Feprvary, 1923] THE ORCHID REVIEW. 4a? 
same explorer in British Guiana, growing on the trunks of trees on the 
banks of the river Berbice. The stems are tufted, attenuated and leafy 
upwards, 18-24 or more inches high. Spikes terminal, few-flowered. 
Flowers 3-4 inches across vertically; sepals and petals brownish green, 
sometimes striated with light green; lip large, obscurely three-lobed, the 
side lobes forming a wide tube that is produced into a short spur; the tube 
white, spur green; front lobe white streaked with purple. 
G. nivalis has terete stems, 6-12 inches long, jointed at intervals of. 
about an inch, the internodes covered with a whitish sheath. Raceme 
short, few-flowered. Flowers two inches across vertically; sepals and: 
petals light olive-green; lip prolonged at the base into a yellow-green spur, 
white with a purple blotch on the disc. 
NOTES ON THE SEGMENTS OF ORCHID FLOWERS. 
T is common knowledge that the flowers of many Orchids contain six 
prominently displayed segments; three are known as sepals, two as 
petals, and one that is alluded to as the labellum or lip. In studying the 
structure of a flower, as well as in understanding the description of a 
:: L 
DENDROBIUM FARMERI, CATTLEYA BOWRINGIANA, 
S—sepals, P—petals. L—labellum. 
species or hybrid, it is necessary to be acquainted with the correct names- 
of the various segments, and for that reason the following notes may prove 
of value to amateurs. 
An examination of an Orchid flower will show that the various parts are 
