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(Last Modified On 10/23/2012)
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(Last Modified On 10/23/2012)
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Genus
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BULBOSTYLIS Kunth
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Note
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There is no doubt that Kunth's use of Bulbostylis, Enum. 2:205, came from the manuscript of Nees. As I have already mentioned in discussing Eleocharis albibracteata in Rhodora 31:179. 1929, Kunth had access to Nees' manuscript. And on p. 81 of Fl. Bras. (21. 1842) Martius definitely says: BULBOSTYLIS Kunth, Enum. 2:205. 1837, sub Isolepis; Nees ex Martius, Fl. Bras. 21:80. 1842; not Bulbostylis Steven (1814) nor DC. (1836).
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Synonym
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Stenophyllus Raf. Neogen. 4. 1825. Oncostylis Martius, Fl. Bras. 21:80. 1842.
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Description
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Pubescent annuals or perennials with slender culms, leafy below, the leaves narrowly linear or filiform with ciliate or pubescent sheaths; spikelets umbellate, capitate or solitary, sometimes appearing lateral on the culm, with 1 or more sub- tending bracts or sterile scales; scales pubescent, spirally imbricated, usually deciduous; style 3-cleft, with an enlarged base (tubercle) sometimes constricted below and usually persistent on the apex of the achene; perianth lacking; achene trigonous, rarely lenticular, with longitudinally elongate cells and frequently with a papillose-roughened surface; stamens 1-3.
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Note
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About 90 species, chiefly in dry sandy places, in tropics of both hemispheres.
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Key
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a. Spikelet 1 1. B. PARADOXA aa. Spikelets few or many. b. Slender annual- --- 2. B. TENUIFOLIA bb. Perennial. c. Achenes elongate; culms thickenedd? 3. B. PAPILLOSA cc. Achenes obovate; culms fiiform -- 4. B. JUNCIFORMIS
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