Jepson Flora Project: Jepson Interchange    

 
link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

    THIS PAGE IS NO LONGER UPDATED
    AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

ZYGOPHYLLACEAE

CALTROP FAMILY

Duncan M. Porter

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]

FAGONIA

Perennial, shrub
Stem < 1 m, spreading, angled or ridged
Leaf palmately compound; stipules stiff, spine-tipped; leaflets 3, spine-tipped, terminal largest
Inflorescence: flowers solitary in axils
Flower: sepals deciduous; petals clawed, twisted, propeller-like, purple to pink, deciduous
Fruit: capsule, deeply 5-lobed, obovoid, ± septicidal; style persistent; peduncle reflexed
Seed 1 per chamber
Species in genus: ± 18 species: sw North America, Chile, Medit, sw Africa
Etymology: (G.C. Fagon, French physician to Louis XIV, 1638–1718)

Native

F. laevis Standl.

Shrub < 1 m, intricately branched
Leaf: leaflets 3–9 mm, generally < petiole, 1–4 mm wide
Flower ± 1 cm wide
Fruit 4–5 mm wide, minutely strigose or hairy, generally with some glands, rarely glabrous; style 1 mm, wider at base
Ecology: Rocky hillsides to sandy washes
Elevation: 0–700 m.
Bioregional distribution: Desert
Distribution outside California: to sw Utah, nw Mexico
Flowering time: Mar–May, Nov–Jan
Synonyms: F. californica Benth. subsp. l. (Standley) Wiggins
Plants with minute, glandular hairs on fruits have been called F. longipes Standley
Horticultural information: TRY.

previous taxon | next taxon
bioregional map for FAGONIA%20laevis being generated
 


Retrieve Jepson Interchange Index to Plant Names entry for Fagonia laevis
Retrieve dichotomous key for Fagonia
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page
Glossary


University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California