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NOTES ON NORTH AMERICAN HEPATICAE. I. 
Alexander W. Evans. 
The specimens of Hepaticae sent to the writer for determination often 
include species of more than ordinary interest. So far as these belong to the 
New England flora attention is called to them in a series of “ Notes on New 
England Hepaticae,” published in the recent volumes of Rhodora. In the • 
present series of notes it is proposed to take up species from other parts of 
North America. In some cases the species to be considered will be well 
known to American students but will be included because the specimens 
quoted increase our knowledge of their geographical distribution. In other 
cases more critical species will be discussed. Schiffner’s arrangement of the 
Hepaticae in Engler & Prantl’s “ Die Natiirlichen Pflanzenfamilien ’’ will be 
followed. 
1. Riccia dictyospora M. a. Howe, Bull. Torrey Club 28 : 163. 1901. 
Collected in July, 1907, at Glencoe, Missouri, by N. L. T. Nelson (No. 
iSgj). This is the second known station for the species. The type locality is 
Athens, Georgia, where it was discovered by R. M. Harper in 1900. 
2. Marchantia disjuncta Sulliv. Mem. Amer. Acad. N. S. 3 : 62. pL 3. 
1846. 
Collected in June, 1909, at Etowah, Tennessee, on the sides of a narrow 
lateral ravine, by Miss Florence McCormick, and communicated by Professor 
C. R. Barnes. Since the original discovery of this species at Clairborne, 
Alabama, by W. S. Sullivant, in 1845, it has been recorded from Arkansas, 
Texas, Mexico, Cuba, Jamaica, and Guadeloupe. 
3. Pallavicinia Blyttii (Moerck) Lindb. 
Collected in May, 1909, at Ucluclet, British Columbia, by J. Macoun 
(No. 80). This is the third station for North America. The first two 
stations, both in the state of Washington, were recently recorded by Miss 
Clark. 1 The species is widely distributed in Europe. 
4. Ju.NGERMANNiA Allenii L. Clark, Bull. Torrey Club 36; 303. pi. 20. J. 
/-//. 1909. 
Collected in June, 1909, at Ucluclet, British Columbia, by J. Macoun 
(No. 104). The type locality for the species is Mount Ranier, Washington, 
where it was discovered in 1900 by O. D. Allen. It has since been collected 
in the same region by J. B. Flett and A. S. Foster. All of the specimens so 
far known are incomplete, so that the true generic position of the plant 
cannot yet be established. 
1. Bull. Torrey Club 36: 301. 1909. 
