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Published In: Transactions of the Linnean Society of London 18: 116. 1838. (Trans. Linn. Soc. London) 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)
Synonym Text: Polygonum mirajabii Chaudhri in Pak. Syst. 3: 28. 1987. syn. nov. (?)
Type: Type: Mussoree, August, Royle (LIV) (vide Stansfield 1953).
Habitat: Grows between 1500-4000 m.
Distribution: Distribution: Pakistan, Kashmir and India (Kumaon).
Comment/Acknowledgements: Differs from P. biaristatum Aitch. & Hemsl. by its ± ascending habit, somewhat larger leaves, ochreae not biaristrate, 2 styles and smaller nuts (1.5-2 mm long). In P. biaristatum the plants are completely prostrate, leaves smaller with much smaller internodes, 3 styles and larger nuts (c. 3 mm). Duthie 11656 (BM) belongs to P. recumbens Royle ex Bab. whereas in E it belongs to P. cognatum Meisn. subsp. cognatum.

The type of Polygonum mirajabii Chaudhri is not traceable in ISL. The figure given in the original publication is quite poor. However, judging from the description and the type locality the taxon seems to be conspecific with P. recumbens in being perennial, having similar type of nuts and 2 stigmas.

Map Location: B-8 Basoli, 4500 ft, Kashmir C. B. Clarke 31542 (BM,K); Zoji pass, R. R. Stewart 7488 (K); Ramnagar to Yasta, Tawi valley Kashmir, T. Thomson s.n. (K); Baltistan, Dras valley, 11-12000 ft, J. F. Duthie 11656 p.p. (BM); C-7 on the Chenab and Ravi, 5 - 7500, on the Pabar tributary of the Sutlej, 8-10000 ft. J. L. Stewart 207 (K).

 

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Prostrate to ascending perennial, with stout, long, much branched ± grooved stem, glabrous or puberulous; internodes short. Leaves 10-15 x 3-5 mm , broadly elliptic, flat, entire, usually acute, sometimes obtuse, nerves ± obscure, or prominent, petiole 2-5 mm long. Ochreae not covering the internodes, hyaline, ovate - lanceolate, 5-7 mm long, acuminate or sometimes lacerate, nerves 2, stout, excurrent, running from base to the apex but not biaristate. Flowers axillary, usually 2, sometimes 3 or 4 in each axil, pedicel short, jointed just below the tip, perianth lobes 5, outer tepals keeled, styles 2, stigmas capitate. Nut trigonous, black or dark brown, shining, broadest below the middle, 1.5 - 2 mm long.
 
 
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