Plants Collected in Paraguay. 85 



PliaseolllS erytlirolonin, Mart. ; Benth. in Ann. Mus. Vind., ii, 141. 



Asuncion (198) ; Pilcomayo River (993). November-April. 



Stems stout, soft hairy, running over the ground or twining- 

 about herbs and shrubs. Leaflets of the ternate leaves rhomboidal, 

 velvety downy. Just above each leaf is a conspicuous w^horl of 

 green, downy, subulate bracts, about 1 cm. in length. Flowers on 

 peduncles 30 cm. in length, the lateral petals spreading, very dark 

 reddish-purple, imparting that hue to the corolla; standard green- 

 ish, much smaller than the laterals. Fruit a hairy pod containing 

 18 or 20 lenticular seeds, shining, mottled black and pale yellow, 

 marked with a white hilum scar. I found this at Asuncion in fields 

 and pastures, and in thickets on the Pilcomayo climbing upon shrubs 

 5 m. high. 



Pliaseolus Truxillensis, H. B. K., Nov. Gen., vi, 451. 



Asuncion (127, 695, 778, and 778a). November-June. 



Twining about herbs and shrubs. Flowers 1-2 cm. high, purple 

 and yellow ; standard large, roundish, emarginate ; wnngs obovate 

 and beautifully striped with purple. At the base of each leaflet is 

 a flat, thick gland. Fruit a heavy pod 12 cm. in length and about 

 1 cm. wide, containing from 8 to 15 flattish seeds, undivided by 

 septa. The whole plant is clothed with thick, fuscous hairs. Very 

 variable in size and length of the stems, hairiness, and especially in 

 the size of the leaflets. In some specimens the leaflets are lanceo- 

 late with subhastate lobes at the base, 3-4 cm. long and 15-18 mm. 

 wide, in others they are rhombic-ovate, 12 cm. long and 8 cm. wide. 

 At times the stem and leaves are nearly glabrous. At times the 

 pod is much smaller than the dimensions given above and scantily 

 pubescent. 



Pliaseolus prostratus, Benth., var. angustifolius, Bentli., Mart. Fl. 

 Bras., XV, pt. 1, 192. 



Caballero (414). January. 



Pliaseolus rufus, Mich., Mem. Soc. Geneve, xxviii, No. 7, 29 ? 



Caballero (406). January. 



A small twining plant, often trailing, in fields. The flowers are 

 white or a very pale yellow. Leaflets round or oval, 2 cm. long or 

 less. Not seen in fruit. 



