2 
a shrub growing by rocky streams, J. M. Dalziel, 1000; Makump, 
120 m., N. W. Thomas, 933 
The genus Oncostemma was described and figured by Schumann in 
Engl. Jahrb. vol. xvii. p. 148, t. vi. fig. R-T. Although the description 
of that genus does not agree with Schumann’s figures, it seems to be 
the one nearest to that described here, which, on account of the erect 
opaque pollinia without pellucid margins, also finds a place in the tribe 
Marsdenieae. 
The nature of this outer corona (“corollinische corona” of Schumann 
in Engler’s Pflanzenfamilien, vol. iv. 2, p. ) in Dalzielia favours 
__ the pollinia in Dalzielia are cylindric-ellipsoid and not subglobose 
like those of Oncostemma. The shape of the pollen-carrier (cor- 
pusculum) is different in the two genera; in our genus it is obtusely 
Sagittate, projects between the two erect pollinia, and is equal to two- 
thirds their length. According to Thomas, D. oblanceolata is known 
in Sierra Leone as Nyinawe.—W. B. Turrtt. 
Fia. 1, flower ; 2, side view of flower ; 3, flower laid open; 4, portion of staminal 
column ; 5, pollinia; 6, gynoecium. All enlarged 
