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

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



Dieter H. Wilken

Shrub, tree, or vine, some dioecious
Leaves alternate or opposite, deciduous or evergreen, simple to pinnately compound
Inflorescence various; flower sometimes solitary
Flower sometimes unisexual, generally radial; calyx generally minute, tube cup-shaped, lobes 4–15; petals (0)4–6, generally fused; stamens generally 2, epipetalous; pistil 1, ovary superior, chambers 2, placentas axile, ovules 2–4 per chamber, style 1, stigma generally 2-lobed
Fruit: drupe, capsule, or winged achene
Seed 1 per chamber
Genera in family: ± 25 genera, 900 species: ± worldwide; some cultivated for ornamental (Forsythia ; Jasminum , jasmine; Ligustrum , privet; Syringa , lilac) or food (Olea )
Reference: [Wilson & Wood 1959 J Arnold Arbor 40:369–384]


Perennial to shrub, generally glabrous
Leaves opposite to alternate, simple, generally entire, sessile to short-petioled
Inflorescence appearing after leaves; axillary clusters or terminal panicle
Flower bisexual; calyx lobes 5–15, ± linear, persistent; corolla ± rotate to funnel-shaped, lobes 4–6; ovules 2–4 per chamber, style slender, stigmatic lobes 2, ± spheric
Fruit: capsule, dehiscent by valves, circumscissile, or ± indehiscent, 2-lobed to near base
Seeds 4–8
Species in genus: ± 25 species: Am, s Africa
Etymology: (Greek: perhaps half-moon spear, from appearance of fruit on stiff pedicel)
Reference: [Steyermark 1932 Ann Missouri Bot Gard 19:87–176]


M. spinescens A. Gray

Shrub < 90 cm, sparsely puberulent
Stem intricately branched; branchlets short, stout, becoming spiny
Leaves alternate or clustered, 3–11 mm, oblong to obovate, fleshy
Inflorescence axillary
Flower: calyx lobes 5–7, 3–5 mm, sparsely rough-hairy; corolla tube 4–9 mm; anthers and stigma barely exserted
Fruit indehiscent or breaking apart irregularly; lobes 5–8 mm
Ecology: Rocky slopes, canyons
Elevation: 900–2300 m.
Bioregional distribution: San Bernardino Mountains (n slope), s East of Sierra Nevada, Desert Mountains
Distribution outside California: s Nevada, nw Arizona
Flowering time: Apr–May
Horticultural information: TRY.

previous taxon | next taxon
bioregional map for MENODORA%20spinescens being generated

Retrieve Jepson Interchange Index to Plant Names entry for Menodora spinescens
Retrieve dichotomous key for Menodora
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

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