[From ihe Hui.i.biin of thbTorrey Botanical Club, 37: 215-230,^/s 3J-3-- 19 10 



Sphaerocarpos hians sp, nov., with a revision of the genus and 



illustrations of the species 



Caroline Coventry IIaynes 

 (with plates 25-32) 



While studying a remarkable Spliaerocarpos from the state of 

 Washington , under the direction of Dr. Marshall A. Howe, the 

 writer became gradually acquainted with the other species of this 

 genus of Hepaticae. In the course of this study a considerable 

 amount of material has been available and it has thus been pos- 

 sible to figure and describe all of the known species of Sphaero- 

 carpos. The previous literature relating to the genus, especially 

 the works of Nees von Esenbeck, Professor D. H. Campbell, Dr. 

 Howe, and Professor Charles Douin, has been freely consulted 

 and drawn upon. It is hoped that the information thus brought 

 together and the conclusions drawn from it may be of some service 

 to future students of the genus. For living material I am 

 indebted to Professor C. Massalongo, of Ferrara, Italy, and to Pro- 

 fessor Francis E. Lloyd, of Auburn, Alabama ; freshly collected 

 specimens, also, I owe to the kindness of Professor R. S. Cocks, of 

 New Orleans, Louisiana. Through the courtesy of Monsieur 

 Hariot, I was enabled to examine an authentic specimen of 5. 

 stipitatus from the herbarium of the Museum d'Histoire Naturelle 

 of Paris, our illustrations of this species being drawn from it. I 

 must acknowledge, also, my obligations to Professor Douin, of 

 Chartres, France, for numerous pockets of the two French species 

 in various stages of development ; to Dr. E. Levier, of Florence, 



215 



