TO LOWER SIAM. 199 



scrotiform, vu inch long, calli 2, elevated fleshy ridges at 

 the base of the midlobe, below over the spur-mouth a 

 thin lamina toothed, an elevated ridge along the lower 

 face of the spur inside. Column short, broad, rostel- 

 * lum. Anther cap skull-shaped with rather a long linear 

 obtuse beak. Pollinia globose, pedicel linear, oblong, disc 

 small, lanceolate. Capsule elliptic, i inch long, splitting 

 along one side. 



Setul on trees and rocks at Bukit Rajah Wang 

 (15226), Kasum (Curtis). 



Near S. hortensis, Ridl. but flowers smaller, all 

 yellow leaves, narrowerand longer, racemes more slender, 

 lip papillose and a different callus. 



S. latifolium var. strictum. 



Stem tall, straggling. Leaves linear, narrow, 7 inches 

 long, \ inch wide, conspicuously bilobed. Panicle ascend- 

 ing, 1 foot long, branches ascending. Flowers as in typical 

 latifolium, but the side lobes of the lip larger, oblong, 

 quadrate, truncate. 



Setul, Bukit Raja AVang (15223). The same form 

 on the limestone rocks at Batu Caves, Selangor. 



Distrib. whole peninsula and Sumatra. 



S. Scortechinii, Ridl. Lankawi (Curtis). Distrib. Malay 

 peninsula. 



S. secundum, Ridl. Lankawi (Curtis). 



Distrib. India, Cochin-China, Malay peninsula, 

 Sumatra, Borneo. 



S. fissum, Ridl. Lankawi (Curtis). Endemic. J 

 S. miniatum, var. citrinum, Lankawi Islands (Curtis), Perlis 

 on trees at Ginting Kabok and Kanga (14974). 

 Distrib. Malay islands, Java, and Philippines. 

 S'. bractcatum, Ridl. (sub sarcanthus). Ghirbee (Curtis). 

 Microsaccus brcoifolius, Sm. Kasum (Curtis). 



R. A. Soc, No. 59. I9H- 



