MR. SCOTT ELLIOT S TROPICAL AFRICAN ORCHIDS. 



29t 



DisA Gregoriana Reudlo in Journ. Linn. Sac. xxx. 398. 



Hab. Kuwenzori; iiuuigu, ISemliki Valley, 10,UU0-12,000 ft., 

 July (raiiis), No. 8058; Yeria, May, above forest, 1U,UU0 ft., No. 

 7850, and amongst short buslies and tree heath over 10,000 ft., 

 No. 78G0. 



The lioweis of the Kuwenzori plants have a slightly longer lip, 

 and are sometimes larger, than tliose of the type collected by Dr. 

 Gregory at 10,400 ft. on Mt. Kenya. 



iJisa Stairsii Kranzl. in Ganl. Chron. xii. (1892), 728, brought 

 from Euwenzori by Lieut. Stairs, is evidently, from the description, 

 closely allied, but differs in having broadly oval, not ligulate, petals, 

 and obovate, not oblong, sepals. 



D. WisHmanmi Kranzl. in Fjianzemoelt Ost-Aj'r. pt. C. 154 (1895), 

 from Kilimanjaro, is the same as B. Gregoriana. 



Disa erubescens, sp. nov. Planta tota colore rubro plus 

 minus saturata ; foliis grainineis ; caule crassiusculo, bracteis 

 supra basin vaginautem appressis, superne deminutis et transitum 

 in bracteas ilorentes prabentibus vestito, a spica sublaxa terminato; 

 Horibus pro genere magnis, bracteas ovales vel obovato-ovales 

 acuminatas paullo superantibus ; sepalo dorsali magno spathulato, 

 parte iuferiore super antheram arcuata, parte superiore et latiore 

 norizontaliter directa, et sub medium calcare plus minus erecto 

 instructa, sep. lateralibus oblongis, petalis cum sep. doraale 

 parallelis, basi semicordatis, apice in caudam longam geniculatam 

 productis ; labello filiforme sepalis lateralibus breviore ; columna 

 brevi, rostello breviter cucullato. 



Hab. Kuwenzori; sunny hillsides, 6-7000 ft., No. 7809. 



The flowering-stem is about 20 in. in height, and apparently 

 appears before the leaves ; a shoot consisting of two leaves only, 

 and probably immature, is present, but detaciied from the flowering 

 specimens. These grass-like linear tapering leaves are strongly 

 tinged with red, like the rest of the plant, and reach 1 ft. in length. 

 In the lower stem-bracts a deeply-spotted basal sheath is continued 

 into an ovate-lanceolate adpressed blade; tne lowest reach 3 in. in 

 length. The oblong spike is 3-5 in. long. The lower bracts reach 

 1^ m., the upper ones are a little over 1 m., the sessile cylindrical 

 ovary being f in. The flowers are deep red. The large dorsal 

 sepal is 1 in. long ; the claw has involute edges, and broadens 

 above into a shallowly hooded blade 5 lines broad, bearing from 

 the centre of its back the 5-lines-long spur, which becomes slightly 

 swollen in the lower part. The lateral sepals have a shghtly 

 thickened and minutely hooded tip, and are scarcely f in. long by 

 ^ broad. The petals have an erect base, 3^ by 2^ lines, in siiape 

 broadly cordate with the posterior half removed, continued into a 

 linear apex with involute edges, -^ in. long, and strongly geniculate 

 at about the middle. The thread-like lip is 5^ lines long. The 

 stigma IS large and rounded ; the erect anthers are 2^ lines long. 



A very distinct species, characterised by the strange sliape of 

 its dorsal sepal and petals. 



Disperis nemorosa, sp. nov. Herba semipedalis glabra, 

 caule debili medio bifoliato ; foliis oppositis ovatis acutis, uracteis 



