214 THE CACTACEAE. 
Pendent from trees and rocks, up to 5 meters long, branched; joints broadly linear to lanceolate 
or linear-oblong, 2 to 4 dm. long, 3 to 6 cm. broad, obtuse, the margin crenate-undulate; flowers 
yellowish white, 15 mm. long; flower-tube 4 mm. long; perianth-segments 10, lanceolate, acute; 
stamens numerous, about half as long as perianth; style slender; stigma-lobes 5; ovary somewhat 
tubercled, bearing several broad scales; fruit ovoid, 1 cm. long, yellowish green; seeds obovate, 
black, bearing depressed tubercles; hilum oblique. 
Type locality: Jamaica. 
Distribution: Mountains of Jamaica. 
This plant has usually passed as a Rhipsalis, but its definite flower-tube and somewhat 
tubercled and scaly ovary exclude it from that genus. This species has long been known in 
Jamaica; it was mentioned by Sloane as a spineless Opuntia and it is also referred to by 
Patrick Browne. 
215 216 
Fics. 215 and 216.—Top of flowering branch and 
longitudinal section of flower of Pseudorhipsalis 
himantoclada. 2. 
Fics. 217 and 218.—Section of flower and flowering 
branch of Pseudorhipsalis alata. Xo0.66. 
217 218 
Cactus dentatus Ruiz (Martius, Fl. Bras. a2: i f 
_ ae » 1. - 4°: 288. 1890) was given as a synonym 0 
Rhipsalis alata by Schumann, but better referred to R. ramulosa (see page 241). 
Cereus alatus crassior Salm-Dyck (Hort. Dyck. 66. 1834) is only a name, which may 
or may not refer to the Jamaican plant. 
Illustration: Torreya 9: 157. f. 2, as Rhipsalis alata. 
hi Plate XXII, figure 5, shows a plant collected by Dr. Britton in Jamaica in 1907, 
which flowered in the New York Botanical Garden, November 8, 1912. Figure 218 shows 
a flowering branch (natural size); figure 217 sh . ‘anth- 
segments, and stamens. § 7 shows half of a flower with tube, peria 
