Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

POLYGONACEAE

BUCKWHEAT FAMILY

James C. Hickman

Annual to trees, some dioecious
Stem: nodes often swollen
Leaves simple, basal or cauline, alternate, opposite, or whorled, generally entire; stipules 0 or obvious and fused into a generally scarious sheath around stem
Inflorescence: small cluster, axillary or arrayed in cymes or panicles; involucres sometimes subtending 1–many flowers
Flower generally bisexual, small, ± radial; perianth generally 5–6-lobed, base ± tapered, often jointed to pedicel; stamens 2–9, often in 2 whorls; ovary superior, styles generally 3, generally fused at base
Fruit: achene, generally enclosed by persistent perianth, generally 3-angled, ovoid, and glabrous
Genera in family: 50 genera, 1100 species: worldwide, especially n temp; some cultivated for food (Fagopyrum ; Rheum , rhubarb; Rumex , sorrel) or ornamental (Antigonon , coral-vine; Muehlenbeckia ; Polygonum )
Reference: [Ronse Decraene & Akeroyd 1988 Bot J Linn Soc 98:321–371; Reveal et al. 1989 Phytologia 66(2–4):83–414]
Treatments of the 15 eriogonoid genera are based on the monographic work of James L. Reveal, who is gratefully acknowledged.

GILMANIA


Species in genus: 1 sp
Etymology: (M. French Gilman, CA botanist, 1871–1944)
Reference: [Reveal 1989 Phytologia 66:236–245]

Native

G. luteola (Coville) Coville

GOLDEN CARPET

Annual, ± prostrate, 3–20 cm diam, thinly hairy
Leaves basal (bracts appear as cauline leaves); stipule 0; petiole < 3 cm; blade 1–1.5 cm, ± obovate, ± glabrous
Inflorescence 5–30 cm diam; bracts clustered at nodes, leaf-like; involucre 0; flowers several–many per bract axil; pedicels 2–7 mm
Flower: perianth 1–2 mm, yellow, thinly hairy, lobes 6; stamens 9
Fruit 1.5–2 mm, brownish
Ecology: Barren alkaline scrub
Elevation: < 500 m.
Bioregional distribution: Mojave Desert (Death Valley, Inyo Co.)
Flowering time: Mar–Apr
See the CNPS Inventory for information about endangerment and rarity.
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