Jepson Flora Project: Jepson Interchange    

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

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



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.


Species in genus: 1 sp
Etymology: (Mary C. DeDecker, eastern CA botanist, 1909–2000)
Reference: [Reveal & Howell 1976 Brittonia 28:245–251]


D. eurekensis Reveal & J.T. Howell


Shrub, 2–10 dm, 5–20 dm diam, minutely hairy
Leaves cauline; stipule 0; petiole 2–5 mm; blade 7–15 mm, oblanceolate
Inflorescence 1–8 cm; bracts 2–5 per node, free; most nodes with 1 ± sessile flower and 1–several branches; branches and bracts reduced and flowers more per node upward; true involucre 0
Flower: perianth generally 2–4 mm, yellowish, lobes 6; stamens 9
Fruit 2–3.5 mm, light reddish brown, puberulent at tip
Chromosomes: n=14
Ecology: Limestone outcrops
Elevation: 1220–2200 m.
Bioregional distribution: White and Inyo Mountains, Desert Mountains (Last Chance, Panamint mtns).
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for DEDECKERA%20eurekensis being generated
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)

Retrieve Jepson Interchange Index to Plant Names entry for Dedeckera eurekensis
Retrieve dichotomous key for Dedeckera
Overlay Consortium of California Herbaria specimen data by county on this map
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