Madia sativa
Madia gracilis
Chile tarplant, Chile tarweed, Chilean tarplant, Chilean tarweed, coast tarweed, coastal tarweed
common tarweed, grassy tarplant, grassy tarweed, gumweed, slender tarweed
hirsute and glandular-pubescent, glands yellowish, purple, or black, lateral branches rarely surpassing main stems.
proximally pilose to hirsute, distally glandular-pubescent, glands yelloish, purple, or black, lateral branches seldom surpassing main stems.
blades broadly lanceolate to linear-oblong or linear, 2–18 cm × 3–18(–29) mm.
blades oblong to linear, 1–10(–15) cm × 1–8(–10) mm.
ovoid to urceolate, 6–16 mm.
depressed-globose to urceolate, 5–10 mm.
(5–)8–13;
corollas greenish yellow or sometimes purplish red abaxially or throughout, laminae 1.5–4 mm.
3–10;
corollas lemon yellow or greenish yellow, laminae 1.5–8 mm.
11–14, bisexual, fertile;
corollas 2–5 mm, pubescent;
anthers ± dark purple.
2–16+, bisexual, fertile;
corollas 2.5–5 mm, pubescent;
anthers ± dark purple.
hirsute and glandular-pubescent, glands yellowish, purple, or black, apices erect or ± reflexed, flat.
sometimes hirsute, always finely or coarsely glandular-pubescent, glands yellowish, purple, or black, apices erect or ± reflexed, flat.
in usually crowded, paniculiform, racemiform, or spiciform arrays.
in ± open, paniculiform or racemiform arrays.
similar.
similar.
black or brown, sometimes mottled, dull, compressed, beakless.
black, purple, or mottled, dull, compressed, beakless (or nearly so).
mostly persistent, connate 1/2+ their lengths.
mostly persistent, connate 1/2+ their lengths.
= 32.
= 32, 48.
Madia sativa
Madia gracilis
In North America, Madia sativa occurs on the Pacific Coast from California to British Columbia, sporadically in coastal ranges, and rarely eastward. Reports of M. sativa from Ontario and Quebec and from Alaska, Connecticut, Georgia, Idaho, Indiana, Iowa, Maine, Maryland, Massachusetts, New York, North Carolina, Pennsylvania, Vermont, and Wisconsin are putative waifs or misidentified M. glomerata. Molecular data and greenhouse studies have indicated that plants referable to M. capitata and M. sativa in California are not distinct (B. G. Baldwin, unpubl.). Sampled populations of M. sativa (including M. capitata) from California are somewhat divergent in DNA sequences from sampled Chilean populations, in apparent conflict with earlier suggestions that M. sativa was recently introduced to North America from South America by Europeans (Baldwin, unpubl.). Madia sativa has been cultivated for seed-oil in South America, Europe, Africa, and Asia Minor (E. Zardini 1992).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
- 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
- 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
