(Last Modified On 9/24/2013)
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(Last Modified On 9/24/2013)
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Species
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Cajanus cajan (L.) Millsp.
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PlaceOfPublication
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Publ. Field Columbian Mus., Bot. Ser. 2: 53. 1900.
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Synonym
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Cytisus cajan L., Sp. P1. 739. 1753. TYPE: India, herb Linnaeus (LINN 912:4, not seen; photo, MO). Cajanus bicolor DC.,'-Cat. Hort. Bot. Monspel. 85. 1813. TYPE: not seen. Cajanus indicus Spreng. Syst. Veg. 3:248. 1826. TYPE: not seen.
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Description
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Shrub or subshrub; stems angular, striate, strigose. Leaves trifoliolate; leaflets oblanceolate lanceolate, 4.3-8.2 cm long, 1.2-3.2 cm wide, the terminal leaflet slightly longer than the lateral leaflets, apically acute, basally cuneate, the margins revolute, velutinous and gland dotted beneath, glabrous above; petiolules 0.4-1.0 cm long, the lateral leaflets subsessile; petioles 0.6-1.2 cm long, angled, puber- ulent; stipules lanceolate, 2.0-5.0 mm long, strigose; stipels linear to subulate, ca. 1.0 mm long. Inflorescence with racemes 4.0-9.0 cm long, 5-6 (-12)-flowered; peduncles 2.0-4.0 cm long, strigose; pedicel 0.6-0.8 mm long, strigulose; bracts subtending the flowers ovate, 0.5-0.7 cm long, 0.3 cm wide, caducous. Flowers with the calyx 0.8-1.0 cm long, not exceeding the corolla, puberulent, the upper lobes of the calyx partly united; corolla yellow striped with maroon or brown, 1.0-1.6 cm long, the standard obovate, 1.3-1.5 cm long, 1.4-1.5 cm wide, auri- culate, the claw ca. 2.0 mm long, the wing oblong, 1.3-1.4 cm long, 0.5-0.7 cm wide, the claw ca. 4.0 mm long, the keel falcate, not auriculate, 1.2-1.5 cm long, 0.5-0.7 cm wide, the claw 0.5 cm long; stamens 1.3-1.4 cm long, vexillary stamen free; style 1.2-1.3 cm long, the stigma capitate. Fruits oblong, 5.5-7.0 cm long, 0.8-1.0 cm wide, green with brown mottling, puberulent, the beak 0.7-1.0 cm long, the compressions between the ovules oblique; seeds 4-5, ovoid, brown with white mottling, 5.0 mm long, 6.0 mm wide, the hilum linear.
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Habit
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Shrub or subshrub
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Note
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Cajanus cajan is cultivated for its edible seeds known locally as Guandu, Guandul or pigeon-pea. It is found in tropical moist forest in Panama or where cultivated.
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Specimen
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BOCAS DEL TORO: 10-15 mi S from mouth of Changuinola River, Lewis et al. 929 (MO). CANAL ZONE: Between Miraflores and Panama, Blum 2077 (MO). Without other locality, Crawford 438 (NY). Barro Colorado Island, Croat 4670 (SCZ), 7238 (DUKE, MO, NY, SCZ, US). Diablo Heights, Gale, Dec. 7, 1962 (SCZ). Corozal, Greenman & Greenman 5194 (MO). CHIRIQUI: 2 km N of Punta de Purical, Burica Peninsula, Busey 761 (MO). COCLE: El Valle de Ant6n, Hammel 1746 (MO); Lewis et al. 2589 (DUKE, MO). Penonom6, Williams 360 (NY). COL6N: Without other locality, Wedel Feb. 23 1940 (MO). DARIEN: Upper Rio Tuquesa, Le Clezio 109 (MO). PANAMA: Isla del Rey, Duke 9504 (DUKE, MO). Sabanas near Chepo, Hunter & Allen 70 (MO). SE slope of Cerro Jefe, Tyson 3551 (SCZ). Santa Clara, Tyson & Blum 1884 (FSU, MO, SCZ). Cerro Azul, Tyson et al. 6045 (FSU, SCZ). Cerro Campana, Wilbur 24371 (DUKE). Pacora, Williams 770 (NY). LOCALITY UNKNOWN: Tabernilla, Cowell 283 (NY). Aspinwall, Hayes 642 (NY).
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