OBCHIDACE^. 653 



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

 linear-setaceous. — With the preceding. — 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-Iobed. Antiiers 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 ; 

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

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



DENDROPHYLAX, Reichenbach, f. 



Sepals and petals spreading. Lip erect, 3-lobed, t'le lateral lobes small 

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

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

 ours bearing a single large wliite 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 Oreodoxa 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 a.xillary racemes. Capsule pulpy 

 within. 



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

 contracted at tlie base (5' -7' 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, 

 (iland ovate. — Terrestrial. Scape sheathed, separate from the leaves. 

 Flowers racemose or panicled. 



C. punetatum, Lindl. Scape tall ; leaves broadly lanceolate, strongly 

 •3-ribbed (1^' wide) ; flowers in a simple panicle (6" -8" long) ; bracts leafy, 

 lanceolate, undulate, spreading; sepals and petals greenish white, spotted; 

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



