606 OBCHIDEiE. 



CXLVII. BUKMANlSriACEiE. 



Ferigone coloured, of 3 exterior and 3(-0) interior divisions. Stamens 3 (-6), inserted 

 into the perigonial tube. Omry inferior, syncarpous or paracarpous, many-ovnlate. • Em- 

 iryo undivided : no albumen. — SmaE herbs ; leaves mimite or narrow. 



1. BURMANNIA, L. 



Ferigone infundibular : interior lobes minute. Ovary 3-celled. Capmle usually 3- 



winged, irregularly dehiscent by transverse slits between the angles. 

 |if 1. B. capitata, Mart. Annual ; stem filiform, simple, subaphyllous : scales distant, 

 I lanceolate-acuminate ; flowers in a small terminal head; perigonial tube Z-costate. — Mich. 



Fl. t. 3.— Tripterella, McA.— 2"-8" high; scales l"'-2"', flowers 2"'-3"' long, the latter 



"whitish." — Hab. Jamaica!, Wullschl.; Trinidad!, Fd., Or., in savannahs; [Carolina! 



to Brazil!]. 



S. APTERIA, iV««. 



Ferigone infundibular: lobes of unequal breadth. Stamens with a broad, obcordate, 

 dorsal appendage. Ovary l-ceUed. Capiule medianicide at the summit. — A filiform, simple, 

 or few-branched annual ; leaves scale-like^ distant, ovate-lanceolate, sheathing ; cyme race- 

 iform, one-sided or few-\-floiBered : flowers bltie. 



2. A. setacea, Nntt. — Hooh. Ic. t. 660. — A. lilacina, Mrs. : a large-flowered form. 

 A. hymenanthera, Miq. — 2"-4" high ; perigone 4"'(-8"') long : lobes subnniseriate, blunt- 

 ish, 3 linear, 3 deltoid. — Had. Jamaica !, Pd., Wils., in high savaunahs, Manchester ; Tri- 

 nidad !, Cr., among mosses, Tocnche, heights of Las Cuevas ; [Alabama 1 to equatorial 

 Brazil I]. 



3. DICTYOSTEGA, Mrs. 



Ferigone urceolate : interior lobes smaller. Stamens devoid of dorsal appendages. Ovary 

 1-celled. Capsule medianicide.— Eoot-fibres with ciliate scales ; stem filiform ; leaves 

 scale-liJee ; flowers in a terminal cyme. 



3. D. orobanchoides, Mrs. Stem erect, simple ; cyme 2-fid ; branches racemiform : 

 pedicels nodding, alternating with the bracts ; ovary turbinate, ecostate ; capsule 3-valved. 

 — Hook. Ic. t. 254. — Apteria, Hook. — 8"-12" high ; scales appressed-sheathing, ovate-ob- 

 long, superior distant ; perigone 1"' long, white, deciduous -. capsule as long. — Hab. Trini- 

 dad !, Cr., at Aripo ; [BrazU]. 



CXLVIII. OECHIDEJ;. 



Perigone coloured, of 3 exterior and 3 interior divisions : the third, interior (the lip or 

 lahellum) difform. Stamens l(-2), gynandrous (the combined sexual organs forming the 

 column) : anther with definite poUinaria. Ovary inferior, mostly paracarpons : placentas 3, 

 many-ovulate. Pericarp capsular. Mmtryo undivided: no idbumen. — Perennial herbs, 

 often with tubers, the latter either above ground (aerial) or terrestrial ; leaves entire ; in- 

 florescence centripetal. 



Vanilla is the aromatic fruit of the genus Vanilla. 



Not having devoted a particular study to the tropical Orchids, I am glad to aciiiowledge 

 that the determination of the West Indian species, in most cases, is due to Dr. Lindley (in 

 PI. Wright, and Herh. Hook.), Dr. G. Reichenbach (in my own collection), and Dr. Brad- 

 ford, who gave descriptions and sketches, drawn froA the living plants in the island of Tri- 

 nidad, and communicated by Mr. Hance. The letters L. and K, added in parenthesis to 

 the names of species, refer to Dr. Lindley and Dr. Reichenbach, having confirmed the de- 

 termination of the specimens. 



Tribe I. MALAXIBE A— PoUinaria waxy, devoid of stalks (caudiculeej. Anthers in 

 B special terminal cavity of the column (anther-hed or clinandriumj, jointed at the hose. 



