114 NORTH AMERICAN FLORA [Volume 32 



cuspidate-acuminate at the apex, with an obtuse acumen, rather thick, bright-green above, 

 lustrous, glabrous, paler beneath, usually sparsely hirsute along the costa, elsewhere glabrous or 

 nearly so, the venation prominent, the lateral veins few, arcuate, the secondary veins reticulate, 

 the margin plane; corymbs few- or many-flowered, the flowers cymose-glomerate, sessile or 

 short-pedicellate; bracts brown, inclosing the buds, thin, caducous; hypanthium 2.5-3 mm. long, 

 setose-hirsute and minutely hirtellous or glabrate; calj-x in many of the flowers expanded into 

 a white lamina, this subreniform, rhombic-orbicular, or ovate-rhombic, 1.2-3 cm. long, 1-3.5 

 cm. wide, rounded at the apex, obtuse to subcordate at the base and abruptly decurrent into 

 a petiole 1-1.5 cm. long, glabrous, prominently veined, sometimes shallowly 3-lobed; corolla 

 white, the tube obconic, 3 mm. long, glabrous or sparsely puberulent outside, the lobes ovate- 

 triangular, slightly longer than the tube, obtuse or acutish, the throat densely white- villous; 

 stamens long-exserted, the anthers 1 mm. long; capsule 6-10 mm. long, 2.5-4 mm. wide, 

 compressed, shallowly bisulcate, costate, acute at the base; seed-body 1-1.5 mm. long, brown, 

 produced at each end into a short acute wing. 



Type locality: Vicinity of Santa Marta, Colombia. 

 Distribution: Guerrero to Chiapas and Colombia; Cuba. 

 Illustrations: Vahl, Symb. pi. 30; E. & P. Nat. Pfl. 4 4 :/. 19, F-J. 



35. RAVNIA Oerst. Vidensk. Meddel. 1852: 49. 1852. 



Epiphytic shrubs, glabrous, the branchlets terete. Leaves opposite, short-petiolate, 

 fleshy. Stipules interpetiolar, large, oblong, obtuse. Flowers large, ternate at the ends of 

 the branches, subsessile; hypanthium narrowly turbinate; calyx 5-6-lobate, the lobes unequal, 

 linear; corolla tubular, incurved, the tube slender, glabrous within, the throat ampliate, con- 

 stricted below the limb, this 5-6-lobate, the lobes short, ovate, obtuse, spreading, imbricate. 

 Stamens 5 or 6, inserted in the throat of the corolla; filaments short; anthers linear, subex- 

 serted. Disk pulviniform. Ovary 2-celled; style filiform, with 2 obtuse branches; ovules 

 numerous, ascending, the placentae affixed to the septum. 



Type species, Ravnia triflora Oerst. 



Leaf -blades elliptic or elliptic-oblong, 2.4-4.5 cm. wide; calyx without teeth between 



the lobes. 1. R. triflora. 



Leaf -blades linear-lanceolate, 1.2-2.8 cm. wide; calyx with linear teeth between the 



lobes. 2. R. Pittieri. 



1. Ravnia triflora Oerst. Vidensk. Meddel. 1852: 49. 1852. 



Branchlets fleshy, thickened at the nodes, the internodes shorter than the leaves; stipules 

 about 1.4 cm. long, thick; petioles very stout, 2-3 mm. long; leaf -blades elliptic or elliptic- 

 oblong, 5-10 cm. long, 2.4—4.5 cm. wide, obtuse or acute at the base, long-acuminate at the 

 apex, thick-coriaceous, the costa scarcely prominent, the lateral veins obsolete or obscure, 

 few; hypanthium 3-5 mm. long; calyx-lobes very unequal, acute, green, the longest about 

 equaling the hypanthium; corolla rose-colored, 5-5.5 cm. long, attenuate at the base and 2 mm. 

 thick, ampliate above and 7-10 mm. thick, the lobes about 3 mm. long; anthers 5 mm. long. 



Type locality: Near Cartago and Candelaria, Costa Rica, at an altitude of 1800 to 2400 meters. 

 Distribution: Costa Rica. 



2. Ravnia Pittieri Standley, sp. nov. 



Branches stout, the internodes short; stipules oblong-oblanceolate, 3.5 mm. long, 6-7 mm. 

 wide, acute, green; petioles stout, 2-4 mm. long; leaf-blades linear-lanceolate, 5-15 cm. long, 

 1.2-2.8 cm. wide, obtuse or acute at the base, gradually long-attenuate to the apex, coriaceous, 

 green, the costa plane above, prominent beneath near the base, the lateral veins obsolete; 

 flowers sessile, in clusters of 3; hypanthium 6-7 mm. long; calyx-lobes linear, 5-8 mm. long, 

 obtuse, with one or more linear or subulate teeth between each 2 lobes; corolla about 5.5 cm. 

 long, the tube 2.5 mm. thick at the base, about 12 mm. thick at the middle, constricted below 

 the limb, the lobes oval-ovate, about 5 mm. long. 



Type collected at Santa Clara, Costa Rica, July, 1899, H. Fittier 13461 (herb. N. Y. Bot. Gard.) . 



