38 New Species of South American Plants 



Pterandra opulifolia. 



Tomentellate, except the upper leaf -surf aces, which are 

 sparsely pilose with white hairs. Branches very stout, terete. 

 Petioles i cm. long, extremely stout, strongly channeled above, 

 bearing near the base a pair of short, incurved puberulent horns. 

 Blades 15 to 20 cm. long, 10 to 15 cm. broad, oval with lightly 

 ' cordate base and a very short blunt point at the summit, entire, 

 thickish, brown underneath, where the venation is strongly 

 prominent, the secondaries 7 or 8 on each side, spreading and 

 regularly falcate, connecting at the margin and connected by 

 coarse curved tertiaries. Peduncles 3 or 4 cm. long, very 

 stout, the flowers densely umbellate, the pedicels about 13 mm. 

 long, obsoletely bracteolate at the base, stout, thickened up- 

 ward. Calyx 4 mm. broad, 8-glandular, the glands oval, 

 large. Claw of the petal slightly exceeding the calyx, the limb 

 nearly 6 mm. long, concave, the base cordate. Filaments 2.5 

 mm. long, dilated and slightly connate at the base, nearly gla- 

 brous. Anther nearly half as long as the filament, the wing 

 narrow, hyaline. Ovaries nearly as long as the filament, pilose, 

 the styles stout, equaling the ovary in length. 



"Twining or trailing to 20 feet, the petals yellow, changing 

 to orange. Rare in shrubbery along a water-course, Victoria 

 estate, 3500 feet, March 21." (Herbert H. Smith, Colombia, 

 No. 1512.) 



Heteropteris rhombifolius. 



Inflorescence and flowers somewhat strigose or sericeous. 

 Branchlets slender, ascending, terete, striate and tuberculate, 

 the internodes about as long as their leaves. Petioles slender, 

 6 to 10 mm. long, 2-glandular about the middle, the glands 

 black. Blades 2.5 to 4 cm. long, 1.5 to 3 cm. broad, irregularly 

 oval, with rounded base and obtuse or minutely apiculate sum- 

 mit, thin, dark-green, the venation very slightly prominent 

 above, the secondaries about 8 on a side, spreading, crooked, 

 weak. Racemes terminal, subsessile and axillary, the latter 

 about half the length of their leaves, floriferous only near the 

 summit. Pedicels in flower about 6 mm. long, elongating in 

 fruit, slender. Calyx 4 mm. broad, 8-glandular, the glands 

 large, sericeous. Petals 6 mm. long, the claw a third of the 

 length, spreading or slightly recurved, the limb oval, obtuse, 

 denticulate, obscurely auriculate at the truncate base. Sta- 

 mens 10, about as long as the calyx, equal, the filaments dilated 

 downward, sparsely pilose, connate. Pistils exceeding the 

 stamens, the ovary densely white-pilose, the style tapering, 

 the stigma small. 



"A vine to 15 feet, in thicket near San Pedro plantation, 

 100 feet, February 21." (Herbert H. Smith, Colombia, No. 



