44 Wisconsin Academy of Sciences , Arts and Letters. 
§ IV. Eugrimmia. 
•Capsule costate when dry. 
Leaves homomallous-falcate when dry . . . G. hamulosa, 12. 
Leaves spirally twisted on stem when dry 
G. torquata, 18. 
Leaves incurved-cirrhate when dry G. contorta, 11. 
Leaves imbricate or slightly twisted when dry. 
Hair point rough, capsule obscurely costate . G. Mulilenbeckii, 14. 
Hair point smooth, capsule strongly costate. 
Laxly pulvinate-cespitose, dioicous , . G. trichophylla, 16. 
Densely pulvinate, monoicous . . . . G. pulyinata, 10. 
Capsule not cos bate (or obscurely) when dry. 
Leaves falcate-reflexed when moist G. Watsoni,15. 
Leaves not reflexed. 
Margins plane, capsule elliptic, collum 0 . . G. Olneyi, 17. 
[G. Mulilenbeckii may be sought here]. 
Margins reflexed. 
Capsule subpyriform, collum distinct, leaves not 
gemmiferous 
G. Californica, 18. 
Capsule oval-oblong, upper leaves gemmiferous G. Hartmani, Sch. 1 
A sterile species, Gvimmia arcuatifolia, probably belonging to this section 
has been described by Kindberg in Bull. Torr. Bot. Club, xvi (1889), 93. 
It resembles G. Watsoni in the reflexed leaves. 
Lamina above 2-4-stratose. 
Calyptra cucullate. 
Leaves hair pointed ...... G. cominutata, 25. 
Leaves not hair pointed, rather blunt . . . G. imicolor, 28. 
Calyptra mitrate. 
Leaf margins plane.. G. leucophsea, 22. 
Leaf margins recurved. 
Walls of basal cells sinuate . . . G. Pennsylvania, 22. 
Walls of basal cells smooth.G. ovata, 21. 
Only the margin 2—4-stratose. 
Leaves muticous or hyaline, apiculate . . G. Coloradensis, 20. 
Leaves hair pointed. 
Annulus 0. 
Calyptra mitrate, covering whole capsule . G. calyptrata, 23. 
Calyptra cucullate. G. montana, 26. 
1 Mrs. E. G. Britton, Bull. Torr. Bot. Club , xvi (1889), 340. 
