PITTIER: CAESALPINIACEOUS TREEvS of PANAMA 471 



In size the fruit of C. patinense equals and even surpasses that of 

 C. robustum macrochaete, but the form of the wing is quite distinct, 

 its apex being cut in a distinct hne almost parallel to the opposite 

 margin. From the other Brazilian species the difference is greater 

 still, so that there can be no doubt as to these Panamanian forms 

 being specifically distinct. 



Centrolohium ijavizanum and C. 'patinense differ from each other in 

 their leaflets, these more numerous on the average, more elongated, 

 and emarginate at the base in the former, less numerous, shorter and 

 broader, and simply rounded at the base in the latter. The petiolules 

 also are sensibly shorter in the first species, which has comparatively 

 smaller fruits, the wing rounded at the tip like a table knife, and not 

 obliquely truncate as in the latter. The flowers of both species are 

 unknown, the few details included in the description of C. yavizanum 

 having been obtained from remnants collected along with the fruits. 



Centrolohium. patinense is known among the natives of Panama 

 under the name of amarillo de Guayaquil, and is reputed as a cabinet 

 wood on account of its hard, fine-grained wood, beautifully veined in 

 several shades of red. 



Peltogyne purpurea Pittier, sp. nov., ramis teretibus cortice grisea, 

 ramulis gracilibus, violaceis; foliis deciduis, glaberrimis, stipulis semi- 

 ovatis, acuminatis, membranaceis, caducissimis ; foliolis unijugis, breve 

 petiolulatis, falcatis, acuminatis, inaequilateralibus, basi oblique 

 rotundatis, stipellis filiformibus, caducissimis; inflorescentia racemosa, 



pauciflora, floribus ; legumine 1-spermo, pedicellato, 



semiorbiculato, glaberrimo, suturis angustissimis, laevibus, superiore 

 arcuata, apice mucronulata, inferiore recta, longitudinaliter 1-sulcata; 

 semine oblique ovato, depresso, funiculo in arillum anguste cupuli- 

 formem dilatato. 



Arbor magna, duramine durissimo, purpureo, cortice griseo, ramulis 

 foliisque glaberrimis. Stipulae 10 mm. longae, 6 mm. latae, stipellae 

 6-8 mm. longae. Petlolus 1.2-1.7 cm. longus, petioluH 3^ mm. longi, 

 lamina 5.5-6.5 cm. longa, 2.5-3 cm. lata, eleganter reticulato-venosa. 

 Legumen 3 cm. longum, 1.6 cm. latum, pedicello 7 mm. longo. Semen 

 1.9 cm. longum, 1.1 cm. latum, "e legumine aperto ejectum diu tamen 

 ei adhaerens." 



Type in U. S. National Herbarium, no. 716,675. 



Panama : On rocky hills along the Chucunaque River beyond Yaviza, 

 southern Darien, young leaves only, April 22, 1914 {Pittier 6586); 

 Punta Patino, southern Darien, on hills along the seashore, leaves and 

 mature pods {Pittier 6610,) ; also noticed by me in the dry forests around 

 La Palma del Darien, and reported from Coiba Island. 



