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Project Name Data (Last Modified On 7/8/2013)
 

Flora Data (Last Modified On 7/8/2013)
Family OLEACEAE
Contributor W. G. D'AiRCy
Description Trees, shrubs or woody vines, evergreen or deciduous; pubescence of weak, simple hairs and usually of peltate glandular trichomes which in many groups are fused to the surfaces and present a punctate appearance. Leaves simple or pinnately compound, entire, lobed or serrate, pinnately veined, the undersides often punctate; mostly petiolate; exstipulate. Inflorescences in dichasial panicles or cymes, rarely solitary, mostly terminal; peduncles and pedicels bracteate. Flowers mostly perfect, often fragrant, pedicellate; calyx mostly cupular with 4-8 often somewhat unequal teeth; corolla mostly white or yellow but sometimes reddish, basally united into a tube, the limb obsolete, the 4-9 lobes usually form- ing more than half the corolla length, imbricate or valvate in bud; stamens 2(4), the filaments slender, inserted on the corolla tube, opposite one another and alter- nate with the corolla lobes, the anthers mostly oblong, the connective broad, apiculate, dehiscence longitudinal; style simple, apically divided into 2, mostly flat, deltoid to fusiform lobes, the lobes ventrally stigmatic, the ovary 2(-4)- carpellate and loculed with 1-2(-19) ovules in each locule, the ovules ascending or pendulous, anatropous or amphitropous. Fruits samaras, capsules or drupes, 1-4-seeded; seeds with a hard endocarp, albuminous or not. Chromosome num- bers mostly x = 23 but differing in some genera.
Habit Trees, shrubs or woody vines
Distribution This family includes some 400 species in 20-30 genera best developed in Asia. Of the 4 genera reported in Panama, only Chionanthus has species native to the New World and Panama.
Note The Oleaceae includes the important crop plant Olea europaea L. (olive, aceituno), and the important lumber trees Fraxinus (ash, fresnos). Many species are cultivated as ornamentals.
Reference Johnson, L. A. S. 1957. A review of the family Oleaceae. Contr. New South Wales Natl. Herb. 2: 395-418. Knoblauch, E. 1892. Oleaceae. In A. Engler & K. Prantl (editors), Die natur- lichen Pflanzenfamilien. IV. 2: Wilhelm Engelmann, Leipzig. Taylor, H. 1945. Cyto-taxonomy and phylogeny of the Oleaceae. Brittonia 5: 337-367. Wilson, K. A. & C. E. Wood. 1959. The genera of Oleaceae in the Southeastern United States. J. Arnold Arbor. 40: 369-384.
Key a. Corolla lobes many times longer than the tube and limb; united portion of corolla not exceeding the calyx; native trees ...... 1. Chionanthus aa. Corolla lobes about as long as or shorter than the tube and limb; united portion of corolla much exceeding the calyx; cultivated or escaping trees, shrubs or vines. b. Anthers exserted (Panama) ...... 3. Ligustrum bb. Anthers included. c. Corolla salverform, the tube narrow; cultivated and escaping vines and shrubs ...... 2. Jasminum cc. Corolla urceolate, globose, the tube cupular; cultivated tree ...... 4. Noronhia
 
 
 
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