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Published In: Species Plantarum 2: 1057. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
General/Distribution: Species about 70, in temperate regions of both the hemispheres.


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Trees or shrubs, with brown or black buds. Leaves deciduous, opposite or in whorls of three, imparipinnate. Flowers small, in dense panicles (often decussate) or in fascicles, unisexual or bisexual. Calyx 4-fid or lacking. Corolla 4-lobed or lacking. Stamens 2, usually purple. Ovary 2-locular, with 2 anatropous ovules in each locule. Stigma more or less 2-lobed. Fruit a samara.

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1 Corolla lacking. Inflorescence in axils of preceeding year’s leave (2)
+ Corolla present. Inflorescence terminal or in axils or current year’s leaves Fraxinus raibocarpa
2 (1) Calyx lacking. Samarae in panicles (decussate); rachis 3 cm or more long (3)
+ Calyx persistent. Samarae in dense fascicles; rachis up to 5 mm Long Fraxinus xanthoxyloides
3 (2) Leaflets 4-7 cm long, coarsely serrate (4)
+ Leaflets 10-15 cm long, slightly serrate to crenate or almost entire Fraxinus hookeri
4 (3) Leaflets 7-11
+ Leaflets 3-7 Fraxinus oxycarpa var. oligophylla
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