Teschemacher^ s New Rafflesia. 65 



processes on the disc, and that part of the tube of the perianth 

 opposite to these openings is studded with thick, capillary hairs, 

 each terminated by what is apparently a glandular knob. 



Down the centre of the column are lines, evidently bundles 

 of vascular tissue, which pass through the substance of the 

 cup into the root of the cissus ; all the rest of the interior is 

 cellular. 



I could not perceive any very distinct appearance, in the 

 bud, of an annular process at the mouth of the tube of the 

 perianth, although it is not improbable, from various marks, 

 that such a ring may be developed when the flower is open. 



Ther(3 is no appearance, in any of these three specimens, 

 of the cavities exhibited in the figure of R. Patma, which 

 contain the spores ; on this part of the structure of Rafflesia, 

 therefore, these specimens from Manilla do not throw any far- 

 ther light. They are probably male flowers. Of R. Hors- 

 fieldii, which, when expanded, is only three inches diameter, 

 I have not seen any description. 



I close this paper with the following comparisons of the 

 two species described, and of that which I call, at present, R. 

 Manillana. 



R. Arnoldi. Bud, before expansion, one foot diameter, sessile 

 on root of Cissus angustifoUa^ the under side of its base reticulate ; 

 disc of column convex, processes on surface forty to sixty, close 

 together, divided at the summits, which are hispid ; anthers forty to 

 sixty, with numerous celts, and furnished with pores at summits ; 

 a moniliform cord at base of column ; interior of perianth covered 

 with variously formed tubercles. 



R. Patma. When expanded, two feet diameter, arising directly 

 from the root of the Cissus ; disc of column concave, processes on 

 surface of disc numerous, of a pyramidal form, the summits of which 

 are entire and hispid ; lower part of tube of perianth and column glab- 

 rous, interior of perianth covered with variously formed tubercles ; 

 anthers with cells and pores ; number not mentioned ; no moniliform 

 cord at base of column ; antheriferous flower containing cavities 

 filled with spores, hence hermaphrodite. 



R. Manillana. Bud, before expansion, two and one half inches 

 diameter, arising from a cup three-fourths of an inch high, formed 

 by the thickened bark of the root of the Cissus ; the bracteoe origi- 



9 



