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Published In: Species Plantarum 2: 986. 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)
Contributor Text: ABDUL GHAFOOR
General/Distribution: A genus of c. 10 species, distributed in E. temperate N. America, S.W. United States of America to Andes, tropical Africa, S.W. Asia eastwards to Japan; introduced in Europe and elsewhere. Represented in Pakistan by 4 species.


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Deciduous, monoecious or dioecious, unarmed laticiferous trees and shrubs. Leaves simple, alternate, dentate, 3-5costate from the base, undivided or 3.5-lobed; stipules lateral, membranous, caducous. Male inflorescence axillary, long-peduncled, cylindrical catkin. Male flowers: sepals 4, busily united, lobes imbricate; stamens 4, inflexed in bud, soon exserted; pistillode present, turbinate. Female inflorescence long or short peduncled, axillary catkins. Female flowers: sepals 4, united at the base, imbricate, persistent and fleshy in fruit; ovary ovoid or subglobose, ovule pendulous, style 2-partite; staminodes absent. Fruit a juicy cylindrical-ovoid sorosis of druplets enclosed by the enlarged succulent calyces. Seeds subglobose, endospermous.

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1 Male and female catckins less than 5 cm long (2)
+ Male and female catkins more than 5 cm long 1 Morus macroura
2 (1) Leaves uniserrate, lobes not caudate (3)
+ Leaves biserrate, lobes long acuminate-caudate 2 Morus serrata
3 (2) leaves pubescent only on the midrib and principal veins of lower surface, secondary and ultimate veinlets glabrous 4 Morus alba
+ Leaves pubescent all over the lower surface including the ultimate veinlets. Styles densely white hairy 3 Morus nigra
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