1920] Ridley : Peninsular Siamese Plants. 119 



Klong Bagatae : Flower yellow, lip white ; 6561. 



Allied to T. lanceolaria, Bl. of Java, but the leaves are 

 broader unequally bilobed. The sepals and petals are dis- 

 tinctly spotted with brown or dull red. 



306. Dendrocolla trichoglottis, Ridl. 



Tasan : Yellowish-white, top of hood yellow ; 6854. 

 Distrib. Malay Peninsula. A plant labelled Sarcochilus 

 hystrix, Rehb. Mergui (Griffith) in Herb, Lindley, seems 

 to be this species. 



307. Acriopsis indica, Wight. 



Tapli : Greenish, spotted brown ; lip white ; epiphyte ; 

 6768. Distrib. Tenasserim, Penang. 



308. Podochilus lucescens, Bl. 



Tasan : Flowers white ; terminal ; 7006, 9049. Distrib. 

 Tenasserim, Malay Peninsula, Java. The specimens in their 

 narrower leaves approach P. khasiyana. Hook. f. but the 

 lip is broad ovate as in P. lucescens and nearly trilobed at 

 base. 



309. Galeola hydra, Rchb. fil. 



Tasan : Lemon yellow, interior petal blotched crimson 

 brown on upper parts of inside ; 6841. Distrib. Sikkim, 

 Tenasserim, Malay Peninsula, Sumatra, Java. 



310. Didymoplexis, sp. 



Tasan : White ; No leaves ; 4 in. ; 6969. The single 

 specimen of this little plant differs from D. pallens in its 

 very slender stem and smaller flower, but the flower is so 

 delicate that it is almost impossible to dissect it and I am 

 unwilling to make a new species of it. 



ZINGIBERACEAE. 



311. Globba pendula, Roxb. 



Tasan : Orange yellow with one dark brown spot ; 6882. 

 Distrib. Tenasserim. 



312. Costus speciosus var. argyrophyllus. 



Tasan ; White ; lip and hood blotched yellow ; calyx 

 red ; 7001. Distrib. Tropical Asia. 



313. Amomum argyrophyllum, sp. nov. 



Rhizome slender elongate, stem 3 ft. Leaves lanceolate 

 acuminate, long, narrowed to petiole, drying pale silvery 

 silky on the back, 14 in. long, 2-5 in. wide • petiole 4 in. 

 long, sheaths 12 in., ligule short, oblong, rounded adnate 

 to petiole. Capitulum conic, 2 in. long very shortly pedun- 

 cled. Bracts coriaceous, glabrous oblong-lanceolate, blunt 

 about 12, the largest 1-25 in. long, -75 in. wide, striate. 

 Inner bracts lanceolate 1 in. long. Calyx 1-25 in. long, 

 narrowly funnel-shaped with three short apiculate lobes. 

 Corolla tube 2 in. long, slender at base, dilate upwards, 

 lobes upper broad lanceolate, hooded, laterals lanceolate, 

 1 '25 in. long, -5 in. wide. Lip obovate, entire, 1 '5 in. long, 



