Gradstein, S.R. <br/><br/>
A taxonomic monograph of the genus Acrolejeunea (Hepaticae) :  with an arrangement of the genera of Ptychanthoideae / 
by S. R. Gradstein. 
 - Vaduz :  J. Cramer,  1975. 
 - 162 p. :  il. ;  23 cm. 
 - Bryophytorum bibliotheca ;  Bd. 4 .
<br/><br/>Thesis (Ph.D.) - Rijksuniversiteit te Utrecht. 
<br/><br/>Bibliography: p. 152-159. 
<br/><br/><br/>Ingles 
<br/><br/><label>ISBN: </label>3768209687 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Acrolejeunea.<br/>Lejeuneaceae.
<br/><br/><label>Dewey Class. No.: </label>588.3