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Published In: Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 10: 299. 1888. (4 Dec 1888) (Bot. Jahrb. Syst.) 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: Scirpus supinus L., Sp. Pl. 1: 49. 1753. Isolepis supina (L.) R. Br., Prodr. Fl. Nov. Holl. 1: 77. 1810; Schoenoplectus melanospermus (C.A. Mey.) Grossh., Fl. Kavk., ed. 1, 1: 146. 1928. Scirpus melanospermus C.A. Mey. in Mém. Acad. Imp. Sci. St.-Petersbourg, sér. 6, 1: 199. tab.2. 1831; Madalski, Fl. Polon. Terr. Adiac. Iconogr. 3(1): 257. 1979.
Flower/Fruit: Fl. Per.: July - August.
Type: Lectotype: "Habitat Parisiis"; in Herb. Tournefort 5117 (P), selected by Raynal in Adansonia 16: 145. 1976. Reported from Sind by Cooke, l.c. 916. 1908. Report from Pakistan, as well as the specimens seen by the author from Iran, Baluchistan, represent disjunctions and need further study.
Habitat: On wet disturbed ground by standing water, at pools, in rice fields.
Distribution: Distribution: Europe, N. Africa, Turkey, Caucasus, S Siberia, Kazakhstan, Iran, Pakistan to Far East.
Comment/Acknowledgements: The description is based on specimens from S. Russia and the Balkan peninsula. Egorova (1976; Novit. Syst. Pl. Vasc. 28: 5-21. 1991) considers S. supinus and S. melanospermus as distinct species, based on presence/absence of perianth bristles. Raynal (l.c. 1976) united them as one species with wide distribution in Old World.


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Annual, 5-30 cm, forming tufts. Root system fibrous, small. Stem 0.8-2 mm diam., terete or distal parts obscurely trigonous, grooved, green or greyish green, smooth. Sheaths up to 65 mm, 2-3, lowest short, ephemeral, bearing an occasional flower in its axil, upper longer, mouth oblique, margin widely scarious; ligule up to 0.8 mm, scarious; blades reduced to mucro or, in uppermost sheath, most often green, up to 50 mm. Inflorescence 7-20 mm diam., congested to spherical group of (1-)3-15 spikes, sessile or occasionally one or a few spikes pedunculate; lowest bract 2-16 cm, terete, apex rather obtuse, smooth, other bracts seldom green and longer than their spike. Spikes 5-12 mm, ovoid; glumes rather tightly imbricating, 2.1-2.7 mm, cymbiform, towards apex slightly keeled, smooth, mucro c. 0.3 mm, sides obscurely nerved, brown or colourless, scarious, margin smooth or minutely fringed. Perianth bristles reduced, 3-4 occasionally elongated, unequal, longest shorter than nut; stamens 3, anther 0.5-0.7 mm; stigmas 3. Nut 1.3-1.6 x 1-1.3 mm, widely obovoid, apiculate, trigonous, surface conspicuously transversely rugulose with very fine longitudinal striations, glossy, black brown.
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