102 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
NEW CAESALPINIACEAE FROM PANAMA. 
The genus Cassia is represented in Panama by at least 20 species 
of diverse forms. Three of them appear to be new and are described 
here. There occur in the same region 10 species of Chamaccrista, 
one of which is undescribed. In this connection there are included 
also two new combinations in Chamaecrista, for species occurring in 
Panama. 
Cassia falcinella Standley, sp. nov. 
Stems terete or very obscurely 5-angled, striate, copiously cinereous-puberulent 
with tawny hairs; leaves numerous, approximate; stipules lingar, falcate, 10 mm. 
long, 0.75 mm. wide, green, nerved, subulate-tipped, cinereous-puberulent; rachis of 
_ the leaf about 35 mm. long, tipped with a subulate appendage 3 mm. long, the lower 
pair of leaflets borne 20 to 25 mm. above the base; petiolar glands 2, one or rarely 2 
glands borne between each pair of leaflets, 2 to 3 mm. long, slender-cylindric or rarely 
conic, acute, black; leaflets 2 pairs, asymmetrical, oblong-obovate to elliptic-oblong, 
5 to 8 cm. long, 2 to 4 cm. wide, abruptly long-acuminate at the apex, the tip acute, 
14 mm, long or less, obtuse or rounded and unequal at the base, firm in texture, 
subcoriaceous, glabrous, lustrous on the upper surface, concolorous, conspicuously 
veined; inflorescence a dense many-flowered leafy terminal panicle, its branches 
densely cinereous-puberulent with yellow hairs; peduncles rather stout, 7 to 18 mm, 
long; bracts similar to the stipules but shorter and thinner, some of them narrowly 
linear-lanceolate and not falcate; sepals subequal, 4 mm. long, oblong-ovate, obtuse, 
densely pubescent with short appressed curved yellow hairs; petals bright yellow, 
about 13 mm. long, oblong or oblong-oblanceolate, obtuse, clawed, abundantly 
cinereous on the outer surface; anthers glabrous, nearly equal, the 3 lower slightly 
beaked; ovary strongly curved, densely covered with appressed yellowish hairs, 
Type in the U. 8. National Herbarium, no, 715333, collected in the vicinity of San 
Felix, eastern Chiriqui, Panama, altitude 120 meters or less, December, 1911, by 
H. Pittier (no. 5147). 
Closely related to Cassia undulata, but distinguished readily by the narrower stipules 
and bracts and by the broader, abruptly acuminate leaflets. In that species the 
stipules are more than 2 mm, wideand the bracts of the inflorescence oblong-lanceo- 
late to oval, while the leaflets are acute or abruptly acute. 
Cassia caudata Standley, sp. nov. 
Mature stems not seen, the young ones slender, terete, glabrous; rachis of the leaves 
terete, striate, 15 to 19 cm. long, the lower pair of leaflets borne 9 to 12 cm. above the 
base; stipules not seen; petiolar gland one, 2.5 mm. long, obtusely conic, borne between 
the lower pair of leaflets; petiolules stout, about 5 mm. long; leaflets 2 pairs, elliptic- 
oblong to ovate, 13 to 21 cm. long, 7 to 9 cm. wide, obtuse or rounded at the base 
and slightly unequal, acutish at the apex and abruptly contracted into an acute 
caudate tip 15 to 30 mm. long, thin, glabrous, bright green on the upper surface but 
not lustrous, decidedly paler beneath; leaflets of the lower pair shorter and broader than 
those of the upper; inflorescence of axillary several-flowered racemes or panicles about 
7 cm. long, the branches appressed-puberulent with yellowish hairs; bracts linear- 
subulate, 3 mm. long; pedicels ascending, 15 to 20 mm. long; calyx lobes unequal, 
4to 7 mm. long, obtuse, sparingly puberulent, green; petals bright yellow with dark 
veins, about 20 mm. long, 12 mm. wide or less, rounded at the apex, conspicuously 
clawed; anthers glabrous, slightly unequal, the 3 lower with short cylindric beaks; 
ovary terete, densely appressed-pubescent. 
