Jepson Interchange (more information)
Print edition is available from the University of California Press
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TREATMENT FROM THE JEPSON MANUAL |
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Jepson Interchange (more information) |
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©Copyright 1993 by the Regents of the University of California
Print edition is available from the University of California Press |
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]
| Native |
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.| YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps). |
| Citation: http://ucjeps.berkeley.edu/interchange/I_treat_indexes.html Fri Nov 27 07:59:36 2009 |