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Published In: Elem. Physiol. Veg. Bot. 2: 905. 1815. (24-30 Jun 1815) (Elém. Physiol. Vég. Bot.) Name publication detail
 

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
Contributor Text: RUBINA AKHTER
Contributor Institution: National Herbarium, Pakistan Agricultural Research Council, Islamabad.
General/Distribution: A family of 15 genera and c. 200 species distributed in tropical and temperate regions of the northern hemisphere. Represented in Pakistan by 3 genera and 7 species.
Comment/Acknowledgements: Acknowledgements: We are grateful to the U.S. Department of Agriculture for financing this research under PL-480. Thanks are also due to Mr. I.C. Hedge, Royal Botanic Garden, Edinburgh, for going through the manuscript.

 

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Trees or large shrubs, monoecious or polygamous. Leaves simple, alternate. stipulate, usually with oblique bases, petiolate. Flowers small, bisexual or unisexual. solitary, cymose or in axillary fasciculate clusters. Perianth 4-8, campanulate, persistent. Stamens as many as and opposite the perianth lobes or fewer. Ovary superior, unilocular with solitary ovule; styles 2, linear, stigmatose along inner surface. Fruit a drupe or a broadly winged samara.
 

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1 Leaves 3-nerved at the base. Fruit a drupe (2)
+ Leaves not 3-nerved at the base. Fruit a winged samara 1 Ulmus
2 (1) Leaves not scabrid and oblique at the base. Perianth deciduous 3 Celtis
+ Leaves scabrid and rounded at the base. Perianth persistent 2 Trema
 

Lower Taxa
 
 
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