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(Last Modified On 9/26/2013)
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(Last Modified On 9/26/2013)
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Species
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Desmodium triflorum (L.) DC.
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PlaceOfPublication
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Prodr. 2: 334. 1825.
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Synonym
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Hedysarum triflorum L., Sp. PI. 749. 1753. TYPE: Herb. Linnaeus (LINN 921.45). Hedysarum stipulaceum Burm., Fl. Ind. 168. tab. 54, fig. 2. 1768. Aeschynomene triflora (L.) Poir. in Lam., Encycl. Meth. Bot. 4: 451. 1798. ("Aeschinomene") Pleurolobus triflorus (L.) St. Hil., Nouv. Bull. Soc. Philom. 3: 192. 1812. Hedysarum granulatum Schum. & Thonn. in Schumacher, Beskr. Guineiske P1. 362. 1827; Danske Vid. Selsk. Naturv. Afhndl. 3: 136. 1829; Schubert, J. Arnold Arbor. 44: 294. 1963. Desmodium bullamense G. Don, Gen. Syst. 2: 294. 1832. Desmodium triflorum var. 13. minus Wight & Arn., Prodr. 1: 229. 1834. Desmodium triflorum var. y. villosum Wight & Arn., Prodr. 1: 229. 1834. Hippocrepis humilis Blanco, Fl. Filip. 585. 1837. Desmodium caespitosum Bojer, Hort. Maurit. 10. 1837. Desmodium granulatum (Schum. & Thonn.) Walp., Repert. 1: 737. 1842. Desmodium stipulaceum (Burm.) Hassk., Cat. PI. Hort. Bot. Bogor. 274. 1844. Desmodium parvifolium sensu Blanco, Fl. Filip., ed. 2. 408. 1845, non DC. fide E. D. Merrill, Specie Blancoanae 183. 1918. Nicolsonia reptans Meisn. Linnaea 21: 260. 1848. Nicolsonia reptans Hook. f. & Benth. in Hook., Niger Fl. 304. 1849. Sagotia triflora Duchass. & Walp., Linnaea 23: 738. 1850. Nicholsonia triflora Gnseb., Goett. Abhandl. 7: 202. 1857. Meibomia triflora Kuntze, Rev. Gen. P1. 1: 197. 1891. Meibomia triflora var. a. glabrescens Kuntze, Rev. Gen. P1. 1: 197. 1891. Meibomia triflora var. a. glabrescens forma coerulescens Kuntze, Rev. Gen. P1. 1: 197. 1891. Meibomia triflora var. a. glabrescens forma purpurea Kuntze, Rev. Gen. P1. 1: 197. 1891. Meibomia triflora var. a. glabrescens forma violacea Kuntze, Rev. Gen. P1. 1: 197. 1891. Meibomia triflora var. 13. pilosa Kuntze, Rev. Gen. P1. 1: 197. 1891. Meibomia triflora var. 13. pilosa forma violacea Kuntze, Rev. Gen. P1. 1: 197. 1891. Meibomia triflora var. 13. pilosa formaflavescens Kuntze, Rev. Gen. P1. 1: 197. 1891. Meibomia triflora var. 13. pilosa forma virescens Kuntze, Rev. Gen. P1. 1: 197. 1891. Desmodium triflorum var. pigmaeum Hoehne, Comm. Linh. Telegr. Matto Grosso, Ann. 5. Bot. 8: 73. (1917) 1919.
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Description
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Low creeping herbs often with several stems from the base or rooting at the nodes, suggesting a species of Trifolium in habit and aspect; stem terete and striate to angulate, moderately to abundantly long white pilose. Leaves trifolio- late, stipulate, petiolate; stipules stramineous, obliquely ovate, long acuminate, truncate at the base, striate, somewhat pilose on the abaxial surface, ciliate, long persistent, 2-3.5 mm long, 1-1.5 mm wide; petioles sulcate adaxially, long pilose and minutely uncinulate puberulent, 3-7.5 mm long; leaf rachis similar 1-2 mm long; stipels inconspicuous, ca. 0.5 mm long, petiolules stouter than the leaf rachis, densely pilose, 0.5-1 mm long; leaflets obovate, retuse and sometimes nearly truncate at apex, cuneate at base, essentially glabrous adaxially, abun- dantly pilose and minutely uncinulate puberulent on the abaxial surface or pilose, terminal leaflet 5-10 mm long, 5-11 mm wide, the lateral leaflets similar or more nearly elliptic, 4-7.5 mm long, 4-8 mm wide. Inflorescences axillary, densely compressed, usually composed of 3-4 pairs of flowers; primary bracts ovate, short acuminate, striate, ciliate, long persistent, 2.5-3 mm long, 0.7-1.5 mm wide, each subtending 2 pedicels; secondary bracts, when rarely present, depauperate; pedicels densely long pilose or only uncinulate puberulent, 4.5-8 mm long; calyx remotely bilabiate, the teeth of both the lobes equal, each ciliate and with a long pilose, reddish midrib, 2.5-3.5 mm long; corolla with a more or less orbicular but long-unguiculate standard, 3.6-4.5 mm long, 2-3 mm wide above the claw, the wings oblong and long unguiculate, equalling the standard in length, 1 mm wide, the keel petals scythe shaped, long unguiculate, as long as the standard, 1-1.3 mm wide. Loment sessile, to 5-articulate, straight or curved on the upper suture, slightly invaginated on the lower; articles uncinulate pubescent throughout, ul- timately separating at the wide isthmi, 2.5-4 mm long and wide; seed nearly orbicular, 1.5 mm long and almost as wide.
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Habit
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herbs
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Distribution
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widespread in tropical areas.
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Note
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It is often introduced and appears as a weed on lawns, but is noted by some collectors as a good lawn plant. It is said to be eaten by cattle.
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Specimen
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BOCAS DEL TORO: Changuinola Valley, Dunlap 303 (US). Changuinola, Godfrey 67321 (FSU). Almirante, Lazor et al. 2332 (FSU, SCZ). Bocas, Lazor et al. 2355 (FSU, MO, SCZ). CANAL ZONE: Frijoles, Bottimer 1515 (A, DAO). Chagres, Fendler 84 (GH, MO, US). Between Summit and Gam- boa, Greenman & Greenman 5264 (MO). Barro Colorado Island, Hladick 89 (MO). Anc6n, Piper 5184 (US). Rio Grande near Culebra, 50-100 m, Pittier 2077 (US). Barro Colorado Island, Shattuck 195 (MO). Near Gatiun, Standley 27325 (US). CHIRIQUI: Between David and Concepcion 0-100 m, Koster 132 (A). Puerto Armuelles, 20 m, Liesner 142 (MO). COCL: Aguadulce near sea level, Pittier 4856 (US). COL6N: Santa Rita Ridge, 2 mi E of Transisthmian Highway, Lewis et al. 5241 (MO, SCZ). Portobelo, 5-100 m, Pittier s.n. (US); Rose 23998 (US). PANAMA: Madden Dam 75 m, Allen 789 (GH, MO). San Jose Island, Erlanson 589 (GH, US). Sabanas near Chepo, 30 m, Hunter & Allen 22 (GH, MO). Sabanas NE of Panama City, Paul 185 (US). Corozal Road near Panama, Standley 26813 (US). Taboga Island, Standley 27098 (MO, US). Hospital del Seguro Social, Taylor 64 (PMA).
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