32 DIFFERENT STUCTURES OF THE RECEPTACLE. 



The seed has an Arillus*, in Coffea, Jasminum, Cynoglos- 

 sum, Cucumis, Dictamnus, Diosma, Celastrus, and Euony- 



MUS. 



The seeds in repect to Size may be very small, as in Campanu- 

 la, Lobelia, Trachelium, and Ammania ;...or very large, as in 

 Coccus. 



In respect to Situation, they are either nidulantia, nesting, 

 that is, dispersed about the pulp, as in Nymph&a fastened to 

 the suture, as in plants that are siliquose, podded;... fastened to 

 the columella, as in Malva ;...or placed on receptacles, as in Nico- 

 tian a and Datura. 



The Hilum of the seed is evident in Cardiospermum and Sta~ 



PHYL^EA. 



The Corculum is close to the hilum. 



CHAP. XVII. 



OF THE DIFFERENT STRUCTURES OF THE RECEP- 

 TACLE. 



IT is in the class SYNGENESIAf, which contains the compound 

 flowers, that the varieties of the receptacle are principally to be 

 considered. 



In respect to its Figure, it is either plane, flat, as in Achillea; 

 .convex, rounding, as in Matricaria;... or conic, shaped like a 

 cone, as in Anthemis and Melampodium. 



In respect to its Surface, it is either naked, as in Matricaria ; 

 ...punctate, dotted, as in Tragopogon ;...villose, shaggy, as in 



* See Chap. VII. f See Part II. Chap. XXII. 



