Madia gracilis
Madia radiata
common tarweed, grassy tarplant, grassy tarweed, gumweed, slender tarweed
golden madia, showy golden madia, showy madia
proximally pilose to hirsute, distally glandular-pubescent, glands yelloish, purple, or black, lateral branches seldom surpassing main stems.
glandular-pubescent, glands yelloish or purple, lateral branches often surpassing main stems.
blades oblong to linear, 1–10(–15) cm × 1–8(–10) mm.
blades lanceolate to linear, 2–10 cm × 4–15 mm.
depressed-globose to urceolate, 5–10 mm.
depressed-globose, 4–7 mm.
3–10;
corollas lemon yellow or greenish yellow, laminae 1.5–8 mm.
8–16;
corollas golden yellow, laminae 6–19 mm.
2–16+, bisexual, fertile;
corollas 2.5–5 mm, pubescent;
anthers ± dark purple.
18–65, bisexual, fertile;
corollas 3.5–5.5 mm, pubescent;
anthers yellow to brownish.
sometimes hirsute, always finely or coarsely glandular-pubescent, glands yellowish, purple, or black, apices erect or ± reflexed, flat.
pilose to hispid (hairs uncinate) and glandular-pubescent, glands yellowish or purple, apices ± erect or reflexed, flat.
in ± open, paniculiform or racemiform arrays.
in open, ± corymbiform arrays.
similar.
similar, not beaked.
black, purple, or mottled, dull, compressed, beakless (or nearly so).
black, purple, or mottled, dull or glossy, compressed (strongly arcuate), beaked (beaks adaxially offset, curved).
mostly persistent, connate 1/2+ their lengths.
readily falling, distinct.
= 32, 48.
= 16.
Madia gracilis
Madia radiata
Madia gracilis occurs widely in California (except the warm deserts), is scattered across much of Nevada, Oregon, and Washington (outside the driest regions), and extends into southernmost British Columbia, north-western Montana, and northern Utah. Near the coast, M. gracilis sometimes co-occurs with M. sativa; the two species are partially interfertile (M. gracilis tends to flower earlier than M. sativa; J. Clausen 1951). Reported occurrences of M. gracilis in Maine and South America have not been confirmed.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Madia radiata occurs in the Inner South Coast Ranges and, locally, in the eastern San Francisco Bay area. It sometimes co-occurs with Deinandra halliana; the two species are morphologically similar.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
- Local floras:
BC, 
CA, 
OR, 
WA - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
PNW Herbaria, Turner Photog. 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
