186 ORCHIDACES. [ Liparis. 
Dehra Dun (Falconer, Mackinnon, Duthie). Flowersin. Sep. DisrRin. : 
Subtrop. Himalaya in Garhwal and Kumaon, up to 3,000 ft., and 
eastwards to Sikkim, Bhutan and the Khasia Hills, also on the Nil- 
giris and in Ceylon, extending to China and to the Malay and Pacific 
Islands. A widely distributed and polymorphic species. The 
Dehra Dun plant agrees best with Lindley’s L. spathulata, which has 
shorter and thicker pseudobulbs, rather broader leaves and shorter 
racemes than in the type. Hooker observes that it occurs frequently 
in company with the form having long pseudobulbs, and that inter- 
mediates abound. 
4. DENDROBIUM, Swartz; Fl. Brit. Ind. v, 710. 
Epiphytic herbs. Pseudobulbs short and fleshy or elongate 
and stem-like, usually tufted. Leaves usually sessile and with 
slender bases, never plicate. Flowers solitary or in fascicles or 
racemes, often large and showy. Sepals subequal, the lateral 
pair obliquely adnate to the foot of the column and forming with it 
asacormentum. Petals usually similar tothe sepals. Lip sessile 
or clawed at the base, adnate to and incumbent on the foot of the 
column ; side-lobes embracing the column, or spreading, or absent ; 
terminal lobe broad or narrow, flat convex concave or saccate, 
the disk sometimes lamellate. Column short, with a long or short 
foot and with usually a nectar-secreting cavity at its extremity, 
the apex angled or 2-toothed. Anther 2-celled; pollinia 4, equal 
in length, usually all slightly coherent but sometimes in free pairs, 
ovoid or oblong, slightly compressed, waxy.—Species 700 or more, 
in Temp. and Trop. regions of both hemispheres. 
Flowers small, not exceeding } in. across, dull- . 
yellow with stripes of red spots . : . 1. D. bicameratum. 
Flowers about 1} in. across or larger :— 
Basal portion of lip convolute :— 
Apical portion of lip pale-yellow, basal 
portion white . . 2. D. primulinum. 
base 
Lip convolute throughout its length, pale- 
yellow with reddish-purple veins. . 4. D. Gamblei. 
Lip pale-yellow with purple veins at the 
: : 3 3.' D. Pierardi.. 
