NEw SPECIES OF SOUTH AMERICAN PLANTS 91 
nate. Corolla about 2 cm. broad, the lobes obovate, the crown 
onspicuous, 2 mm. long. Lobes of isk ovate, obtuse 
slightly exceeding the ovoid ovary. Anther 7 mm. long, nar- 
rowly acuminate and very acute. 
“Twining to 10 or 12 feet. Occasional in damp somewhat 
open places in forest and in clearings near streams, 4,500 to 
6,000 feet, flowering December to May. Collected at Las 
Nubes, 4,500 feet, December 18.” (Herbert H. Smith, No, 
1656.) M 
Prestonia robusta. 
Glabrous except for a minute puberulence on the pedicels. 
Stems rather stout, sulcate when dried. Petioles nearly I. 
cm. long, broad, the blades 8 to 16 cm. long, 6 to 12 cm. broad, 
nearly elliptical, the base slightly produced, very thick, the 
side, almost divaricate, straight and branching at an acute 
angle, the finer, crooked venation more or less parallel with the 
secondaries. Peduncle very stout, more than twice the lengt 
of the petiole, several-flowered, the pedicels very short and 
stout. Calyx about 15 mm. long, very thick and coriaceous, 
the lobes ovate and acuminate. Corolla (but one imperfect 
, abou . broad, nearly straight, 
slightly narrowed upward, slightly thickened at the end, strongly 
striate; apparently immature 
"Tumapasa, 1800 feet, December 15, 1901, the flowers | 
greenish.” (R.S. Williams, Bolivia, No. 571.) 
Prestonia gracilis. 
ubescent throughout, the stems very slender, wur e 
6 to 8 long, very slender, channeled above, the 
loosely reticulate. Cymes corymbose, “ig pes w Usa ex 
ong, icels nearly as : 
8, slender, the very slender ped g as the pedicels, 
lanceolate, attenuate, striate. Calyx 15 mm. long, mre 
the base, the divisions ovate, acumi 
is 
I.5 cm. broad. 
, the limb sra 
Crown annulate, short, thick, the ligules linear, obtuse, thick- 
