22 



Pterolobium membranulaceum (Blanco) Mimosa inembrcniulacea \i\a.nco, 



Fl. Filip. ed. 1. 739. 1837; Reichardia pentapetala Blanco, 1. c, ed. 



2, 233. 1845; ed. 3, 2:71. Pterolohium indicum F.-Vill. Nov. App. 



70. 1880; Vidal, Sinopsis, Atlas, t. .'f2. f. G. 1883; Rev. PI. Vase. 



Filip. 114. 1886; Merrill, Govt. Lab. Publ. 27:41. 1905, non A. 



Rich. 

 A scandent shrub -with evenly bipinnate leaves 7 to 18 cm. long, with 6 

 to 10 jugate pinnae, 6 to 8 jugate leaflets, and 20 to 60 flowered racemes 

 arranged in terminal and axillary, lax panicles, the winged fruits 5 cm. 

 long. Branches dark reddish brown or grayish, glabrous, or more or less 

 pubescent when young. Leaves alternate, the common rhachis densely 

 ferruginous pubescent, becoming nearly glabrous, with a pair of retrorse 

 spines at the attachment of each pair of pinnae; pinnae 4 to 5 cm. long, 

 opposite, curved, spreading or reflexed, the rhachis pubescent; leaflets 6 

 to 8 pairs, sessile, about 1 cm. long, 5 to 6 mm. Avide, oblong, or the terminal 

 pair obovate-cuneate, glabrous and shining on both surfaces, the base 

 strongly inequilateral, the apex rounded or obtuse, often slightly retuse, the 

 margins irregularly obscurely crenate. Panicles rather strongly ferruginous 

 pubescent, slender, 15 to 20 cm. long, the branches few, 6 to 14 cm. long, the 

 flowers scattered, the pedicels slightly pubescent, slender, 3 to 4 mm. long; 

 bracteoles narrowly lanceolate, long acuminate, d'eciduous, 2.5 to 3 mm. long. 

 Flowers about 4 mm. long. Calj-x glabrous, the lobes oblong, acute, 3 to 



4 mm. long. Petals similar to the calyx lobes and about as long. Stamens 

 10; filaments densely woolly at the base. Ovary glabrous. Pod glabrous, 



5 cm. long including the wing, the seed-bearing portion ovate-rhomboidal, 

 1.5 cm. long, 1 cm. wide, the membranous wing 4 cm. long, 1.3 cm. w^ide. 



Specimens examined, all from Rizal Province, Luzon: San Mateo (1837 

 Ahern's collector), September, 1904 (flower); Bosoboso (1984 Ahern's 

 collector), November, 1904 (fruit). 



A species apparently related to Pterolobium indicum A. Rich., with 

 which it has previously been identified, but quite distinct from it in its 

 inflorescence, fewer leaflets and shorter pods. The specimens on which 

 Blanco based his species were from Tagudin and Agoo, Province of Ilocos 

 Sur, Luzon, and although he apparently erroneously describes it as having 

 but five stamens, yet manifestly his description applies to the species as 

 liere redescribed. The reduction of Mimosa memiranulacea Blanco to 

 Pterolobimn indicum A. Rich., was previously accepted by the author on 

 the assumption that Vidal's identiflcation of his Luzon material as Pterclto- 

 bium indicum was correct. Dr. D. Prain, to whom specimens were sent, 

 pronounced it a distinct species and accordingly Blanco's name is here 

 adopted. 



Vigna pilosa (Roxb.) Baker in Hook. f. Fl. Brit. Ind. 2:207. 1870; Prain 

 in King, Journ. As. Soc. Beng. 6 6": 53. 1897. Dolichos pilosus 

 Roxb.; Phaseoliis difformis Wall. 

 Caloocan, Province of Rizal. Luzon (3674 Merrill), November. 1903. 



A species not previously recorded from the Philippines, growing in bamboo 



thickets, the specimen identified by Prain. British India to Indo-China and 



the Andaman Islands. 



