Inner perianth-segments pinkish.
Branches usually strongly angled 1. W. tunilla
Branches terete or slightly angled 2. W. biolleyi
Inner perianth-segments white 3. W. anamensis
1. Weberocereus tunilla (Weber) Britton and Rose, Contr. U. S. Nat. Herb. 12: 432. 1909.
Cereus tunilla Weber, Bull. Mus. Hist. Nat. Paris 8: 460. 1902.
Cereus gonzalezii Weber, Bull. Mus. Hist. Nat. Paris 8: 460. 1902.
Stems climbing, 5 to 12 mm. in diameter, usually strongly 4-angled, rarely 2, 3, or 5-angled, but in juvenile forms nearly terete; spines 6 to 12, stiff, swollen at base, yellowish at first, soon brown, 6 to 8 mm. long; flowers 5 to 6 cm. long, pinkish; outer perianth-segments linear, brownish, spreading or reflexed; inner perianth-segments oblong, acute, pink; filaments and style included, pinkish; stigmalobes whitish; ovary strongly tubercled; tubercles bearing several yellow bristles.
Type locality: Near Tablon, southwest of Cartago, Costa Rica. Distribution: Costa Rica.
Illustration: Curtis's Bot. Mag. 144: pl. 8779, as Cereus tunilla.
1. Fruiting branch of Selenicereus pteranthus.
2. Fruiting branch of Selenicereus spinulosus.
3. Fruiting branch of Weberocereus panamensis.
(All natural size.)
Plate xxxix, figure 1, shows a flowering branch of a plant obtained by Wm. R. Maxon in Costa Rica in 1906, which flowered in the New York Botanical Garden in May 1913.
2. Weberocereus biolleyi (Weber) Britton and Rose, Contr. U. S. Nat. Herb. 12: 431. 1909.
Rhipsalis biolleyi Weber, Bull. Mus. Hist. Nat. Paris 8: 467. 1902.
Cereus biolleyi Weber in Schumann, Gesamtb. Kakteen Nachtr. 60. 1903.
Branches long, slender, and flexuous, climbing over or hanging from branches of trees, 4 to 6 mm. in diameter, terete or slightly angled, in juvenile plants often flattened or 3-winged, usually spineless but occasionally bearing 1 to 3 yellow spines from an areole; areoles small, remote; flowers 3 to 5 cm. long; all perianth-segments oblong, obtuse, the inner pinkish; ovary tuberculate, hairy.
Type locality: Vicinity of Port Limon, Costa Rica.
Distribution: Costa Rica.
The branches are often only 4 mm. in diameter and spineless. When cuttings are made from these branches queer juvenile forms develop. In one case a flat, thin, 2-edged branch 10 mm. broad was produced with closely set areoles filled with white, bristle-like hairs; from the same cuttings a similar branch was developed, but 3-angled, like a juvenile Hylocereus.
Plate xxxix, figure 2, is from a plant collected at Zent, Costa Rica, by H. Pittier, which flowered in the New York Botanical Garden, July 18, 1913.
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