BRITTON AND ROSE—-CEREUS AND ITS ALLIES. 431 
Collected from the fibrous head of a palm (Thrinax sp.) about 8 meters high, near 
Berraco, 8 miles east of Daiquiri, province of Oriente, Cuba, altitude about 90 
meters, by William R. Maxon (no. 4024), April 13, 1907. Specimens of this 
(07.330) have flowered twice in cultivation (April and May, 1909). 
Type no. 535827 U. S. National Herbarium. 
Selenicereus miravallensis (Weber). 
Cereus miravallensis Weber, Bull. Mus. Hist. Nat. 8: 459. 1902. 
Type Locality: Volcano of Miravalles, Costa Rica, Central America 
Disrripution: Known only from the type locality. 
Selinicereus pringlei Rose, sp. nov. 
Stout, high climber, yellowish green, sometimes darker green or purplish, strongly 
ribbed; tip of stem and of leaves pinkish; ribs 6 or 7; areoles 1 to 1.5 mm. apart; 
spines divaricate, at first yellow, in age white, acicular; radial spines 5 or 6; central 
spine 1; bristles often 5, white; flowers white, about 20 em. long; sepals elongated, 
linear, 3 to 4 mm. broad; petals white, shorter than the sepals, long-acuminate; 
wool on flower buds, in axils of bracts, and on ovary brownish. 
Collected by C. G. Pringle near Jalapa, Vera Cruz, Mexico, April 3, 1899 (no. 
7841, type); also obtained in the living state by J. N. Rose of J. A. McDowell in the 
City of Mexico, but said to have come from the State of Vera Cruz, and again by 
Dr. ©. A. Purpus near Consoquitla, Vera Cruz. The last two specimens are now 
growing at Washington. 
Type U. 8. National Herbarium no. 342875. 
Selenicereus pteranthus (Link & Otto). 
Cereus pteranthus Link & Otto, Allg. Gartenz. 2: 209. 1834. 
Cereus nycticalus Link, Ver. Bef. Gartenb. 10: 372. 1854, 
Cereus brevispinulus Salm-Dyck, Hort. Dyck. 339, 1854. 
Tyre LocaLity: In Mexico. 
Distripution: Mexico. 
IntustrATIoN: Ver. Bef. Gartenb. 10: pl. 4. 
A common plant in conservatories. 
Selenicereus spinulosus (DC.). 
Cereus spinulosus DC. Mem. Mus. Paris 17: 117. 1828. 
Typz LocaLity: Mexico. 
DistrisuTion: Eastern Mexico. 
Intustrations: Bliihende Kakteen pl. 53. 
15. WEBEROCEREUS gen. nov. 
Slender climbing cacti with angled stems and branches emitting aerial roots, the 
areoles bearing a tuft of short wool and several weak acicular bristles; flowers pink 
or rose-color, nocturnal, short-funnelform or funnelform-campanulate; ovary tuber- 
cled, areolate, the areoles bearing weak filiform bristles or stiff hairs, the lower part 
of the corolla-tube with a few similar areoles, the upper part with a few foliaceous 
scales; outer perianth segments reflexed-spreading, blunt, linear-oblong, the inner 
lanceolate, acutish or obtuse; stamens about as Jong as the style; stigmas few, linear; 
fruit ‘‘elongated, spinose, yellow’’ (Schumann). 
Type species Cereus tunilla Weber. 
Weberocereus biolleyi (Weber). 
Rhipsalis biolleyi Weber, Bull. Mus. Nat. 8: 467. 1902. 
Cereus biolleyi Weber; Schum. Gesamtb. Kakteen Nachtr. 60. 1903. 
Type LocaLrry: Vicinity of Port Limon, Costa Rica. 
Disrrispution: Costa Rica, Central America. 
