13 
Richard does not include H. Brittonae, which appears to be an 
undescribed species. 
Habenaria nivea (Nutt.) Spreng. 
This species, which heretofore has been known only as a native 
of the United States, with a range extending from Florida and 
Louisiana on the south to Delaware on the north, is now known 
to be a native of Cuba. I have examined five plants collected 
in Pinar del Rio Province, submitted for identification by the 
Director of the New York Botanical Garden. I have compared 
and other parts of the United States without being able to find 
edel characters which indicate specific differences. 
There are differences, but they are slight and too m ial in my 
estimation to warrant the recognition of a new specie 
CUBA: PINAR DEL Rio PROVINCE, Laguna Santa Maria, AL 
& E. G. Britton, & С. S. Gager, no. 7126, September 8, 1910. 
Wet sandy pine-lands, Sierra del Cabra, on Guane Road, N. L. 
& E. G. Britton, & C. S. Gager, no. 7272, September 9, 1910, on 
hillside. 
AMES BOTANICAL LABORATORY, 
NoRTH Easton, Mass. 
UNDESCRIBED SPECIES OF CUBAN CACTI 
By N. L. BRITTON AND J. N. ROSE 
Pereskia cubensis sp. nov. 
A tree up to 4 meters high, with a trunk up to 2.5 dm. in 
diameter, and a large, much-branched-top; bark brownish, 
rather smooth, marked by black horizontal bands (representing 
the old areoles) broader than high. Young branches slender, 
smooth, with light brown bark; spines of young areoles 2 or 3, 
needle-like, 2-3 cm. long, of old areoles very numerous (25 or 
more) and much longer (5 cm. or more long); leaves bright green 
on both sides, somewhat fleshy, the midvein broad, distinct, 
the lateral veins very obscure, oblanceolate to oblong-elliptic, 
several at each areole, 1.5-4 cm. long, 10-12 mm. wide, acute at 
both veg. роне small, white (2), solitary; peduncle very short 
(2-3 ong), edd jointed near the base, bearing 1 to 3 
Каке! os fruit see 
Dry thickets at ue meters elevation, province of Oriente. 
