Materials for a Flora of the Malayan Peninfuila. 199. 



Pseiulobulbs distant, rhizome long stout 2. Th. capitaia. 

 Raceme long and lax . . . . . . . , 3. Th. macrobulhon. 



1. Th. elongata, B1. Oreh. Arch. Ind. p. 23. PI. t. 7. fig. 2. 

 Pseudobulbs ovoid depressed ^ inch long on a short rhizome. Leaf 

 ligulate blunt narrowed at the base 1^-3 inches long ^-^ inch wide. 

 Scape 3-4 inches long racemose portion ^-3 inches long, covered 

 with reflexed ovate acuminate persistent bracts. Flowers y\ inch 

 long greenish yellow. Sepals oblong acute keeled. Petals thinner 

 and shorter spathulate. Lip as long, ovate lanceolate. Column 

 short. Eostellum lanceolate bifid. Capsule very small oblong, 

 Miq, Fl. Ind. Bat. III. 701. Hook. fil. Fl. Brit. Ind. VI. 86. Schlechter 

 Monogr. Podochil. p. 70. Th. triptera, Rchb, fil. Bonplandia III, 

 219. Th. ZoUincjeri, Rchb. fil. I.e. V. 37. Th. honghongensis, Rolfe, 

 Kew Bull. 1896. 199. 



Singapore: Kranji (Ridley 173) ; Jolior: Ulu Batu Pahat (Kel- 

 sall) ; Pahang: Pekan (Ridley); Perak (Scortechini) ; Lankawi 

 (Ridley), Distrib, Malay Islands as far as the Philippines, Hongkong 

 and Admiralty Islands. 



2. Th. capitata, B1. Bijdr, 386, Orch, Arch. Ind. 20. t. 7. fig. 

 1. Rhizome very stout, pseudobulljs rather distant nearly an inch 

 long, ovoid globose. Leaf 4 inches long \ inch wide, lorate ligulate 

 blunt. Scape fairly stout 6 inches long with a sheath \ inch long in 

 the middle raceme stout 1 inch long. Bracts ovate acute. Flowers 

 green j\ inch long. Sepals lanceolate acute keeled. Petals similar 

 blunt. Lip ovate lanceolate concave. Lindl, Orch, PI, 253, Miq, Fl, 

 Ind. Bat. 700, Hook, fil, Fl, Brit. Ind. YI. 86. Schlechter I.e. 69. 

 Th. ochreata, Lindl, Journ, Linn, Soc, III. 63. 27;. elongata, var, 

 major, Ridl. Journ, Linn, Soc. XXXII, 393. 



Pahang: Tahan River (Ridley) ; Selangor: Kwala Lumpur Caves 

 (Ridley); Perak (Scortechini). Distrib, Sumatra, Java, Borneo, 



I doubt very much that this is more than a form of Th. elongata 

 Bl, except for the stout long rhizome, larger leaf and thicker scape, 

 with a rather shorter raceme, the plants are quite similar. It occurs 

 in dense wet woods, while Th. elongata frequents more open lighter 

 spots, 



3. Th, macrobulbon, Ridl, Journ, Linn, Soc, XXXII, 393, 

 Roots copious and slender, pseudobulbs flask shaped of two internodes, 

 the lower one globose the upper cylindric, an inch long. Leaves two 

 lower one an inch long \ inch wide, the upper one 4-6 inches long 1 

 inch wide lanceolate or oblong petioled. Scape 6-10 inches long, lower 

 half nude except for a few acuminate sheatlis raceme lax many flow- 

 ered. Flowers sessile green. Bracts ^ inch long lanceolate cuspidate. 

 Sepals oblong obtuse not keeled. Petals smaller. Lip fleshy shorter 



