178 BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



Spores reticulate B. Texana, 48. 



Spores papillose B. Bolanderi, 46. 



Distinctly papillose . . . . . . B. Donnellii, 48. 



2. Capsule immersed. 



Spores pitted B. Carolina, 8 40. 



Spores reticulate. 



Calyptfa popillose B. Ravenelii, 49. 



Calyptra smooth B. Drummondii, 3 48. 



B. Beyrichiana Mull, is rejected as mixed and uncertain; B. Hamp- 

 eana Mull, is a Chilian species. 



ASTOMUM, p. 51. 



Leaves not crispate when dry. 



Capsule chestnut-brown, ovoid .... A. nitidulum, 52. 

 Capsule orange, oval .... A. nitidulum, var., 52. 



Leaves crispate when dry. 



Capsules often clustered (2-3), oblong oval . A. Ludoviciannm, 52. 

 Capsule solitary. 



Brown globose, capsule immersed ... A. crispum, 51. 



Brown globose, capsule exserted ... A. Drummondii, 41. 

 Orange, sub-globose, immersed . . .A. Sullirantii, 4 52. 



GYMNOSTOMUM, p. 52. 



Lid long remaining attached to columella, capsule thick- 

 walled, with 6-8 rows of transversely elongated cells 



at the mouth G. curvirostre, 53. 



Lid falling early, capsule thin-walled, with 3-4 rows of transversely elon- 

 gated cells at mouth. 



Plants 1-2 mm. high, lid conic G. tenue, 54. 



Plants 5-10 mm. high, lid subulate, costa 2435^ wide 



at base with 2 guides 1 G. calcareum, 5 53. 



Plants 1-7 cm. high, costa IQju wide at base, with 4-6 



guides 6 G. rupestre, 53. 



i Incl. B. brevicollis L. & J. Man. 47. 



*B. Ravenelii mollis L. & J. Man. 49. Fuller description, Appendix no. 40. 

 8 B. brevipes L. & J. Man. 48. B. brevipes Hook, is African. 



4 A. Sullivantii is probably a variety of A. crispum. Most American specimens seem 

 to be referable to A. Sullivantii. (Ren. & Card.) 



6 As far as can be determined G. platyphyllum Kindb. (Appendix no. 44) falls here. 

 6 See explanation under Dicranum, p. 181. 



