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Perennial herb to tree [vine], hairs 0 or peltate or not; rarely dioecious. Leaf: simple to odd-pinnately compound, alternate or generally opposite, deciduous or evergreen; stipules 0. Inflorescence: various; flowers >= 1. Flower: generally bisexual, generally radial; calyx generally minute (0), tube cup-shaped, lobes 4–15; petals (0)4–6(8), generally fused; nectar disk often present; stamens (0)2(4–5), epipetalous; pistil 1, ovary superior, chambers 2, each 2–4 ovuled, placenta axile, style 1, stigma generally 2-lobed. Fruit: drupe, capsule, or winged achene. Seed: 1 per chamber.
± 25 genera, 900 species: ± worldwide; some cultivated for ornamental (Forsythia; Jasminum, jasmine; Ligustrum, privet; Syringa, lilac) or food (Olea, olive). [Lee et al. 2007 Molec Biol Evol 24:1161–1180] —Scientific Editor: Bruce G. Baldwin.
Unabridged references: [Jensen et al. 2002 Phytochemisty 60:213–231; Kim & Jansen 1998 Amer J Bot 85(6): Suppl. 139; Wallander & Albert 2000 Amer J Bot 87(12):1827–1841]
Key to Oleaceae
Shrub, erect to mounded; generally dioecious. Leaf: simple, opposite or clustered, generally deciduous, short-petioled. Inflorescence: axillary clusters; staminate flowers ± sessile; pistillate flowers pedicelled. Flower: unisexual [bisexual]; calyx minute, lobes awl-shaped, early-deciduous; corolla 0. Staminate flower: stamens (1)4(6); filaments long, free (in California); anthers white [black]; pistil vestigial if present. Pistillate flower: stamens 0 or 1–4, reduced, sterile (in California); ovules 2 per chamber; style short, slender; stigma head-shaped or 2-lobed. Fruit: drupe.
± 12 species: America. (André Robert Forestier, French physician, teacher, 1736–1812) [Nesom 2009 Lundellia 12:8–14]
Unabridged references: [Brooks 1977 Ph.D. Dissertation, Univ of Alabama, University Station]
Shrub, 12–50 dm, generally rounded. Stem: many, bark smooth, tan-gray; twigs short, ± rigidly thorny, glabrous to puberulent. Leaf: blade 15–40(50) mm, elliptic or lanceolate to ovate, leathery, entire to minutely toothed, glabrous. Inflorescence: generally appearing before leaves. Staminate flower: 1–5 per bud; pedicel ± 0; filaments 3–5 mm, yellow. Pistillate flower: 1–8 per bud; pedicel 2–5 mm, green, some branched; ovary > 1 mm, style ± 1 mm. Fruit: 5–8 mm, elliptic in outline, ± glaucous, purple-black.
2n=46. Streambanks, canyons, washes; 100–1800 m. se Inner North Coast Ranges, s Sierra Nevada Foothills, c&s High Sierra Nevada (eastern slope), Tehachapi Mountain Area, eastern San Francisco Bay Area, South Coast Ranges, Transverse Ranges, Peninsular Ranges, s East of Sierra Nevada, Mojave Desert; to Colorado, Texas, northern Mexico. [Forestiera pubescens var. parviflora (A. Gray) Nesom] California specimens with glabrous stems, leaves, pedicels, except some in eastern San Bernardino Co. Mar–Apr [Online Interchange]
Unabridged synonyms: [Forestiera neomexicana A. Gray var. arizonica A. Gray; Forestiera neomexicana var. neomexicana]
Previous taxon: Forestiera
Next taxon: Fraxinus
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Jul 25 2014
Citation for this treatment: [Author of taxon treatment] 2013. Forestiera, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=25982, accessed on Jul 25 2014
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© 2004 James M. Andre
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