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 |
Perennial to trees, from membranous bulb, fibrous corm, scaly rhizome, or erect caudex
Stem generally underground
Leaves generally basal, often withering early, alternate, generally ± linear
Inflorescence various, generally bracted
Flower generally bisexual, generally radial; perianth often showy, segments generally 6 in two petal-like whorls (outer sometimes sepal-like), free or fused at base; stamens 6 (or 3 + generally 3 ± petal-like staminodes), filaments sometimes attached to perianth or fused into a tube or crown; ovary superior or inferior, chambers 3, placentas generally axile, style generally 1, stigmas generally 3
Fruit: generally capsule, loculicidal or septicidal (berry or nut)
Genera in family: ± 300 genera, 4600 species: especially ± dry temp and subtropical; many cultivated for ornamental or food;some TOXIC . Here includes genera sometimes treated in Agavaceae, Amaryllidaceae, and other families.
Perennial from bulb or rhizome
Stem ± scapose
Leaves many, ± basal (reduced upward), linear, generally folded, ± curved
Inflorescence: raceme or panicle
Flower bisexual, staminate, or sterile; perianth parts 6, petal-like, free or ± fused to ovary base, white to yellowish in CA, glands 1–2 near base; stamens 6, free to ± attached to perianth; ovary chambers 3, styles 3
Fruit: capsule, septicidal
Seeds many
Species in genus: ± 15 species: temp North America, Asia
Etymology: (Greek: yoke-gland, from gland shape of some)
All taxa should be considered highly TOXIC to livestock (generally unpalatable) and humans from alkaloids (especially in bulbs); caused serious illness to some members of Lewis & Clark Expedition .
| Native |
Bulb 25–40 cm diam, ± spheric; outer coats dark brown to black
Stem 30–50 cm, glabrous
Leaf 15–30 cm, 5–10 mm wide, scabrous-ciliate
Inflorescence: generally panicle, 10–35 cm, open; flowers of branches mostly bisexual or staminate; pedicels spreading, 10–35 mm
Flower 5–8 mm; perianth parts ovate to elliptic, ± obtuse, short-clawed, glands greenish, indistinct except ridge at lower edge; stamens ± 2/3 perianth; styles spreading or recurved
Fruit 12–20 mm, oblong
Chromosomes: n=11
Ecology: Sandy desert
Elevation: 600–1800 m.
Bioregional distribution: Tehachapi Mountain Area, Western Transverse Ranges, Mojave Desert
Flowering time: Apr–May
Recent taxonomic note: Toxicoscordion brevibracteatus (M.E. Jones) R.R. GatesHorticultural information: DRN, DRY, SUN: 2, 3, 7, 9, 11, 12, 14, 15, 16.
| 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 10:00:55 2009 |