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FNA | Family List | FNA Vol. 6 | Malvaceae

3. Fremontodendron Coville, Contr. U.S. Natl. Herb. 4: 74. 1893.

[For John Charles Frémont, 1813–1890, U.S. military explorer and politician, and Greek dendron, tree] [For John Charles Frémont, 1813–1890, U.S. military explorer and politician, and Greek dendron, tree]

John L. Strother

Fremontia Torrey, Proc. Amer. Assoc. Advancem. Sci. 4: 191. 1851, not Torrey 1843 [Chenopodiaceae]

Shrubs or trees to 100 dm. Leaves stipulate (stipules caducous); blade usually palmately lobed, base cuneate to rounded or cordate, surfaces hairy, hairs mostly stellate, (1–)3–7-veined from base. Inflorescences flowers solitary, (usually supra-axillary). Flowers: epicalyx caducous; sepals coppery, orange, or yellow, sometimes with red, weakly imbricate or valvate, adaxially glandular or pitted near base, apex often apiculate to attenuate; filament bases connate to 1/2 their lengths; ovary sessile, carpels (4–)5, connate; styles 1; stigmas 1. Capsules 4–5-locular, usually densely hairy abaxially. Seeds 2–3 per locule, often carunculate.

Species 3 (3 in the flora): sw United States, nw Mexico.

SELECTED REFERENCES Kelman, W. M. 1991. A revision of Fremontodendron (Sterculiaceae). Syst. Bot. 16: 3–20. Kelman, W. M. et al. 2006. Genetic relationships among Fremontodendron (Sterculiaceae) populations of the central Sierra Nevada foothills of California. Madroño 53: 380–387.

1 Plants decumbent, to 10+ dm; pedicels 10–27 mm; sepals usually coppery to orange, rarely yellow.   1 Fremontodendron decumbens
+ Plants erect, mostly 15–100 dm; pedicels 4–18 mm; sepals usually orange to yellow   (2)
2 (1) Leaf blade bases cuneate to rounded or weakly cordate; sepals usually yellow, lobes sometimes red at bases and margins, gland/pit borders usually setose; seeds usually carunculate, hairy.   2 Fremontodendron californicum
+ Leaf blade bases notably cordate; sepals usually orange, lobes sometimes reddish at bases and along veins, gland/pit borders rarely setose; seeds rarely carunculate, usually glabrous.   3 Fremontodendron mexicanum

Lower Taxa


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