ORCHID STUDIES, XIV 
BY 
Louis O. WILLIAMS 
A NEW GENUS OF THE ORCHIDACEAE FROM BURMA 
IN a collection of orchids sent for determination by 
Mr. F. G. Dickason, the following new genus was noted. 
Dickasonia L. O. Williams gen. nov. Tribus Kero- 
sphaereae, subtribus Coelogyneae, Orchidacearum. 
Herbae epiphyticae. Pseudobulbi perennes, unifoliati 
(rare bifoliati). Folia lanceolata vel elliptica, petiolata, 
cum nervis quinque ad novem prominentibus, vernatione 
convoluta. Inflorescentia lateralis; racemus pauciflorus, 
plusminusve unilateralis. Sepala similia, libera, dorso 
-arinata. Petala sepalis similia vel leviter minora. La- 
bellum columnae adnatum, immobile, integrum, basi 
valdissime gibbosum vel leviter saccatum, ecallosum. 
Columna brevis, apoda; anthera operculata, incumbens, 
antherae loculi biloculares; pollinia quatuor, cerea; ros- 
tellum integrum; stigma semiorbiculare, margine prom- 
inenti. 
Epiphytic herbs. Pseudobulbs perennial, unifoliate 
(rarely bifoliate), vernicose. Leaves lanceolate or ellip- 
tic, petiolate, with five to nine prominent nerves, verna- 
tion convolute. Inflorescence lateral, from the base of a 
pseudobulb; raceme few-flowered, usually unilateral. 
Sepals similar, free, carinate dorsally especially along the 
mid-nerve. Petals similar to the sepals but usually a little 
smaller. Lip adnate to the column, immobile, entire, 
strongly gibbous or somewhat saccate at base, ecallose. 
Column short, about one third as long as the petals, 
footless; anther operculate, incumbent, enclosed in the 
clinandrium, loculi of the anther bilocular; pollinia four, 
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