AND THEIR MANAGEMENT. 237 



Disa. 



more being produced on each stem ; uj^per sepal ovate, 3in. 

 long, hooded, pointed at the apex, spurred at the base, deep 

 rose-coloured, with carmine veins; side sepals ovate-oblong, zJjin. 

 long, brilliant carmine-red ; petals and lip small, tinted orange. 

 Some varieties have the sepals orange-tinted, and others have 

 the hooded sepal coloured rose-purple. Introduced from Table 

 Mountain, near Cape Town, in 1S25. Syn. Z). uniflora. (Fig. 76, 

 for which we are indebted to the Editor of the '' Gardeners' 

 Chronicle"; B. M., t. 4073.) 



D. racemosa {Linn. /.). — Rootstock tuberous. Stem erect, 

 proliferous at the base, unbranched, leafy. Lower leaves about 4in. 

 long, the upper ones small, all shining green. Strong plants 

 produce flower-stems lift, high ; these stems bear from six to 

 twelve handsome flowers, which open in slow succession and 

 remain fresh a long time; upper sepal ovate, concave, lin. long, 

 blunt at the apex, pouched at the base ; side sepals spreading, 

 lin. long, jin. wide; petals and lip small, crimson and yellow; 

 sepals large, coloured a beautiful rose, with darker veins. 

 Introduced from South-east Africa in 1SS7. Syn. D. secunda. 

 (B. M., t. 7021.) 



D. secunda (Sw.). — A synonym of D. racemosa. 



D. tripetaloides (N. E. Br.). — Mr. O'Brien, who introduced 

 and flowered this species in 1SS9, says : " It is not only the freest- 

 growing and most profuse-flowering Disa I ever saw, but also 

 the most easily grown of all South African terrestrial Orchids." 

 It has thick, fleshy roots, a stoloniferous stem, lance-shaped 

 leaves, 6in. long, leathery in texture, and arranged in a compact 

 rosette. The flower-stem is erect, i^ft. or more long, and bears 

 from twenty to thirty flowers ; each "flower is about i^in. across, 

 and IS white, tinged with pink and dotted with rose-purple ; the 

 helmet-shaped dorsal sepal has a short spur. The plant remains 

 in flower a long time. Although comparatively new to cultivation, 

 this species was discovered more than a hundred years ago. 

 (B. M., t. 7206.) 



D. uniflora (Bc?-,i(.).—K synonym of B. grandiflura. 



Diores Veitc/iii and i^raiidi flora (\'eitch). 



Diores-'ciio grandijlura and Viitihii l\'ench). 



kdwensis grandifliira and tripctuhndes (KeM'). 



lan<rleyensis racemosa and tripctalnidcs (Veitch). 



Premier tripetaloides and Teitcliii (Kew). 



Veitchii grandiflura and racemosa (Veitch). 



JFatsoiu "ie-u'ciisis and grandijjora (Kew). 



