11. Thunia.] 159. ORCHIBACEJS. 



pointed out by Rolfe, has a somewhat elongate raceme, more and much larger 

 flowers, a yellow disc to the lip and a few lilac radiating veins on the side-lobes. 

 It has not "been found in our area. 



12. PHAJUS, Lour. 

 Stout terrestrial orchids with large plaited leaves, usually pesudo- 

 bulbous with the inflorescence lateral on the pseudobulb or axillary 

 or terminal. Flowers large, racemose. Sepals and petals subequal. 

 Lip adnate to the base of the column and embracing it, erect with 

 gibbous or spurred base. Column long stout without a foot. Anther 

 incompletely 4-celled, pollinia 8, attached by fours to a granular 

 viscus. 



Leaves 1-2 ft. Scapes 2-4 ft. Fls. 4-5" diam 1. WalUchii. 



Leaves 1 ft. Scapes 6-9". Fls. 3" diam. . . . . .2. nanus. 



1. P. Wallichii, Lindl. 



A handsome terrestrial orchid with large ovoid pseudobulbs 

 sheathed by the plicate leaf bases. Leaves very large 1-2 ft. long by 

 3-6" broad, elliptic-lanceolate acuminate plicate, long-petioled. 

 Flowers in tall erect racemes from the side of the pseudobulbs 4-5" 

 diam. Sepals and petals spreading, pure white or sometimes coloured 

 rosy-yellow or brown, especially inside, lanceolate. Lip with a tubular 

 pink or red portion yellow at the base and a variously coloured 

 truncate crisped midlobe, usually red. Spur •25-' 75" long. Capsule 

 2-2 • 5". 



In its native state usually found in swampy groimd near streams. Often 

 cultivated. I cannot recall having seen it wild in our area, though it is so close 

 to it in the Tarai and Duars. Fl. April-July. Fr. Sept.-Oct. 



2. P. nanus. Hook. f. 



This was first found by Gamble in the Buxa Duars, and was afterwards collected 

 by me in the Jalpaiguri district much further west in grass lands. It may possibly 

 therefore be found in similar grass lands in Purneah. Fl. Feb. 



Pseudobulbs according to Hooker, and I have no note of any. Leaves up to 

 1 ft. including the petiole into which the blade tapers, about 1-1 • 5" broad. Scapes 

 shorter than the leaves and axillary, 8"-l ft., peduncle with narrow convolute or 

 cymbiform bracts ■ 7-1" long. Flowers few at the top of the scape. Sepals and 

 petals spreading 1 • 5-1 • 7" long lanceolate. Lip 1" tubular with rounded spreading 

 apex shghtly crisped, spur -I-'IS" (0, J.D.H.). 



13. ACANTHEPHIPPIUM, Blume. 



Terrestrial, bulbous with several broad plaited petioled leaves. 

 Flowers few large fleshy in very short lateral racemes, pedicels thick- 

 ened after flowering. Sepals broad, cohering into a ventricose tube, 

 lateral adnate to the foot of the column and forming a very large 

 saccate mentum. Petals erect narrow, included. Lip very small, 

 stipitate on the foot of the column, inflexed, with broad erect lateral 

 lobes and entire recurved midlobe, throat with a ridge or lamellae. 

 Column short, stout, with very long inflexed foot. Anther 2-celled, 

 pollinia 8, erect, cohering by a granular mass. 



1. A. striatum, Lindl. 



A stout orchid with elongate-obpj'riform pseudobulbs 3-4" long 

 and 1-5" diam., a scarious-sheathed stem 4-8" high and 2-3 large 



lies 



