198 BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



11. Gasterogrimmia. 



Peristome wanting, lamina bistratose near apex . . G. anodon, 138. 

 Peristome present, lamina unistratose throughout G. plagiopoda, 138. 



111. Eugrimmia. 



Capsule costate when dry. 



Leaves homomallous-falcate when dry . . . G. hanmlosa, 139. 

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

 Leaves incurved-cirrhate when dry . . . . G. contort*, 139. 

 Leaves imbricate or slightly twisted when dry, hair pointed. 

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

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



Hair point rough G. Muhlenbeckii, 140. 



Hair point smooth. 



Annulus simple, monoicous G. pulrinata, 138. 



Annulus compound (3-4), dioicous. 

 Costa narrow, capsule 8-striate or costate. 



Lid short G. funalis, 179. 



Lid long, straight . . . . G. trichophylla, 141. 

 Costa strong, capsule 10-striate . . G. elatior, 172. 



Capsule not costate (or obscurely) when dry. 



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



Leaves not reflexed. 

 Margin plane, capsule elliptic, collum none . G. Olneyi, 142. 



[G. MuhlenbecMi 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. arcuatifolia Kindb., 

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

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

 177, 178, 180. 



