[Reprinted from The Bbyoloqist, Vol. XX, No. 4, July 1917] 



PRELIMINARY LIST OF ARIZONA HEPATICAEi 



Alexander W. Evans 



Very few species of Hepaticae have been reported from Arizona. The 

 first records for the state were made in 1895 by Underwood,- who noted the 

 occurrence of Marchantia polymorpha and Reboulia hemisphaerica, without citing 

 definite stations. Four additional species have since been reported by the writer, 

 as follows: Plagiochasma rupestre and P. Wrightii, in 1915;^ Frtdlania mexicana, 

 also in 1915;* and Marchantia paleacea, in 1917. ^ Of these six species, Marchantia 

 paleacea, although not endemic to Arizona, is known from no other stations in 

 the United States. 



The following list is based largely on the collections made by G. E. Nichols, 

 while participating in the International Phytogeographic Excursion in America. 

 This has been supplemented by the material in the herbarium of the New York 

 Botanical Garden and by specimens kindly communicated by W. A. Cannon, 

 D. S. Johnson, F. Shreve, and J. J. Thornber. Although future collections will 

 undoubtedly lengthen the list appreciably, it is hardly to be expected that many 

 conspicuous species remain to be discovered. 



1. RicciA GLAUCA L. Bear Canyon, Santa Catalina Mountains, 1913, 

 G. E. Nichols. 



2. RicciA SOROCARPA Bisch. Cherry Creek, Santa Catalina Mountains, 

 1913, G. E. Nichols; summit of Mt. Lemmon. Santa Catalina Mountains, F. 

 Shreve. 



3. RicciELLA FLUITANS (L.) A. Br. Soldier Canyon, Santa Catalina Moun- 

 tains, 1913, G. E. Nichols; Sabino Canyon, Santa Catalina Mountains, F. Shreve. 



4. Targionia hypophylla L. Bright Angel Trail, bottom of Grand Can- 

 yon, 19 13, G. E. Nichols; Sabino Canyon, Santa Catalina Mountains, /. /. Thorn- 

 ber; Miller Canyon, Huachuca Mountains, F. Shreve. 



> Contribution from the Osborn Botanical Laboratory. 



' Bot. Gaz. 30: 69, 70. 189S. 



« Bull. Torrey Club 43: 279, 29s. IQIS- 



« Bryologist 18: 88. 1915- 



* Trans. Connecticut Acad. 31: 234- 1917- 



