Madia subspicata
Madia citrigracilis
slender tarweed
Shasta tarweed
proximally ± villous, distally glandular-pubescent, glands yellowish, lateral branches not surpassing main stems.
hirsute to villous, distally glandular-pubescent, glands yellowish, purple, or black, lateral branches often surpassing main stems (in large plants).
blades linear to lance-linear, 2–7 cm × 1–5 mm.
blades lanceolate to linear-oblong or linear, 3–15 cm × 2–14 mm.
globose or ovoid, 6–8 mm.
± globose to ovoid or obovoid, 6–8 mm.
5–8;
corollas pale yellow, laminae 1–2.5 mm.
5–8(–14);
corollas pale yellow or greenish yellow, laminae 6–8 mm.
5–15, bisexual, fertile;
corollas 3–3.5 mm, pubescent;
anthers yellow to brownish.
3–10(–30), bisexual, fertile;
corollas 2.5–3.5 mm, pubescent;
anthers ± dark purple.
± hirsute and thick-stalked-glandular as well, glands golden yellow, apices ± erect, sulcate or flat.
hirsute and glandular-pubescent, glands yellowish, purple, or black, apices erect or ± reflexed, flat.
in spiciform or spiciform-racemiform arrays (peduncles 0 or lengths usually less than 2 times heads).
in open, corymbiform arrays.
similar.
similar.
black or brown, sometimes purple-mottled, dull, compressed, ± clavate, beakless.
black or brown, sometimes mottled, dull, compressed, beakless (or nearly so).
mostly persistent, distinct or connate less than 1/2 their lengths.
mostly persistent, mostly connate 1/2+ their lengths.
= 16.
= 48.
Madia subspicata
Madia citrigracilis
Madia subspicata occurs locally in the central and northern Sierra Nevada foothills, sometimes with the morphologically similar M. gracilis.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Madia citrigracilis occurs in northeastern California and northern Nevada. Small or young plants can be exceedingly difficult to distinguish morphologically from M. gracilis, which is one of two putative parental species suggested by J. Clausen et al. (1945) to have been involved in the hybrid (allopolyploid) origin of M. citrigracilis. Molecular data reinforce Clausen et al.’s hypothesis that M. citrigracilis is evolutionarily distinct from M. gracilis.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
