234 THE BOTANY OF CHRISTMAS ISLAND. 



Ph. congesta, Rolfe. 



A small orchid with tufted spikes of white flowers. 

 Common on trees on the Plateau. Endemic. 



Saccolabium Archytas, Ridley. 



Very common especially on the trees of the lower 

 Terraces. Endemic. This pretty plant grows in masses 

 on the bare trunks of the Gyrocarpus and other trees. 

 The flowers are white with pink spots. 



Dendrocolla carinatifolia, Ridley. 



Sarcochilus carinatifolius, Ridley. 



Less common than the last, and chiefly on the trees 

 on the Plateau. One plant I found had the petals of a 

 pale ochre colour. 



Collected also by Andrews. It occurs also on Pulau 

 Aar, an Island off the East Coast of Johor. 



Thelasis elongata, Bl ? A quantity of plants of a Thelasis 

 resembling Th. elongata Bl. occurred on trees in the 

 plateau near Murray Hill, no trace of flowers, was to be 

 seen, and I have failed to flower it in the Botanic 

 Gardens. Thelasis elongata, Bl. is a native of Java. 



Corymbis angusta, n. sp. 



Stems 2-3 feet tall slender woody. Leaves lanceo- 

 late acuminate acute, dark green 8-11 inches long 2-2^ 

 inches wide speaths ribbed. Panicles 2 or 3, 4 inches 

 long lax. Bracts ovate lanceolate acute J inch long. 

 Pedicels J inch long rather slender. Flowers white 

 smaller than usual. Sepals 1^ inch long very narrowly 

 linear. Petals similar. Lip as long, claw very long and 

 narrow channelled, limb ovate shortly cusped edges 

 crisped, ^ inch across and little longer. Column slender 

 1 inch long, anther lanceolate blunt. Stigma ovate 

 triangular. Rostellum very small narrow deeply bifid. 

 Chinandrium sides winged. Fruit 1 inch long as long 

 as the column costae very narrow. 



Jour. Straits Branch 



