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!Polygonum L. Search in The Plant ListSearch in IPNISearch in Australian Plant Name IndexSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: Species Plantarum 1: 359. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 10/11/2011)
Acceptance : Accepted
Project data     (Last Modified On 11/30/2011)
Notes:

     Over 20 species, many of them weeds or aquatic plants, mainly in the northern hemisphere; many cosmopolitan.

     The perennial species of this and the next genera feature frequently vegetative propagation.

    Literature: Meissner C.F., Polygonum, in: DC., Prodr. 14: 83-143 (1856).

 At least three additional perennial species grow on Mt. Hermon: P. cognatum Meissner (very rare), P. cedrorum Boiss. & Kotschy, P. libani Boiss. (resembling the former), and the annual P. polycnemoides Jaub. & Spach.

 


 

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Annual or perennial herbs, rarely shrubs. Stems erect to prostrate, sometimes climbing. Leaves alternate, simple; stipules membranous, forming clasping ochreae, often lacerate, fringed or ciliate. Inflorescences spike-like, glomerate or paniculate. Flowers usually small, hermaphrodite, either solitary or in cymose axillary clusters. Bracts partly membranous and united into a sheathing ochreole. Pedicels jointed. Perianth simple, divided into 5 (rarely more or less) subequal segments, usually enclosing fruit. Stamens 8 (rarely fewer), with 2-celled anthers. Ovary superior, 1-ovuled; style 2-3-parted, with capitate stigmas. Achene triquetrous, trigonous or lenticular. Embryo lateral.

 

 

 
 
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