Jepson Flora Project: Jepson Interchange    

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

OLEACEAE

OLIVE FAMILY

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]

FORESTIERA

Shrub, generally dioecious
Leaves simple, opposite or clustered, generally deciduous, short-petioled
Inflorescence: clusters, axillary; staminate flowers subsessile; pistillate flowers pedicelled
Flower: calyx minute, minutely ± 4-lobed, deciduous; corolla 0
Staminate flower: stamens 1–4; pistil vestigial
Pistillate flower: stamens 0; ovules 2 per chamber, stigma 1–2-lobed
Fruit: drupe
Species in genus: ± 20 species: Am
Etymology: (Charles Le Forestier, French physician & naturalist, early 19th century)

Native

F. pubescens Nutt.

DESERT OLIVE

Shrub 5–25 dm
Stem: bark smooth, grayish; twigs short, spine-like, puberulent, becoming glabrous
Leaf: blade 15–40 mm, lanceolate to elliptic, leathery, entire to minutely toothed, glabrous
Inflorescence generally appearing before leaves
Staminate flower: stamens 3–6 mm
Fruit 5–8 mm, elliptic in outline, purple-black, ± glaucous
Chromosomes: 2n=46
Ecology: Streambanks, canyons, washes
Elevation: 100–1800 m.
Bioregional distribution: s Sierra Nevada Foothills, c&s High Sierra Nevada (eastern slope), Tehachapi Mountain Area, eastern San Francisco Bay Area, Outer South Coast Ranges (eastern slope), Inner South Coast Ranges, Transverse Ranges, Peninsular Ranges, s East of Sierra Nevada, Mojave Desert
Distribution outside California: to Colorado, Texas, n Mexico
Flowering time: Mar–Apr
Synonyms: F. neomexicana A. Gray
Horticultural information: 1, 7, 14, 15, 16, 17, 22, 23, 24 IRR: 2, 3, 8, 9, 10, 11, 12, 13, 18, 19, 20, 21.

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