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: (Greek: winged cover, from involucre)
Reference: [Reveal 1989 Phytologia 66:228235]
Native |
Annual, prostrate or sprawling, (mats < 12 dm diam), thinly hairy, monoecious
Leaves cauline, opposite, petioled; stipule 0; blade 320 mm, generally fan-shaped, entire to deeply notched and appearing 2-lobed
Inflorescence: flowers 12 per node, 1 or both generally staminate; only pistillate flowers involucred; involucre growing with fruit to 13 mm, net-veined, cream to pink or rose, wings 2, outer surface rounded, inner hollowed
Flower: perianth 0.91.2 mm, pale yellow to pink or rose, sparsely hairy, lobes 56; stamens 6
Fruit ± 1.5 mm, brownish
Chromosomes: n=14
Ecology: Common. Shady, often moist places
Elevation: < 1600 m.
Bioregional distribution: California
Distribution outside California: to s Oregon, s Nevada, sw Utah, w Arizona, nw Mexico
Flowering time: MarJul