16. EuLOPHiA.] 159. ORCHIBACEJE. 



oblong-ovate subacute or very obtuse. Petals broader elliptic 5-7- 

 iierved obtuse. Lip sessile, base adnate to the lateral sepals, saccate 

 with spreading nerves, subpanduriform upwards with 2 thick crenate 

 lamellae on the palate, and midrib greatly thickened and tubercled 

 towards the truncate emarginate tip. Column very short. 



Bettiah, Hieronymus ! Kalahandi plateau, Cooper ! Fl, April-May, after the 

 grass fires. Leaves developed in Aiigiist. 



The Kalahandi specimen was identified as i/.f.r^ZaHafa at the Calcutta Herbarium 

 but it is a very poor one. The young leafy shoots and the scape are siurounded by 

 one or two short broad common sheaths • 5-1" long as described for E. explanata, 

 but most of the description of the flowers is taken from the F.B.I., not from the 

 specimen which has only one flower left on it. Fully developed leaves are large, 

 broadly eUiptic, 9-12" by i", or lower only 5 bj^ 3", petioled, very shortly acuminate, 



17. DENDROBIUM, Swartz. 



Epiphytes with pseudobulbs or thickened or elongated stems. 

 Leaves never plicate. Flowers often large and handsome, in 1-many- 

 fld. racemes. Sepals subequal, lateral obliquely adnate to the foot 

 of the column, and forming with it a sac or mentum. Lip contracted 

 at the base, rarely clawed, adnate to and incumbent on the foot of 

 the column, its side-lobes, if any, embracing the column or spreading, 

 its terminal lobe variously formed, palate often lamellate. Column 

 short, angled or 2-toothed at the top, anther opercular, at first erect 

 (in the same axis as the column), ultimately opercular and versatile 

 attached by the middle of the back, 2-celled, pollinia 4 free, ovoid or 

 oblong, compressed, closely collateral in pairs in each cell. 



I. Inflorescence apparently terminal (from the base of a 

 terminal arrested internode) or also lateral : — 



A. Pseudobulbs short ovoid tufted. L. 2-3 linear. Fls. 



small, white or pmphsh in short dense racemes . 1. pygmceum. 



B. Stems elongate : — 



Stems copiously branched. Racemes very short, all 

 terminal. Fls. few, small . . . . .2. herbaceum. 



Stems thick, leafy. Eacemes mostly lateral. Fls. 

 very large, white ....... 3. formosum. 



II. Inflorescence distinctly lateral : — 



A. Mentum urceolate. Fls. few crowded in short racemes 



on a sheathed pedimcle, small, dingy yellow . . 4. bicameratum-; 



B. Mentum conic. Fls. 1-3 in short racemes from the 



leafless stems :— 



1. Petals lanceolate, as narrow as the sepals. Fls. 1", 



yelloMish ...... .5. macrostachyum. 



2. Petals broad. Flowers never yellow (exc. lip) : — 



a. Fls. very large, 3-3-5" diam., magenta . . 6. regium. ' 



b. Fls. 1-5-2 -5" diam., pink, purple or white. L. 



linear -lanceolate :— 

 i. Stems slender, pendulous : — 



Sep. lanceolate acute. Lip with 1 or 2 broad 

 purple blotches . . . . . .7. transparens. 



Sep. oblong-lanc. obtuse. Lip purple edged 



with white, base yellow .... amoenum 



ii. Stems stout erect. Sep. oblong obtuse. Lip (p. 1174). 



yellow . . , . . . .8. crepidatum. 



3. Mentum short stout. Fls. large in 6-15-fld. racemes, 



mostly from the leafing stems : — 

 Lip not calceolar. Fls. golden yellow . . .9. fimbriatum. 



Lip calceolar. Fls. yellow, piuplish or white . . 10. moschatum. 



1172 



