88 Plants Collected in Paraguay. 



Goiirliaea decorticans, Hook., Bot. Misc., iii, 208, pi. cvi. 



Pilcomayo River, near the Falls (1024). May-June. 



Yery different in general appearance from the preceding species. 

 Oar peons called it an "algorroba." A small tree some 6 m. in 

 height, much and stragglingly branched, all the shortest branches 

 armed at the end with a sharp spine. The tree at the time of our 

 visit was a mass of yellow flowers, the flowers not being in terminal 

 racemes as in no. 888, but massed together in clusters of short 

 racemes along the trunk and limbs, each raceme 3 cm. or less in 

 length. One of the most noticeable things about the plant, in which 

 it varies widely from 888, is the bark. The inner bark is green and 

 smooth ; as it grows older it rolls up and peels off in dry scrolls, 

 leaving the young green bark in patches, thus imparting a singular 

 appearance to the trunk. In all the specimens that I saw the 

 flowers were infertile, dropping ofl" and setting no fruit. We were 

 in the vicinity for two months, at least, and I should have found 

 fruit had the trees borne any. 



Peltopliorum dlllJium (Spreng.), Britton. 



Ccesalpinia dubia, Spreng., Sjst. Veg., ii, 343 (1825). 



Peltophorum Vogelianuin, Bentli. in Hook. Jour. Bot., ii, 75 (1840). 



Asuncion (685). April. 



A tree with smooth bark, growing from 6 to 12 m. in height. 

 Young twigs and inflorescence covered with ferruginous down. 

 Leaves 20-30 cm. long, bipinnate ; pinnae oblong, numerous, 4-8 

 cm. long; leaflets 20-40 pairs, oblong, bright green, shining above, 

 oblique at the base, 6-8 mm. long. Flowers in very long, terminal 

 racemes, bright yellow, on pedicels 1-lJ cm. long. Fruit a flat, 

 smooth, and glabrous legume, 6-8 cm. long, pointed at both ends, 

 with 2 sharp edges, containing a few bean-like seeds. This tree is 

 an abundant bloomer, and forms a conspicuous object in the woods 

 about Asuncion when in blossom. 



Caesalpinia melanocarpa, Gris., Symb. Flor. Arg., 114. 



Pilcomayo Kiver (912). February. 



A large tree 16 or 25 m. in height, known among the natives as 

 Guiacdn. The leaves bipinnate, having 3-4 pairs of pinnae and 1 

 odd one ; leaflets about 10 pairs, very small, obtuse. I found it only 

 in fruit, which consists of an oval or obovate, flattish pod 3-4 cm. 

 in length and about 2 cm. in width, with 2-5 small flattish seeds 

 lying crosswise. The tree has a very smooth, green, thin bark, 



