The Guiana Orchids. 2$i 



Tribe 2. — Vandea. 



1. Galeandra. — A genus of very handsome plants, 

 the flowers borne on the top of fleshy leafy stems in 

 drooping clusters, the lip bell or funnel shaped with a 

 spur. Four species : — 



1. G. Baueri ... Flowers yellow, with purple lines on the 



Up. 



2. G. Devoniana ... Flowers chocolate, lip white with pink 



lines. 



3. G. dives (cristata) ... Flowers pink and dark purple, 



4. G. juncea 



2. Polystachya. — Rather insignificant plants with yel- 

 low flowers growing in simple or branching spikes at 

 the top of leafy stems. Two species : — 



1. P. luteola ... Flower stems branching. 



2. P. species? ... Flower stems simple 



3. Cyrtopodium. -Magnificent plants with tall branch- 

 ing panicles or simple spikes of (generally) showy 

 flowers, rising from the sides of depressed or elongated 

 pseudo-bulbs. They are common on the sand-reefs, 

 some of the species having pseudo-bulbs two to three 

 feet high and panicles of brilliant yellow flowers st<ind- 

 ing five or six feet above the ground ; the most showy 

 of the sand orchids. Five species : — 



I. C. Andersonii ... Flowers yellow, wavy. 



I. C. cristatum ... Flowers yellow, lip crested. 



3. C. puntSatum ... Flowers yellow, dotted with red. 



4. C. parviflorum ... Flowers yellow, smaller than the others. 



5. C. (Cyrtopera) Wood- Flowers greenish yellow with dark crini- 



fordii son lip. 



4. Zygopetalum. — Epiphytes with pseudo-bulbs, thin 

 leaves and handsome flowers from below the bulbs. The 

 lip is almost flat and is therefore very conspicuous. 

 Eight species, the two last formerly placed in Huntleya : — 



1. Z. rostratuin .,. Flowerswhite, lip white with a violet crest. 



