ORCHIDACE^E. 653 



minate ; lip 3-cleft, the lateral lobes ovate-oblong, the middle lobe longer, 

 linear-setaceous. — With the preeeding. — Stem l°-2° high. Leaves 2'-5' 

 long. Flowers 1|' - 2# long. 



POLYSTACHYA, Hook. 



Two upper sepals broad, gibbous, connivent. Petals small. Lip jointed, 

 sessile, 3-lobed. Anthers lid-like, free. Pollen-masses 4, hemispherical, waxy. 

 — Epiphytes. Stem leafy near the base. Flowers small, in simple or 

 compound racemes. 



P. luteola, Hook. Stem (l°-2° high) tuberous at base, longer than the 

 few lance-oblong rigid leaves; raceme compound; flowers greenish yellow; 

 the lip obovate, oblong, downy within, the lateral lobes small, the middle 

 one broad and recurved. — On various trees, South Florida. 



DENDROPHYLAX, Reichenbach, f. 



Sepals and petals spreading. Lip erect, 3-lobed, the lateral lobes small 

 angular, the middle one with 2 widely spreading lobes. Spur very long, 

 filiform. Column short. Pollen-masses 2. — Epiphytes. Scape leafless, in 

 ours bearing a single large white flower. 



D. Lindenii, Reichenbach, f. Scape filiform (3' -4' long); sepals and 

 petals lanceolate ; segments of the middle lobe of the lip lanceolate curved, 

 attenuate ; capsule stipitate, oval, smooth. — On Oreudoxa regia, South 

 Florida (Curtis). 



VANILLA, Swartz. 



Lip adnate to the column, convolute; perianth jointed at the base, spread- 

 ing. Column naked. Pollen-masses 2. — Stem climbing by rootlets. Leaves 

 jointed at the base. Flowers large, in axillary racemes. Capsule pulpy 

 within. 



V. plamfolia, Andr. Stem cylindrical ; leaves fleshy, oblong, acute, 

 contracted at the base {o -T long); bracts leafy: flowers (2' long) green, 

 the sepals and petals lance-oblong; lip serrate at the apex, thickened below, 

 slightly crested in the middle; capsule cylindrical (6' long). — Borders of the 

 Everglades ( Curtiss). 



CYRTOPODIUM, R. Br. 



Sepals and petals alike, spreading. Lip clawed, continuous with the base 

 of the column, incurved, 3-lobed. Pollen-masses 2, the short stalk linear. 

 Gland ovate. — Terrestrial. Scape sheathed, separate from the leaves. 

 Flowers racemose or panicled. 



C. punctatum, Lindl. Scape tall; loaves broadly lanceolate, strongly 

 3-ribbed (1±' wide) ; flowers in a simple panicle (G"-8" long) ; bracts leafy, 

 Ian oolate, undulate, spreading; lepals and petals greenish white, spotted; 

 middle lobe of the lip emarginate. — Miami, South Florida (Garber). 

 55* 



