298 WILLIAM CRAWFORD WILLIAMSON. 



acuminatis ; floribus 2-3, sepalo dorsali cum petalis in galeara 

 coalite, hac postico in calcar longum continnata, apice acuta, et 

 cum lateribus aiitice supra basin excavatis ; sepalis lateralibus 

 rhomboideo-ovatis acutis ; labello longissimo, basi medioque rursus 

 reflexa, in calcar latente, apicc dilate crispulato subtrilobulo ; 

 restelli brachiis magnis, margine involutis, apice glanduliferis 

 arcuatis. 



Hab. Deep forest, Wimi, Ruwenzori, 7000-8000 ft., June 

 (rains), 1894, No. 7944. 



A weak little plant of the habit of JHsperis Anthoceros Echb. f. 

 The membranous subsessile leaves are 1^-lf in. long, 1-1 5 in. bread ; 

 the acuminate bracts resemble them in texture, and are G-8 lines 

 long by 2-3 broad. The flowers on the long (8-10 lines) narrow 

 sessile ovaries are about $ in. long. The hood, in which it is 

 impossible to separate sepals from petals, measures 7 lines from 

 the apex to the blunt end of the uniform straight spur (4^ lines). 

 The rounded sides of the petals recede into a blunt incision 

 anteriorly. The lateral sepals are 4^- by 3 lines ; they bear a 

 short conical saccule on the anterior side above the base. The lip 

 is 11 lines long, sharply recurved at its base, passing between the 

 large branches of the rostellum and down the spur, near the end 

 of which it is again sharply bent forward, bringing the expanded 

 apex to the mouth of the flower ; the lower half is filiform, the 

 upper slightly wider, but very narrowly linear ; the expanded tip is 

 1^ lines broad ; at the median bend en the inside is a short filiform 

 appendage a little ever 1 line long. 



An interesting little plant, at first sight apparently conspecific 

 with D. Anthoceros Rchb. f., from Abyssinia and Natal. It differs, 

 however, in its acuminate bracts and important floral particulars, 

 the lateral sepals being larger, more rhomboid in shape, and pomted, 

 the petals having a deep incision above the base, and the very 

 peculiar lip being more than twice as long and bent double, and 

 appendaged at the middle. 



LiPARis GuiNEENsis Lindl. in Bot. Reg. 1835, t. 1671. 



Hab. Butagu, Ruwenzori, about 9000 ft., July (rains), 1894, 

 No. 8056. 



Distrib. West Tropical Africa. 



^¥ILLIAM CRAWFORD WILLIAMSON. 



William Crawford Williamson was born at Scarborough, on 

 Nov. 24th, 1816. His father was much devoied to geology, 

 collected the fossils of the Yorkshire Oolites, and communicated 

 many specimens to Brongniarfc for his works on fossil plants. The 

 son became interested in his father's studies : when only fifteen 

 years of age he began to assist Liudley and Hutton in their Fossil 

 Flora, to which work he supplied descriptions and drawings for 32 

 plates, a seventh of the whole work. The first plate engraved 

 from his drawing is CydoiJteris Beanii, which was published in 



