Classification of Plants 



277 



There are two species: in B. pectinata, R. Br., the lashes are pointed 

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

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



Fig. 249. — Polystachya Otfoniana, Reichb., an epiphytic genus with tuberi- 

 form stem bases. The flowers are yellow. 



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 December. 



Satyrium is distinguished from other Orchids by the two 

 spurs of the hood-shaped lip at the back of the fiower (i.e. 

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

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



