LEGUMINOS2. | 809 
Sout Mexico, Cordillera of Oaxaca, near the Pacific Ocean, at 4000 to 6000 feet 
(Galeotti, 3175). Hb. Kew. | | | 
The only known ripe pod is in the herbarium of Dr. Ed. Martens, of Louvain, and it — 
was kindly sent to us to be drawn for our Plate. | 
EXPLANATION OF TAB. XVI. Fice. 8-15. 
Fig. 8, portion of plant, nat. size; 9, standard; 10, wing; il , keel, enclosing stamens and pistil ; 
12, stamens and pistil removed from keel; 13, very young pod; 14, anther and free portion 
of filament: all enlarged; 15, pod, natural size. : 
58. VIGNA. 
Vigna, Savi, Mém. Phas. i. p. 7; Benth. et Hook. Gen. Plant. i. p. 539. 
About forty-five herbaceous species, generally dispersed in the tropics. ‘Two or three 
species are almost ubiquitous in tropical countries. In Tropical Africa there are thirty- 
seven species. 
1. Vigna luteola, Benth. in Mart. Fl. Bras. fasc. xxiv. p. 193, t. 50. fig. 2. 
Vigna brachystachys, Benth. 
Vigna villosa, Savi. 
Dolichos mexicanus, Schl. 
Mexico (Botteri, 716; Bilimek, 95; Bourgeau, 3178) ; GUATEMALA (Salvin & God- 
man); Nicaragua (Girsted, 23); Panama (Fendler, 68; S. Hayes, 564).—Common 
throughout TRoPicaL AMERICA and the Tropics of the Oup WortD. Hb. Kew. 
2. Vigna vexillata, Benth. Mart. Fl. Bras. xxiv. p. 193, t. 50. fig. 1. 
Panama, near the city of Panama (Seemann) ; Paraiso railway-station (S. Hayes, 533).— 
Very widely distributed in Tropical SourH AMERICA, and common in Tropical Asia, AFRICA, 
and Australia. Hb. Kew. 
3. Vigna, sp. 
Costa Rica, at Cartago (Grsted). Hb. Kew. 
[Vigna lutea, A. Gray, is a widely dispersed species, likely to occur in Mexico and 
Central America. | 
59. PACHYRHIZUS. 
Pachyrhizus, Rich. in DC. Mém. Lég. p. 379; Benth. et Hook. Gen. Plant. i. p. 540. 
The genus is limited to the two following herbaceous species :-— 
1. Pachyrhizus angulatus, Rich. in DC. Prodr. ii. p. 402; Benth. in Mart. 
Fl. Bras., Papil. t. 53. | 
Taniocarpum articulatum, Desv. 
Robynsia macrophylla, Mart. et Gal. 
Mexico, region of Orizaba (Bourgeau, 1219, 2917), Oaxaca (Andriewr, 432); Nica 
nagua (Crsted, 33); Panama (Fendler, 74, 75; Seemann, 211). Hb. Kew. 
