erect concave subgaleate rhomboid-cuneate in outline, dorsally 

 saccate below the middle ; petals erect oblong, incurved at the 

 apex and dentate, lobed in front, 0*9 cm. long ; lip spreading- 

 deflexed, linear acute, about as long as the petals ; rostellum erect 

 Slobed, gland-bearing lobes incurved, so that the glands are 

 opposite, furnished posticously with a petaloid appendage, inter- 

 mediate lobe obtuse concave ; anther erect. 



Described from several living and dried specimens. 



Opinions have differed as to whether this species is sufficiently 

 distinct from D. racemosa (see the previous figure). I think it is, 

 but I admit that there is room for difference of opinion and I 

 cannot plead that such difference is due in this case (as it so often 

 is) to the fact that some of those who diflfer have not seen the 

 plant in its living state, since my friend, Dr. Schlechter, than 

 whom I know of no more competent judge, regards it {Monogr. der 

 Disece. Engl. Bot. Jahrb.. xxxi., 227) as a mere var. of D. race- 

 mosa L.f. I would urge, however, that the difference in the shape 

 of the odd sepal, in the relative position of the glands of the 

 pollinia (those of D. venosa facing each other, while those of 

 D. racemosa are in the usual position facing the front of the flower), 

 taken in conjunction with the greater robustness of D. racemosa^ 

 constitute strong arguments for the maintenance of this species. 



