12, 1(-3)-aristate scales in ± 2 series.
x
= 13.
Dysodiopsis tagetoides
Images
not available
Map not
Available