PLANTS OF PRINCE OF WALES ISLAND. 69 



TRIANDEIA— DIGYNIA. 

 Saccharum. 



1. S. offijcinarum, Sugar-cane. Mai. Toboo. 



Cultivated very successfully, and yields abundance of good 

 sugar. Manufactories of it were undertaken, but have been 

 deserted on account of the excessive price of labour. 



2. S. cylindricum, Willden 323. Lamarck. Encyclop. 1, p. 



588, t. 40, f. 2. S. Koenigii, Retz. obs. fasc. 5, p. 16, 

 N. 28. Gramen caricosum, Humph, p. 6, 17, t. 7, f. 2, A. 



Boot : creeping, jointed at the distance of an inch. Stalks 

 cespitose, jointed ; joints bearded. Panicle spiked, cylindri- 

 cal, pedicels three flowered. Malay Lalang. 



This grass springs up abundantly, in rich ground, which 

 has been cleared of the large timber, and afterwards neglected. 

 It then becomes the greatest obstacle to the labour of the 

 cultivator. Its habit and history are well delineated by 

 Kumphius. 



ARUNDO. 



A. trivaluis, H. 



Calyx three valved, three or four flowered, Stalks tall 

 (10 or 12 feet) piped, knotted. Leaves alternate, bifarious, 

 very long and narrow ; petioles vaginating, half the length of 

 the joints, villous at the origin of the leaf. Panicle terminal, 

 diffuse, large. Pedicels very slender, flowers minute. Calyx 

 Glume three or four flowered ; three valved, valves alternate, 

 lanceolate, the inner one longer. Cor : Glume, two valved, 

 valves lanceolate ; concave ; the outer longer, firmer, woolly at 

 the base and along the margin. Nect. Two scales, obovate 

 membranous, very small. Stamina and Pistilluin as in the 

 genus. Growing abundantly on the side of a hill near Soongey 

 Clooan. (Probably Neyrauclia madagascariensis) . 



R. A. Soc, No. 53. 1909- 



