THE BRYOLOGIST 



Vol. XV July 1912 No. 4 



NOTES ON NORTH AMERICAN HEPATIC.^:. III. 



Alexander W. Evans 



With Plate II 



In the present paper ten species of Hepaticae are considered, four of which 

 are tropical Lejeuneae. The others include two species, Pallavicinia hihernica 

 and Sphenolobus scitulus, which have been more or less misunderstood by writers. 

 Five of the species discussed are accompanied by critical remarks, but the others 

 are introduced to indicate extensions or restrictions of geographical distribu- 

 tion. 



I. Pallavicinia hibernica (Hook.) S. F. Gray. 



Collected in September, 19 11, at Lake Tetachuck, British Columbia, in a 

 boggy meadow, by A. H. Brinkman {No. go), altitude 3400 feet. The preent, 

 species has been cited several times in the literature as a North American plant 

 but most of the records have been based on incorrect determinations and its 

 range is therefore very incompletely known. As long ago as 1838, Nees von 

 Esenbeck, who considered P. hibernica a variety of P. Lyellii (Hook.) S F., 

 Gray, listed specimens from Newfoundland, which had been sent him by Mon- 

 tagne.^ The second record is apparently that of Webber,^ who reported the 



1 Naturg. der europ. Leberm. 3: 347. 1838. 



2 Cat. FL Nebraska 93- 1890. 



Explanation of Plate II 

 Sphenolobus scitulus (TayL) Steph. 

 Fig. I. Part of a stem, dorsal view, X 25. 

 Figs. 2 and 3. Leaves spread out, X 25. 

 Fig. 4. Perichaetial bract, X 25. 

 Fig. s. Gemmae, X 300. 



The figures were all drawn from specimens collected at Tetachuck Lake, British Columbia, 

 by A. H. Brinkman {No. 128). 



Cololejeunea Camilli (Lehm.) Evans 

 Fig. 6. Part of a female plant with a perianth, ventral view, X 50. 

 Fig. 7. Two leaves with well developed lobules, ventral view, X 50. 

 Fig. 8. Three leaves with poorly developed lobules, dorsal view, X 50- 

 Fig. 9. Part of an antheridial branch, ventral view, X 50- 

 Fig. 10. Apex of a leaf lobe, X 225. 

 Fig. II. Apex of a well developed lobule, X 225. 

 Fig. 12. Perichaetial bract with well developed lobule, X 225. 

 Fig. 13. Apex of lobule of bract, X 225. 

 Fig. 14. Gemma, X 300- 



The figures were all drawn from the Jamaican specimens collected by the writer {No. 280), 



The May Bryologist was issued May 13, 1912. 



