198 



BULLETIN OF THE UNIVEESITY OP WISCONSIN. 



§11. Gasterogrimmia. 



Periatome wanting, lamina bistratose near apex 

 Peristome present, lamina unistratose throughout 



. 6. anodon, 138. 

 G. plagiopoda, 138. 



§111. Eugrimmia. 



Capsule costate when dry. 

 Leaves homomallous-falcate when dry . . . Q. hamnlosa, 139. 

 Leaves spirally twisted on stem when dry . . G. torqnata, 140. 

 Leaves incurved-cirrhate when dry . . . . G. contorta, 139, 

 Leaves imbricate or slightly twisted when dry, hair pointed. 

 Lamina of one layer of cells . . . .6. pachyphylla, 181, 

 Lamina 2-4-stratose in the upper part or at the margin. 



Hair point rough G. Mohlenbeckii, 140, 



Hair point smooth. 

 Annulus simple, monoicous . . . G, pulvinata, 138. 



Annulus compound (3-4), dioicous. 

 Costa narrow, capsule 8-3triate or costate. 



Lid short G. fanalis, 179. 



Lid long, straight . . . , G, triehophylla, 141. 



Costa strong, capsule 10-striate . . G. elatior, 17S. 



Capsule not costate (or obscurely) when dry. 



Leaves falcate-reflexed when moist ... G. Watsoni, 141. 



Leaves not reflexed. 



Margin plane, capsule elUptic, collum none G. OIneyl, 142. 



[G. MuhlenbecJeii may be sought here.] 



Margin reflexed. 

 Leaves gemmiferous, capsule oval-oblong. 

 Teeth papillose, leaf cells at base scarcely 



sinuous G, Philbertiana, 171. 



Teeth smooth, leaf cells at base strongly 



sinuous G, Hartmanii, 174. 



Leaves not gemmiferous. 

 Open, erect, lanceolate ... G. Californica, 142, 

 Arcuate, ovate-lanceolate G. depilata, 175. 



Only incomplete descriptions of the following species can be obtained 

 and they are therefore not included in the key: GO. arcuatifoUa Kindb., 

 Arizonce Ren. & Card., prolifera C. M. & Kindb., tortifolia Kindb., and 

 Hendersonii Ren. & Card. See descriptions in Appendix, nos. 173, 176, 

 177, 178, 180. 



