Classification of Plants 



277 



There are two species: in B. p€cliuata^ R. Br., the lashes are pointed 

 and curve downward; in the rarer species, B. Etlialw, Bolus, they curve 

 upward, adn each is tipped by a tiny knob. The solitary flowers are white, 



Fig. 249. — Polvstachya Olloniaiia, Reichb., an epiphytic genus w ith tuberi- 

 fonn stem bases. The flo\\ers are j'ellow. 



delicately tinged with purple. Leaf solitary, radical, flat on the soil. B. 

 pectinata, R. Br., extends from the Cape peninsula to Grahamstown. 

 Flowering in November and Deccinber. 



Satyrium is distinguished from otlier OrclTids by tlie two 

 spurs of tlie liood-shaped lip at the back of the flower (i.e. 

 ne.xt to the stalk). The sepals and two petals form the lower 

 portion of the flower. The anther is in front, as the ovary is 



