MULFORD EXPLORATION OF THE AMAZON VALLEY 



333 



broad, deeply ."i-parted, the lobes ovate, acute, slightly concave. 

 Corolla puberuleiit, rotate, 1.5 cm. broad, the lobes ovate. Outer 

 crown adnata to the corolla, short, with a very narrow mem- 

 branaceous free margin. Inner crown of 5 scales which are a 

 little longer than the anthers, obovate, obtuse, plane, membra- 

 nac(>ous. Anthers 2 nun. long, the basal membranaceous ap- 

 pendages conspicuous, the intlexed apical membranes large, very 

 broad. Stigniatic beak nearly 2 mm. long, conic, dark-brown, 

 obscurely 2-lobed. Corpuscles of the pollinia large. Pollinia 

 oblong, more than 1 mm. long, lightly curved. 



Trinidad, 700 feet, M. Cardenas, March 6, 1922 {no. 2, spe- 

 cial). Species peculiar among its Bolivian relatives in having 

 non-cordate leaves. 



Vincetoxicum cuspidatum 



(Fruiting specimen.) Stems twining, stout, sulcate, setose, 

 or tomentose in places. Only the small uppermost leaves seen. 

 Petiole 5 mm. long, stout, reddish, like the principal veins. Blade 

 5 cm. long, 3 cul wide, obovate Avith slightly cordate base and 

 rounded or retuse summit, the midrib extended into a short stout 

 cusp; deep-green, both surfaces tomentose, the venation not 

 Ijrominent, the secondaries about 5 or 6 on each side. Peduncle 

 of the mature follicle to 4 or 5 cm. long, stout, strongly setose- 

 hispid. Follicle 8 cm. long, 3 cm. broad, ovoid, the pericarp thick 

 and coriaceous or ligneous, brown. Prickles stout, straight or 

 slightly curved, pungent, al)out 3 mm. long, laterally flattened. 

 Seeds dark-brown or blackish, 5 to 7 mm. long and nearly or 

 cpiite as broad, obovate, the summit truncate and usually lightly 

 dentate, a longitudinal ridge upon the side. 



Without data as to locality or season. Species very near 

 V. ellipticuni Rusby. 



Roulinia Mannii 



Younger portions and inflorescence gray-pubescent. Stems 

 slender, twining. Petioles to 3 cm. long, slender, the margins 

 involute. Blades to 7 cm. long and 4 cul wide, ovate, with cor- 

 date base, the sinus deep and narrow, the basal lobes rounded, 

 and with abruptly short-acnminate and acute summit, very thin, 

 very minutely papillose on both surfaces, with very short ap- 

 pressed hairs, the slender venation conspicuous, the secondaries 

 7 or 8 on each side, the fine venation scanty. Peduncles longer 

 than their petioles, the flowers racemose at the upper part, the 

 pedicels unequal, the longest nearly 1 cm. long, slender. Calyx 



