A SCIENTIFIC EXPEDITION TO TEMENGOH. Tl 
AROIDEAE. 
Pistia stratotes, LL. common in ditches near Lenggong. 
Cryptocoryne affinis, N. E. Br. In shallow streams on gravelly 
banks thickly covering them with a mat of leaves. The 
spathe appears always to lie horizontal and practically 
under the water, at least I never saw it erect. The 
bullate leaves purpie beneath, dark green above are very 
characteristic, and the spirally twisted white and purple 
lamina is very unlike that of other species. Abundant 
in the stream behind the rest house at Grit and in a 
stream at Ulu Temengoh. 
Arisaema Roxburghit, Ulu Temengoh. 
Amorphophallus Prainiz, Hook fil. What appeared to be this 
was abundant in leaf round Temengoh and in all the 
woods to Lenggong. hide 
Alocasia denudata, Kugl. Common about Temengoh. 
Homalomena coerulescens, Jangh. Woods Temengoh. 
_H. pumila, Hook. fil. and ‘its variety Purpw:asceis were 
common in damp spots on banks at Temengoh. 
A. undalatifolia, n. sp. 
A small tufted plant, leaves ovate narrowed slightly 
at the base cr rounded, apex acute or cuspidate, margins 
undulate curved in on the under surface so as to appear 
crenulatefrom above, glabrous grey above when dry, paler 
beneath, nerves invisible above, 4 pairs beneath elevated 
ascending towards the tip somewhat, straight 14 inch 
long 3-? inch wide, petiole slender half an inch long. 
Peduncle slender very short under half an inch long, 
spathe ovoid with a slender mucro, ¢inchlong. Spadix 
shorter than the spathe nearly sessile. Male portion twice 
as long as female, conic gradually tapering upwards, 
acute, flowers few and large, no nude portion at the base. 
R: A. Soc., No. 57, I910. 
