TREATMENT FROM THE JEPSON MANUAL (1993) |
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©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora. |
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY |
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 1many flowers
Flower generally bisexual, small, ± radial; perianth generally 56-lobed, base ± tapered, often jointed to pedicel; stamens 29, 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 98:321371; Reveal et al. 1989 Phytologia 66(24):83414]
Treatments of the 15 eriogonoid genera are based on the monographic work of James L. Reveal, who is gratefully acknowledged.
Species in genus: 1 sp
Etymology: (M. French Gilman, CA botanist, 18711944)
Reference: [Reveal 1989 Phytologia 66:236245]
Native |
Annual, ± prostrate, 320 cm diam, thinly hairy
Leaves basal (bracts appear as cauline leaves); stipule 0; petiole < 3 cm; blade 11.5 cm, ± obovate, ± glabrous
Inflorescence 530 cm diam; bracts clustered at nodes, leaf-like; involucre 0; flowers severalmany per bract axil; pedicels 27 mm
Flower: perianth 12 mm, yellow, thinly hairy, lobes 6; stamens 9
Fruit 1.52 mm, brownish
Ecology: Barren alkaline scrub
Elevation: < 500 m.
Bioregional distribution: Mojave Desert (Death Valley, Inyo Co.)
Flowering time: MarApr