Fhrcatia.'] CXLVIII. ORCHIDE.E. (J. D. Hooker.) 811 



ovary, sepals acute, mentum rounded, lip with a short saccate claw and 

 triangular blade. Thelasis elegans, Blume Mus. Hot. ii. 187. 



KHASIA MTS. ; at Pomerang, alt. 4-5000 ft., J. D. H. Sf T. T. CEYLON, 

 Macrae. 



Stems densely tufted. Leaves coriaceous, obtuse, 1-nerved. Spikes 3-1 in., 

 dense-fld. ; flowers white; lateral sepals T ^ in. long, triangular, acute, 1-nerved; 

 petals broadly ovate ; lip obscurely 3-nerved ; column very short ; anther mem- 

 branous; pollinia free, globosely pyriforra. I do not find the hairs on the lip 

 described by Lindley. 



0. P. perpusilla* Benth. in Gen. PI. iii. 511 ; pseudobulbs clustered 

 depressed, scape filiform, bracts ovate-lanceolate, sepals obtuse, lateral 

 lanceolate, mentnm obscure, lip lanceolate, margins waved. Eria 

 (Phreatia) perpusilla, Par. Sf Reichb.f. in Trans. Linn. toe. xxx. 148. 



TENASSERIM ; at Moulmein, Lobb, Parish. 



Pseudobulbs ^ | in. diam., smooth. Leaves not seen. Scape 2-2% in. ; spike 

 -f in. ; bracts -J^ in., hyaline ; sepals about as long. 



4. P. nana, Hooh.f.Ic. Plant, ined. ; stems short leafy, leaves ^-f in. 

 narrowly ensiform acute, spikes axillary as long as the leaves capillary 

 decurved, bracts ovate acute, sepals broadly ovate and very small petals 

 obtuse, lip ovate obtuse. 



PEEAK, Scortechini, King^s Collector. 



Stems densely tufted, l|-2 in., often decurved. Leaves about ^ in. diam., 

 fleshy ; flowers $ in. diam. ; ovary ellipsoid, smooth. 



5. P. minutiflora, Lindl. in Journ. Linn. Soc. iii. 62 ; leaves 

 equitant linear obtuse recurved, spike erect very slender as long as the 

 leaves, bracts triangular setaceous, lip obovate concave. 



SINGAPORE, Ridley (in lift.). DISTRIB. Borneo. 



Leaves about 2 in. long ; flowers the smallest of the genus, in a very slender erect 

 spike ; bracts brown, setaceous, broad at the base. Description from Lindley. I 

 have seen no specimens. 



6. P. parvula, Benth. in Herb. Kew\ stem short, leaves \ in. im- 

 bricating subcylindric acute, scape very short,' spikes axillary decurved, 

 bracts cymbiform shorter than the ovary, mentum 0, lip and petals 

 minute, the latter cymbiform. Octarrhena parvula, Thwaites Enum. 

 3072. 



CEYLON ; Central Province, in forests, alt. 3-4000 ft., Thwaites. 



Stems 1 in., densely tufted, stout, leafy from the base. Leaves spreading. 

 Spikes longer ; rachis stout ; flowers pale green ; lateral sepals ^ in. long, rounded, 

 concave, nerveless ; petals oblong ; lip close under the broad short column ; polliuia 

 48, free, globose. A remarkable little plant overlooked by Bentham in Gen. Plant., 

 but the specimen he has placed in Phreatia, though there is no foot to the column 

 or mentum. Thwaites wrongly referred it to Vandece. 



21. PACHYST03YEA, Blume. (See 21/2. IPSEA.) 



Terrestrial ; rhizome underground, nodose. Leaves 1-2, often post- 

 floral, narrow, plaited. Scape sheathed; flowers rather small, racemed, 

 pendulous ; bracts large, scarious. Sepals subequal ; lateral adnate to 

 the base of the column. Lip sessile on the base of the column, erect; 



