| 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 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.
Species in genus: 1 sp
Etymology: (Latin: awned box, from involucre)
Reference: [Reveal & Hardham 1989 Phytologia 66:83–88]
| Native |
Annual, spreading, 2–10 cm, glandular
Leaves basal; stipule 0; petiole 0; blade 3–15 mm, oblanceolate, glabrous
Inflorescence open, 3–10 cm diam; bract 1 per node, 1–4 mm, 3-lobed, awns 0.2–2 mm; involucre 1 per node, ± sessile, 3–5 mm, narrowly funnel-shaped, teeth 5, awns 1–3 mm, straight, spreading; flowers 4–6 per involucre
Flower: perianth 1.5–2 mm, white to pink or rose, sparsely hairy, lobes 6; stamens 9
Fruit 1.5–1.8 mm, brown
Chromosomes: n=14
Ecology: UNCOMMON. Foothill woodland
Elevation: 300–600 m.
Bioregional distribution: Inner South Coast Ranges (Monterey, San Luis Obispo cos.)
Synonyms: Chorizanthe i. Curran; Centrostegia i. (Curran) A. Heller