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Fimbristylis squarrosa is an Old World temperate to tropical weed, mostly of Asia and Africa.
While Fimbristylis squarrosa has been collected only once in North America from ballast at Camden, New Jersey (C. F. Parker, in 1865), the weedy and often ruderal nature of the species makes it a likely future adventive.
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Description
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Plants annual, cespitose, delicate, to 30(–40) cm, bases soft; rhizomes absent. Leaves polystichous, spreading to ascending, to 1/2 length of culms or longer; sheaths entire or ciliate distally, backs hirtellous; ligule absent; blades linear-filiform, 0.5 mm wide, flat or involute, scabrid ciliate, often abaxially hirtellous. Inflorescences: anthelae simple or compound, mostly open, ascending-branched, mostly longer than broad; scapes filiform, 0.5 mm wide, distally compressed, mostly glabrous; longer involucral bracts leafy, equaling or exceeded by anthela. Spikelets greenish brown or brownish, lanceoloid or narrowly ellipsoid-cylindric, 4–5 mm; fertile scales ovate, acute, glabrous, midrib excurrent as slender, excurved cusp. Flowers: stamens 1; styles 2-fid, slender, base flat, long-fimbriate, hairs recurved over achene summit. Achenes pale brown, lenticular, obovoid, 0.9 mm, smooth or very finely reticulate.
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Description
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Annual, forming small tufts, up to 15 cm. Stem 0.1-0.2 mm diam., triangular or compressed, glabrous. Leaves c. equalling stem; sheaths to 2.5 cm, wide, green, one side prominently nerved, other side scarious, villous, mouth oblique; blades 0.2-0.4 mm wide, slightly involute, abaxial side pubescent, adaxial side glabrous. Inflorescence to 3 cm diam., of 4-20 spikes; the lowest bracts frequently twice as long as inflorescence, 0.1-0.3 mm wide, sparingly pubescent; branches triangular or compressed, smooth. Spikes mostly solitary, pedunculate, 3-6 mm, with 8 to 30 glumes, more or less angular, greenish to greenish brown; rachis castaneous, with narrow hyaline wings; glumes 2-3 mm, lanceolate to ovate, sparingly villous, with prominent, green mid-rib, arista to 1.5 mm, margins widely scarious. Stamens 1; filaments 1-1.5 mm; anthers narrowly oblong, connective tip prominent; style c. 0.5 mm, upper part slightly ciliate, stylopodium fringed with long, retrorse hairs; stigmas 2, c. 0.5 mm long, ciliate. Nut 0.6-0.7 x 0.5 mm, lenticular, smooth, yellowish brown.
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Distribution
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Distribution: Tropical and temperate regions; S. Europe, Asia, Africa and S. America.
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Distribution
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Tropical, subtropical and temperate regions of both hemispheres.
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Elevation Range
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500-1500 m
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Flower/Fruit
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Fl. Per.: October.
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Habitat
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Rice fields and similar moist places; 4000-7000 ft.
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Habitat & Distribution
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Moist sands or silts, low clearings, fields; low to high elevations; introduced; N.J.; West Indies (Cuba); Central America (Honduras); South America; Asia; Africa; Indian Ocean Islands; Pacific Islands.
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Synonym
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F. aestivalis (Retz.) Vahl var. squarrosa (Vahl) T. Koyama in J. Fac. Sc. Univ. Tokyo. Sect. 3, 8: 116. 1961; F. squarrosa Vahl subsp. squarrosa, Koyama in Fl. Taiwan 5: 246. 1979; Scirpus squarrosus Poir. in Lam., Encycl. Meth. Bot. Suppl. 5: 100. 1806 non L.; F. comata Nees, in Wight, Contrib. Bot. Ind.: 102. 1834; Clarke, Ill. Cyper.: Tab. 41. 1909. Haines & Lye, Sedges and rushes E. Afr.: figs. 152-153. 1983.
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Synonym
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Fimbristylis comata Nees; F. hirta (Kunth) Roemer & Schultes; Isolepis hirta Kunth; Pocronostylis squarrosus (Vahl) Bertoloni
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Derivation of specific name
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squarrosa: squarrose
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- Mark Hyde, Bart Wursten and Petra Ballings
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- Hyde, M.A., Wursten, B.T. and Ballings, P. (2002-2014). Fimbristylis squarrosa Vahl Flora of Zimbabwe website. Accessed 28 August 2014 at http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=111220
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- Mark Hyde
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- Bart Wursten
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- Petra Ballings
Comprehensive Description
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Fimbristylis squarrosa Vahl, Enum. 2 : 289. 1805
Isolepis hirta H.B.K. Nov. Gen. & Sp. 1 : 224. 1816. (Aragua, Venezuela.) Fimbristylis hirta R. & S. Syst. Veg. 2: 99. 1817. Pogonostylis squarrosus Bertol. Fl. Ital. 1: 313. 1834. Fimbristylis comata Nees in Wight, Contr. Bot. India 102. 1834.
Annual ; culms striate, 2-A dm. high, pubescent or glabrous ; leaves basal, very narrow,
flat, usually pubescent, shorter than the culms; bracts of the inflorescence shorter than or
equaling the rays ; inflorescence umbellate, with 1-6 unequal, slender rays 2-3 cm. long ;
spikelets oblong, many-flowered, usually solitary on the divaricate rays, the central spikelet
sessile ; scales ovate, brown, strongly mucronate with recurved tips, hispid, especially on the
greenish midrib; achene lenticular, glistening brown when mature, obovate, 0.7 mm. long,
0.5 mm. wide, often with coarse horizontal reticulation ; style somewhat flattened, 0.7 mm.
long, fimbriate at the junction of the 2 short style-branches, the bulbous base fringed by long,
recurved hairs nearly the length of the achene; stamen 1, the anther 0.3 mm. long.
Type locality: South America (?), "e collect. Amer. Loefling ded. Dr. Ortega."
Distribution: Cuba (C. Wright s. n.) ; South America; India.
- библиографски навод
- Henry Knut Svenson. 1957. (POALES); (CYPERACEAE); SCIRPEAE (CONTINUATIO). North American flora. vol 18(9). New York Botanical Garden, New York, NY
Fimbristylis squarrosa
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Fimbristylis squarrosa là loài thực vật có hoa trong họ Cói. Loài này được Vahl mô tả khoa học đầu tiên năm 1805.[1]
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Fimbristylis squarrosa: Brief Summary
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Fimbristylis squarrosa là loài thực vật có hoa trong họ Cói. Loài này được Vahl mô tả khoa học đầu tiên năm 1805.
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畦畔飘拂草
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二名法 Fimbristylis squarrosaVahl, 1805 畦畔飘拂草(学名:Fimbristylis squarrosa),又名大屯山飘拂草为莎草科飘拂草属下的一个种。
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畦畔飘拂草: Brief Summary
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добавил wikipedia 中文维基百科
畦畔飘拂草(学名:Fimbristylis squarrosa),又名大屯山飘拂草为莎草科飘拂草属下的一个种。