484 DR. OTTO STAPF ON 
These two sets of seeds are very different. The seeds of 
Dicellandra Barteri, as represented by Barter's and Dinklage's 
(no. 851) specimens, are obovoid, with an attenuate base and a 
tongue- or horn-like appendage from the upper and posterior 
Fig. 1.—Seed of Dicellandra Barteri. 
end (Pl. 19. figs. 6, 7, and fig. 1 in the text) This appendage 
is part of the raphe which occupies the posterior side down to 
Fig. 2.—Seed of Pheoneuron setosum. 
the base. The raphe is, in the mature state, hollow with delicate 
walls, concave on the back, and more or less dark-coloured. 
The surface of the remainder of the seed is light brown, 
shining, and granular in the upper and anterior part. The 
