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(Last Modified On 10/1/2013)
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(Last Modified On 10/1/2013)
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Species
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Vigna luteola (Jacq.) Benth.
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Synonym
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Dolichos repens L., Syst. Nat., ed. 10. 1163. 1759. Based on Dolichos maritimus minor, P. Br. Dolichos 5. Maritimus, minor P. Br., Civ. Nat. Hist. Jam. 1756. Phaseolus marinus Burm. in Rumph., Index Alt. Herb. Amboin. 18. 1769. [not seen]. Based on Rumph. Index Alt. Herb. Amboin. 5: 391, tab. 141, fig. 2, 1750. Dolichos luteolus Jacq., Hort. Bot. Vindob. 1: 39, tab. 90. 1770 [1771]. TYPE: Amer. Trop., Jacquin, Herb. Linnaeus (LINN 900.4, not seen; microfiche MO). Dolichos luteus Swartz, Prodr. Veg. Ind. Occ. 105. 1788. TYPE: Jamaica, Swartz, not seen. (fide Marechal et al. 1978; Backer, Fl. Java 1: 642. 1963.) (Vigna glabra Savi, Bull. Sci. Nat. Geol. 6: 62. 1825. Renaming of Dolichos luteolus Jacq.). 293, no. 5. Phaseolus maritimus Hassk., N. Schliss. Rumph., Index Alt. Herb. Amboin. 278. 1864. Vigna repens (L.) Kuntze, Rev. Gen. P1. 212. 1891, non Baker 1876. Phaseolus luteolus (Jacq.) Gegnep, in Lecomte, Fl. Gen. Ind. 2: 229. 1916. Vigna marina (Burm.) Merrill, Interpret. Rumph., Index Alt. Herb. Amboin. 285. 1917.
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Description
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Large scrambling and twining vine; stems tough, glabrous or hirsute, drying sulcate. Leaves pinnate trifoliolate; leaflets ovate, apically acute or obtuse, mu- cronate; basally obtuse, mostly 3-6 cm long, 1-3 cm wide, the costa and proximal portion of the 2 basal lateral veins prominent, other venation inconspicuous, glabrous or somewhat pilose, drying concolorous; petiolules 1-2 mm long, gla- brate; petioles slender, drying angled, glabrate, or somewhat pubescent above, shorter than the terminal leaflet; stipels ovate, ca. 1 mm long, glabrous, not striate. Inflorescences to 20 cm long, peduncle narrowing upwards, glabrate; bracteoles and bracts ovate, ca. 1 mm long, membranaceous and costate, ciliolate to erose; pedicels to 5 mm long, pubescent upwards, condensed at the apex of the peduncle. Flowers yellow; campanulate, the tube 3-6 mm long, glabrous, the teeth ciliate, shorter than the tube, the upper pair united, the others acuminate, the lowermost tooth narrow, slightly longer, glandular; standard 1.5 cm long, emarginate, the keel apically expanded and bent. Legume linear, 4-7 cm long, 5-8 mm wide, turgid, pubescent, maturing black; seeds ovoid, dark, 5-6 mm long, the hilum invaginated, white.
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Habit
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vine
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Note
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This species is distinct in its small ovate leaflets and in its minute, costate bracts and bracteoles, and in Panama in being glabrate overall. Vigna luteola is the name traditionally used for this species, and V. repens is the only other name which has been used for the species in the New World in recent times. However, it is likely that the plant should be correctly called Vigna marina (Burm.) Merrill which is based on Phaseolus marinus Burman. The figure on which this name is-based appears to represent the species discussed here, and as the name was published a year earlier than the Jacquin name employed here, it would appear to be a later synonym of Jacquin's name. Adams, Flr. P1. Jamaica 1972, recognizes only V. luteola, and makes no mention of Dolichos luteus which is based on a Jamaican plant. However, Marechal et al. and others have inter- preted the Burman plate to represent the species treated here as Vigna retusa (E. Mey.) Walp., so until a consensus is formed on this point, we are using the traditional, if incorrect, name V. luteola.
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Specimen
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BOCAS DEL TORO: Santa Catalina, Blackwell 2701 (MO), 2716 (MO). Runway at Bocas, Lazor et al. 2372 (MO, SCZ, FSU). Lower Changuinola River, Stork 137 (US). Chiriqui Lagoon, Wedel 1170 (GH, MO), 1371 (GH, MO, US). Water Valley, Wedel 1740 (GH, MO, US). Old Bank Island, Wedel 1873 (GH, MO, NY, US), 2008 (GH, MO, US). Sheperd Island, Wedel 2718 (GH, MO). Isla Col6n, Wedel 2831 (GH, NY, US). CANAL ZONE: Just E of Gatin locks, Duke 4339 (MO). Toro Point, Fort Sherman, Duke 4340 (MO). Chagres, Fendler 68 (GH, MO). Cristobal, Greenman & Greenman 5214 (MO). Fort Sherman, Standley 31178 (US); Tyson 2254 (MO, FSU, SCZ), 3522 (MO, SCZ, FSU). Gamboa, Tyson et al. 4584 (MO). CHIRIQUT: Boquete, 1200-1500 m, Woodson & Schery 736 (GH, MO, US). COL6N: Rio Piedras, road to Portobelo, Blum et al. 2527 (FSU, MO, SCZ). Miguel de la Borda, Croat 9838 (MO). Maria Chiquita, Croat 11370 (MO); Dwyer & Kirkbride 7813 (GH, MO, US); Ebinger 454 (MO, GH). Mouth of Rio Piedras, Lewis et al. 3168 (MO, DUKE). Col6n, Macbride & Featherstone 7 (F, GH, US). Porvenir, Montgomery 205 (MO). Col6n, Rose 22069 (GH, US). PANAMA: Without other locality, Hayes (GH). Manzanillo Island, Hayes 700 (NY,). San Jose Island, Johnston 757 (MO). SAN BLAS: Nargand, Croat 16852 (MO). Puerto Obaldia, Croat 16871 (MO). Shoreline opposite Ailigandi, D'Arcy & Hammel 12211 (MO). Isla Mosquito, Duke 8855 (MO, US). Soskatupu, Elias 1694 (MO). Isla Pino near Mulatupo, Elias 1712 (MO).
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