1920] Ridley : Peninsular Siamese Plants. 125 



linear ones acuminate. Upper spikelets male, lower with 

 male and female flowers. Glumes in male linear lanceolate 

 bifid or sub-caudate at lip. Anthers linear • 2 in. long with 

 very slender filaments. Hermaphrodite spikelets smaller, 

 lower flowers female, upper ones male. Utriclei very nar- 

 row, thin sub-cylindric, deeply bifid, lobes acute. Ovary 

 ellipsoid, narrowed at the base and jointed at the top with 

 the style. Style pale, narrowed upwards. Stigmas 3, pur- 

 ple, hairy. 



Tasan ; white ; 6881 : Base of flower brownish ; In- 

 florescence whitish ; 7012. 



This remarkable species is allied to C. Helferi of Tenas- 

 serim differing in its much denser spikes and broader leaves. 

 The only other Carex of this set is C. scaposa of Cochin- 

 China and China, and this remarkable broad-leaved group 

 appears to be confined to this region. 



GRAMINEAE. 



355. Cyrtoccum pilipes, Stapf. (Panicum pilipes, Nees.). 



Tapli : Fruit brown to yellow ; 6765. Distrib. Tropical 

 Asia and Polynesia. 



356. Thysanolaena acarifera, Nees. 



Koh Jam Yai oft' Takuapa : A dwarf form ; 6637. 

 Distrib. Tropical Asia. 



357. Neyraudia madagascariensis, Hook. fil. 



Tasan ; 6930. Klong Bagalae : 6585. Distrib. Tropics. 

 Africa and Asia. 



358. Oxytenanthera nigrociliata, Munro. 



Tasan ; 7054. Distrib. India, Malay Peninsula, 

 Sumatra, Java. 



GNETACEAE. 



359. Gnetum Brunoniana, Griff. 



Tasan : Green, terminal spike whitish ; scandent bush, 

 9 ft. ; 7026 : Yellowish-white ; Bush ; 6870. Distrib. Tenas- 

 serim, Malay Peninsula. 



360. Gnetum scandens, Roxb. 



Tasan : Fruit ; green ; 6902. Distrib. India, Malaya. 



CYCADACEAE. 



361. Cycas siamensis ? 



Koh Gah : Cone and leaf from one tree, young fruit 

 from second tree, ripe fruit from third tree ; 6590. Only a 

 young male cone received : I am not sure whether it is C. 

 siamensis or C. Rumphii. 



FERNS. 



362. Alsophila latebrosa, Hook. 



Tasan : A verv pubescent form ; 7017 : Glabrous form ; 

 6868. Distrib. Indo-Malaya. 



