Flora of North America species comparison

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Madia anomala

plumpseed madia, tarweed
Habit Plants (10–)20–55 cm, self-compatible (heads not showy).
Stems

hirsute, distally glandular-pubescent, glands yellowish, purple, or black, lateral branches rarely surpassing main stems.
Leaf

blades linear, 2–10 cm × 2–7 mm.
Involucres

globose or depressed-globose, 6–10 mm.
Ray florets

3–8;

corollas greenish yellow, laminae 3–4.5 mm.
Disc florets

3–8, bisexual, fertile;

corollas 3.5–4 mm, pubescent;

anthers ± dark purple.
Phyllaries

hirsute and glandular-pubescent, glands yellowish, purple, or black, apices erect or ± reflexed, flat.
Heads

in open, racemiform or paniculiform arrays.
Disc cypselae

similar.
Ray cypselae

black or purple, glossy, ± terete, beakless.
Paleae

mostly persistent, connate 1/4–1/2+ their lengths.
2n

= 32.

Madia anomala
Phenology Flowering Apr–Jun.
Habitat Open, often grassy slopes in woodlands and chaparral
Elevation 0–500 m (0–1600 ft)
Distribution
from FNA
CA
[BONAP county map]
Discussion

Madia anomala occurs locally in the North Coast Ranges, San Francisco Bay area, and Sutter Buttes (southern Sacramento Valley), sometimes with the morphologically similar M. gracilis.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 307.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Madiinae > Madia
Sibling taxa
M. citrigracilis, M. citriodora, M. elegans, M. exigua, M. glomerata, M. gracilis, M. radiata, M. sativa, M. subspicata
Name authority Greene: Bull. Calif. Acad. Sci. 1: 91. (1885)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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