352. JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 13, No. 15 
The species is named for Dr. Carlos Renson, of the Chemical Laboratories 
of the Department of Agriculture of Salvador, who, during many years resi- 
dence in that country, has made important contributions to our knowledge 
of its botanical features. 
Inga calderoni Standl., sp. nov. 
Young branchlets densely pilose with short fulvous hairs; leaf rachis 5.5 to 
9 em. long, narrowly winged, densely short-pilose; leaflets 5 or 6 pairs, nar- 
rowly oblong-lanceolate, 7 to 10.5 em. long, 1.5 to 2.2 em. wide, long-atten- 
uate, obliquely obtuse or rounded at base, copiously fulvous-pilose above 
with subappressed hairs, beneath more densely pilose with mostly spreading 
hairs; legume oval-quadrate, 5 cm. long, 3.5 em. wide, strongly compressed, 
nearly 1 em. thick, covered with a dense feltlike tomentum of stiff fulvous hairs. 
Type in the U.S. National Herbarium, no. 1,152,344, collected at Comas- 
agua, Salvador, December, 1922, by Dr. Salvador Calderén (no. 1392). 
The form of the fruit is quite unlike that of any other species of Inga 
known from Central America. The vernacular name is ‘‘pepeto de mico.”’ 
Cupania mollis Standl., sp. nov. 
Branchlets subterete, finely tomentose, somewhat striate, glabrate in age; 
leaves abruptly pinnate, the rachis and petiole together about 23 em. long, 
finely tomentose; leaflets about 14, oblong or elliptic-oblong, 8 to 13 cm. long, 
3.5 to 5 em. wide, obtuse, rounded or obtuse at base, on petiolules 3 to 8 mm. 
long, serrate with low appressed teeth, entire toward the base, glabrate above, 
beneath paler, densely velvety-pilosulous with short spreading hairs; panicles 
axillary, long-pedunculate, many-flowered, the branches finely tomentose; 
flowers sessile or nearly so; capsule glabrous without and within, subclavate- 
trigonous, narrowed below into a stout stipe 5 to 6 mm. long, the body 
obtusely angulate, 12 to 15 mm. in diameter, rounded and apiculate at apex, 
the partition walls thin. 
Type in the U.S. National Herbarium, no. 1,152,345, collected at Comas- 
agua, Salvador, December, 1922, by Dr. Salvador Calder6én (no. 1400). 
The fruit is similar to that of C. glabra Swartz, but the pubescence of the 
leaves is altogether different. The vernacular name is ‘‘cola de pavo,’’ a 
name applied to various other trees of the family Sapindaceae. 
Karwinskia calderoni Standl., sp. nov. 
Shrub or tree, 2 to 12 m. high, glabrous throughout; petioles 7 to 12 mm. 
long; leaf blades lance-oblong or sometimes oblong-ovate, 3.5 to 10 em. long, 
1.5 to 3.5 em. wide, rounded at base, acute to long-acuminate at apex, green 
above, pale beneath, the lateral nerves 7 to 14 pairs, elevated beneath; 
peduncles sometimes 6 mm. long but usually much shorter, often bifurecate 
above the middle, each branch bearing a few-flowered umbel, the pedicels 
1.5 to 4 mm. long; flowers 3 to 4 mm. broad; fruit subglobose, black and 
lustrous, 6 to 7 mm. long. 
Type in the U. 8. National Herbarium, no. 1,151,851, collected at Acul- 
huaca, one of the suburbs of San Salvador, Salvador, July 14, 1922, by Dr. 
Salvador Calder6n (no. 900). The following additional specimens have been 
examined: 
GUATEMALA: Estanzuela, Dept. Santa Rosa, Heyde & Lux 3954. Ber- 
berena, Dept. Santa Rosa, Heyde & Lux 6088. Without locality, Heyde 192. 
Gualin, Kellerman 5610. 
