Cassia gigantifolia (Britt. & Killip) Cowan comb. 
nov. 
Chamaefistula gigantifolia Britton & Killip, N. Y. 
Acad. Sci. 35 (1986) 171. 
This collection has been compared with the type (G. 
Klug 1622) at the New York Botanical Garden, and 
there is little doubt of their conspecificity, although the 
petals of the Schu/tes collection are larger; those on the 
type are up to 2 cm. long, and those in the present col- 
lection are up to 8.5 cm. long. 
CotomsBiA: Comisaria del Vaupés, Rio Negro, San Felipe and vicin- 
ity. Richard Evans Schultes, Richard FE. D. Baker & Isidoro Cabrera 17964. 
Inga involucrata Cowan sp. nov. 
Arbuscula, ramulis juvenilibus strigosis sed mox glab- 
rescentibus; stipulae persistentes, subcoriaceae, 15-23 
mm. longae, 10-12 mm. latae, ovatae, acuminatae, glab- 
rae; folia glabra, 3-jugata, petiolo 47 mm. longo, alis 
oblongis, 41 mm. longis, 6 mm. latis, glandula disciformi, 
sessili, 8.5 mm. diametro, rhache 18 cm. longa, alis ob- 
lanceolatis, 75-85 mm. longis, 6 mm. latis; foliola sub- 
coriacea, discolora, elliptica, base obtusa ad subobtusa, 
apice acuta, faciebus ambobus costa salienti sed infra 
validiore, venis primariis 10-15 costae utroque latere, 
supra leviter impressis, infra valde salientibus, venulis 
obscuris, foliolorum jugo inferiore 16.5 cm. longo, 7.5 
cm. lato, jugis superioribus ca. 25-80 cm. longis, 9.5-12 
cm. latis; inflorescentiae axillares, capitatae, pedunculo 
7.5-9 em. longo, sparse strigoso, glabrescenti, floribus 
subsessilibus, viridibus, involucratis (bracteis imbricatis, 
multis, sparse strigosis ad glabris subtendentibus), brac- 
teis exterioribus ovatis, acutis, 7-10 mm. longis, 6.5—-8.5 
mim. latis, bracteis interioribus ellipticis, acutis, ca. 8-10 
mim. longis, 5 mm. latis, pedicellis 1.5 mm. longis, stri- 
gosis; calycorum tubus glaber, ecostatus, subeylindricus, 
[ 146 ] 
