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Published In: Genera Plantarum 400. 1789. (4 Aug 1789) (Gen. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 9/27/2011)
Acceptance : Accepted
Project data     (Last Modified On 9/27/2011)
Notes:

     About 40 genera and 1050 species, mainly in tropical and partly in temperate zones. Three genera occur in the Flora Palaestina, each representing  a different tribe.


 

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Annual or perennial herbs or shrubs, usually pubescent, frequently with stinging hairs. Leaves alternate or opposite, simple, usually stipulate. Flowers unisexual, rarely hermaphrodite (plants monoecious, dioecious or poly- gamous), small, crowded in cymes. Perianth sepaloid, free or united. Staminate flowers with (1-)4-5 stamens opposite the perianth segments, mostly bent inwards in bud and exploding at flowering; anthers 2-celled, opening lengthwise; rudimentary ovary often present. Pistillate flowers often with small staminodes, with a 1-celled, 1-ovuled ovary; style simple or 0. Fruit an achene. Seeds with oily endosperm; embryo usually straight.

 

 

 
 
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