together with the widely conical very obtuse spur 1 cm. long ; 

 petals bidden under the galea, nearly erect, falcate-oblong obtuse 

 incurved and overarching the column ; lip varying from oblong 

 to lanceolate, obtuse spreading, about 4 mill, long; rostellum 

 nearly erect, ovate, with short arms ; stigma cushion-shaped, 3 

 lobed ; ovary cylindrical, 1*5 cm. long. 



Described from numerous living specimens. Flowers deep but 

 bright golden yellow. I was long familiar with this wide-spread 

 species in its usual colour (rosy pink, often with carmine spots) ; 

 but it is so unusual for Cape Orchids to vary from such a colour 

 into yellow that when I first found this I could hardly suppose 

 it to be the same species. Yet it is undoubtedly so. The species 

 varies somewhat in the length of the spur, those of the present 

 form being amongst the shortest ; but I have found equally short 

 spurs amongst the red-flowered form. To quote Burchell's 

 number is, I must confess, something of an assumption. His 

 specimens exactly resemble mine, and were collected in the same 

 locality 15 years earlier. But of the colour he says nothing in 

 his diary, and the specimens afford no indication ; we may only 

 conjecture they were yellow. The pink-fl. form is in cultivation 

 in England, and I saw a fine specimen at Kew in 1891, which 

 was figured in the Bot. Mag. t. 7206, and which was more 

 luxuriant than I have seen it in its wild state. The nearest con- 

 gener of the species is D. caulescens, Linclley, represented in our 

 next plate ; with D. venosa, Sicartz, for which Lindley mistook 

 it, it has very little affinity. Lindley placed these species in the 

 section Coryphaea ; to which indeed they have some resemblance. 

 But I think their prominent rostellum,— a character not very 

 obvious in dried specimens, together with some other features, 

 point them out rather as members of the Eu-disa group. 



