86 Plants Collected in Paraguay. 



RhyiicIio«)ia Balansae^ Mich., 1. c, 31. 



Asuncion (646); railway track near Caballero (486). January- 

 April. = Balansa, 1513. = Gibert, 1022. 



Rhyncliosia melanosticta, Gris., PL Lorentz, 76. 



Asuncion (724). May. 



Rhynchosia Texana, T. and O., Fl. N. A., i, 687. 



Pilcomayo River (1023). May. 



The Phynchosias here enumerated are small shrubbyish plants, 

 often with declining or prostrate stems, and racemes of yellow 

 flowers. Fruit a small pod with several flattish seeds. Except P. 

 Texa.na, which is twining or creeping, flowers a pale yellow, very 

 small, solitary or 2 or 3 together in axillary clusters. Fruit a flat 

 pod, 1 cm. long, containing a single seed. They all grow in dry 

 soil. 



Pterocarpus Michelii, Britton, n. sp. 



Twigs glabrous. Leaves pale, petioled, 9-12 cm. long, 5-7 foliolate ; leaflets 

 stalked, broadly oblong, oval or slightly ovate, finely reticulated, rather thick, 

 entire, rounded or truncate at the base, obtuse at the apex, 4-7 cm. long, 2-4 

 cm. wide ; raceme dense, 10-15 cm. long, about 3 cm. thick, the rachis, pedi- 

 cels, and calyx densely and finely pubescent with brown hairs ; pedicels 4-5 

 mm. long ; calyx oblique about 6 mm. long ; corolla yellow, about twice as 

 long as the calyx ; legume glabrous, rugose, narrowly winged on one side, 

 3-4 cm. long and nearly as wide, about 1 cm. thick. 



Gran Chaco, opposite Asuncion (3t9). January. 



The same as Balansa's 1497, collected near the same place, and 

 provisionally referred by M. Micheli to P. Rolirii, Yahl. 



A fine large tree from 13 to 20 m. in height, with a branching, wide- 

 spread head, and many shoots rising from the base. Covered at 

 the time of my visit with racemes of bright yellow blossoms, which 

 made it very conspicuous from a distance. 



I visited this tree and others in the vicinity later in the season 

 in the hope of getting fruit, but all of them were barren. The fruit 

 described above is from Balansa's specimen. 



Rergeronia sericea, Mich., 1. c, 39. 



Asuncion (285, 363 and 811). October-December. 

 An unarmed, stragglingly-branched shrub or small tree 3-10 m. 

 in height. Bark gray, smooth or warty. Leaves unequally pin- 



