COSMARIUM. 131 



** Cells 1^ times longer than broad, or more. 



t Margin of semicells crenate ; crenations usually finely 



granulate. 

 J Marginal crenations numerous. 



209. C. pulcherrimv m . 



210. C. binum. 



211. C. speciosum. 



212. C. subspeciosum. 



213. C. speciosissimuiH . 



++ Marginal crenations few (not more than 12 in each 



semicell) . 

 Cells hexagonal in outline. 



a Semicells with 6 well-marked crenations. 



214. C. subalatum. 



/3 Semicells with about 12 crenations. 



215. C. liexalobum. 



Cells elliptical, with subtruncate apices ; semi- 

 cells with about 8 crenations. 



216. C. nasutum. 

 ft Margin of semicells undulate ; granules small. 



+ Constriction deep, sinus linear. 



217. C. eductum. 



218. C. didyinocliondrum. 



219. C. subnotabile. 

 %% Constriction not deep, sinus open. 



220. C. tumens. 

 ttt Margin of semicells entire. 



% G-ranules more or less restricted in their distribution 



on the semicells. 



Cells small ; semicells with retuse lateral 

 margins ; granules few and very re- 

 stricted. 



221. C. retusum. 



Cells very large; granules large and conical, 

 confined to the marginal region. 



222. C. ovale. 



%% Granules rounded and more or less uniformly dis- 

 tributed over the semicells. 

 Vertical view not tumid. 



223. C. Scoticum. 



224. C. tetraoplitlialmvm. 



225. C. Botrytis. 



226. C. Gayanum. 

 Vertical view tumid. 



227. C. controversial/. 

 Granules flattened, somewhat irregular in outline, 



and often subdivided. 



228. C. ochthodes. 



