1800 Leaflets of Philippine Botany [Vol. V, Art. 93 



reddish soil in a flat at 250 feet altitude. 

 Allied to D. ferruglnea Benth. 



Derris palawanensis Elm. n. gp. 



A lofty tree climber; stem terete or irregularly wadded, 

 1 dm. thick, bendable, twining about the tree trunks, branch- 

 ed all along from above the middle; wood soft, very porous, 

 dingy white or reddish tinged toward the center, without 

 odor or taste; bark thick, grayish brown, smooth, latericius 

 except the epidermis, freely bleeding with a dark purpureus 

 sap; main branches divaricate, freely rebranched, forming 

 dense hanging masses, the green slender twigs glabrous ex- 

 cept the puberulent young tips, in the dry state turning 

 nearly black. Leaves scattering, alternate, horizontally 

 spreading, averaging nearly 2 dm. long, trifoliate; petiole 4 

 to 6 cm. long, slender, thickened at the base, terete, ulti- 

 mately glabrous; petiolule less than 5 mm. in length, sparsely 

 pubescent in the young state; leaflets similarly disposed, deep- 

 ly conduplicate on the upper only slightly deeper green 

 surface, submembranous, the entire margins wavy toward the 

 recurved sharply acute to acuminate apex, base rounded or 

 broadly obtuse for the terminal leaflet, elliptically oblong to 

 oblongish, the larger leaflets 1 dm. long by 4 cm. wide 

 across the middle, curing similarly deep brown on both sides, 

 only the very young ones sparsely strigose on b(jth sides 

 otherwise glabrous; midrib brown, minutely grooved along the 

 upper side; the 5 to 8 lateral nerves much ascending and 

 curved tips of the upper ones faintly united, reticulations ob- 

 scure; inflorescence divaricate or ascending, from the leaf axils 

 mainly, heavy, profuse, 2 to 5 cm. long, solitary or in few 

 clusters with only few paniculate branchlets subtended by decid- 

 uous bracts, the ultimate branchlets very short, all densely fuligin- 

 eus pubescent; stalks greenish, pedicel with calyx yellowish 

 green, flowers nearly odorless, of rather short duration; pedicels 2 

 to 3 mm. long, fulvns hairy, subtended by bracteoles; calyx 

 cylindrically turbinate, subtended at or a trifle below it by 

 a hairy bristle-like bract, 4 mm. long and 2.5 mm. thick, 

 similarly fine hairy on the exterior, veiny; teeth 5, very 

 short and blunt, the upper 2 more or less united; petiole 



