Mr Yapp, On Plants from the Malay Peninsula. 159 



Notes on new and interesting Plants from the Malay Penin- 

 sula. By R. H. Yapp, B.A., Gonville and Cains College, Cam- 

 bridge. 



[Received 26 March 1901.] 



With one or two exceptions, the plants which form the subject 

 of these notes were collected on Gunong Inas, a mountain nearly 

 6000 feet high, situated on the northern confines of Perak, one of 

 the western states of the Malay Peninsula. 



The mountain ranges of this region, which are only partially 

 explored and somewhat inaccessible, possess a wonderfully rich 

 flora, which is quite unaffected by the admixture of species intro- 

 duced from other tropical countries, which form such a marked 

 feature of the vegetation of the plains, especially in the neighbour- 

 hood of the rivers and sea-coast. A number of the species to be 

 mentioned are probably new, and these will be described else- 

 where in due course. Others are introduced here on account 

 of some special interest, biological or otherwise, which attaches to 

 them. 



Dicotyledons. 



In the Natural Order Polygalaceae there is a species of Poly- 

 gala, probably new, at least to the Peninsula, for, although very 

 closely allied to Polygala arillata, Hamilt., the latter species 

 also is unknown from the Malay Peninsula, though it is found 

 both in India and in the Malay Archipelago. The specimen 

 in question was found at a height of about 5000 feet, growing on 

 the ground in the jungle which, though dwarfed, still covers the 

 mountains even at this elevation. 



Among the Celastraceae, Euonymus Wrayi, King, a slender 

 shrub, 6 to 9 feet high, is interesting on account of its rarity. It 

 has been found only by two previous collectors, once in Perak and 

 once in Pahang. 



Of the Rubiaceae two plants merit attention. A species of 

 Lucinaea, which climbs by adventitious roots, and was found in 

 the low-lying lands at the foot of the mountain. It is identical 

 with an undescribed specimen in the Kew Herbarium, also from 

 Perak, collected by Ridley. 



