Comments
provided by eFloras
This is a distinctive species, easily recognized by the combination of a stoloniferous habit and an inflorescence composed of a pair of widely spreading racemes with small, pale, fringed spikelets.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Perennials, with long stolons; culms compressed, nearly solid; ligule a ring of hairs. Inflorescence
of a pair of racemes, racemes slender, 6-12 cm long, rachis 0.8 mm wide, serrate; pedicels ca. 1 mm
long; spikelets in 2 rows. Spikelets 2-flowered, solitary, ovate, slightly acute, 1.5-1.8 mm long; lower
glume absent; upper glume and lower lemma similar, thin, margins of upper glume delicately fringed
with long silky hairs, hairs as long as spikelet; lower lemma flattened abaxially; upper lemma indurate,
ovate, margins inrolled, as long as spikelet, palea indurate, acute, margins inrolled. Caryopsis ca. 1.2
mm long, plano-convex, embryo 1/3 length of grain.
Originally from America, now widely naturalized in warm regions of the world. Taiwan, very common
in shady places.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Perennial with long stolons. Culms in small tufts along the stolons, compressed, nearly solid, 30–60 cm tall. Leaf sheaths keeled, glabrous or pilose along upper margins and mouth, a line of hairs abaxially at junction with blade; leaf blades lanceolate-linear, thin, 5–20 × 0.5–1 cm, glabrous or papillose-pilose along margins, apex acute. Inflorescence digitate; racemes 2, divaricate, very slender, 6–12 cm; spikelets single, in 2 rows; rachis 0.5–1 mm wide. Spikelets pale yellowish, ovate to suborbicular, 1.5–1.8 mm, abruptly acute; upper glume hyaline, 2-veined with the veins marginal, ciliate along margins with long silky hairs; lower lemma similar but not ciliate; upper lemma pallid at maturity, ovate, as long as spikelet, crustaceous, obscurely striate. Fl. and fr. May–Sep. 2n = 40, 80.
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Habitat & Distribution
provided by eFloras
Open places in forests, forest margins, mostly on moist soils, sometimes forming a sward. Fujian, Guangxi, Hainan, Hong Kong, Taiwan, Yunnan [tropics and subtropics throughout the world].
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Comprehensive Description
provided by North American Flora
Paspalum conjugatum Berg. Acta Helv. 7 : 129. 1772
Paspalum tenue Gaertn. Fruct. 2 : 2. 1791. Paspalum. ciliatum. Lam. Tab. Bncyc. 1 : 175. 1791. Paspalum Renggeri Steud. Syn. Gram. 17. 1854. Paspalum. Sieberianum. Steud. Syn. Gram. 17. 1854. Paspalum longissim,um. Hochst.; Steud. Syn. Gram. 19. 1854.
A glabrous plant with compressed stems which are finally decumbent at the base and rooted at the lower nodes, flat leaf-blades, slender racemes, and ciliate spikelets. Stems 2-9 dm. long; leaf-sheaths compressed, glabrous; blades 4-16 cm. long, 4-12 mm. wide; racemes in pairs, arising from the apex of the stem, slender, often curved, spreading or ascending, 5-12 cm. long, the rachis straight or flexuous toward the apex, 0.6-0.8 mm. wide; spikelets crowded, 1.5 mm. long and 1-1.2 mm. wide, apiculate, the first scale wanting, the second and third scales 2-nerved, the nerves marginal, the second scale ciliate on the margins with long lax hairs, the fruiting scale smooth and white.
Type locality : Surinam.
Distribution : Florida to Mexico, and south to Panama ; Bermuda ; West Indies ; and throughout tropical regions.
- bibliographic citation
- George Valentine Nash. 1912. (POALES); POACEAE (pars). North American flora. vol 17(2). New York Botanical Garden, New York, NY
Physical Description
provided by USDA PLANTS text
Perennials, Terrestrial, not aquatic, Stolons or runners present, Stems trailing, spreading or prostrate, Stems nodes swollen or brittle, Stems erect or ascending, Stems terete, round in cross section, or polygonal, Stem nodes bearded or hairy, Stem internodes solid or spongy, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaf tips flexuous, drooping, blades thin, lax, soft, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath hairy, hispid or prickly, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades lanceolate, Leaf bl ades 2-10 mm wide, Leaf blades 1-2 cm wide, Leaf blades mostly flat, Leaf blades mostly glabrous, Leaf blades scabrous, roughened, or wrinkled, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence a panicle with narrowly racemose or spicate branches, Inflorescence with 2-10 branches, Inflorescence branches 1-sided, Inflorescence branches paired or digitate at a single node, Inflorescence branches paired racemes, V-shaped, Rachis dilated, flat, central axis to which spikelets are attached, Rachis winged, Rachis angular, Flowers bisexual, Spikelets pedicellate, Spikelets sessile or subsessile, Spikelets dorsally compressed or terete, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets with 2 florets, Spikelet with 1 fertile floret and 1-2 sterile florets, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating below the glumes, Spikelets conspicuously hairy , Spikelets secund, in rows on one side of rachis, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 1 clearly present, the other greatly reduced or absent, Glumes distinctly unequal, Glumes equal to or longer than adjacent lemma, Glume equal to or longer than spikelet, Glumes 3 nerved, Lemma similar in texture to glumes, Lemma 3 nerved, Lemma glabrous, Lemma apex acute or acuminate, Lemma awnless, Lemma straight, Palea present, well developed, Palea shorter than lemma, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis white, Caryopsis isodiametric, trigonous or globose, broadest at base or beaked.