Jepson Interchange (more information)
Print edition is available from the University of California Press
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This page is based on the 1993 Jepson Manual.
Please see the Jepson eFlora for up-to-date information about California vascular plants. |
| Jepson Flora Project: Jepson Interchange |
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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 |
| The second edition of The Jepson Manual (2012) is available from the University of California Press | |
| See also the Jepson eFlora, which parallels the Second Edition |
Herb, shrub, often armed; caudex present or not
Stem branched; nodes often angled, swollen
Leaves 1-compound, opposite; stipules persistent or deciduous; leaflets entire
Inflorescence: flowers 1–2 in axils
Flower bisexual; sepals 5, free, persistent or deciduous; petals 5, free, generally spreading, sometimes twisted and appearing propeller-like; stamens 10, sometimes appendaged on inside base; ovary superior, chambers 5–10, ovules 1–several per chamber, placentas axile
Fruit: capsule or splitting into 5–10 nutlets
Genera in family: 26 genera, ± 250 species: widespread especially in warm, dry regions; some cultivated (Guaiacum, lignum vitae; Peganum, harmal (NOXIOUS and illegal); Tribulus, caltrop (pernicious)). Peganum harmala L. has been reported as a pernicious weed near Daggett, San Bernardino Co
Reference: [Porter 1972 J Arnold Arbor 53:531–552]
Shrub, unarmed
Stem branched, erect to prostrate, < 4 m, reddish becoming gray; nodes swollen, darker; hairs 0 or appressed
Leaf: stipules persistent; leaflets 2, fused at base
Inflorescence: flowers solitary in axils
Flower: sepals deciduous, unequal, overlapping; petals clawed, twisted, propeller-like, yellow, deciduous; stamen appendages bract-like, coarsely toothed
Fruit 5-lobed, spheric, short-stalked, hairy, splitting into 5 hairy, 1-seeded nutlets
Species in genus: 5 species: warm, dry Am
Etymology: (J.A. Hernandez de Larrea, Spanish clergyman)
| Native |
Leaf: leaflets < 18 mm, < 8.5 mm wide, obliquely lanceolate to curved; deciduous awn between leaflets < 2 mm
Flower < 2.5 cm wide; sepals ovoid, appressed-hairy; petal claw brownish; stamens > appendages; ovary hairs dense, straight, stiff, silvery (reddish brown in fruit); style 4–6 mm, persistent on young fruit
Fruit 4.5 mm wide
Ecology: Common. Desert scrub
Elevation: < 1000 m.
Bioregional distribution: East of Sierra Nevada, Desert, (uncommon in Tehachapi Mountain Area, San Joaquin Valley, South Coast, San Jacinto Mountains)
Distribution outside California: to sw Utah, Texas, c Mexico
Flowering time: Apr–May
Synonyms: var. arenaria L.D. Benson, Algodones creosote bush; L. divaricata subsp. t. (DC.) Lowe & Felger
Closely related to s South America L. d. Clones may live 10,000 years, longer than any other living plants known; resinous odor characteristic; dominant shrub over vast areas of desertHorticultural information: DRN, SUN: 7, 8, 9, 10, 14, 18, 19, 20, 21, 22, 23 &IRR: 11, 12, 13; also STBL.
| 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). |
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