THE BRYOPHYTA OF THE 

 ALLAN HANCOCK EXPEDITION OF 1939 



By WILLIAM CAMPBELL STEERE 



The collection of bryophytes brought back by the Allan Hancock 

 Expedition of 1939 is much smaller than that resulting from the 1934 

 Expedition, 1 and contains no species new to science. However, since Dr. 

 Wm. Randolph Taylor and Mr. Francis H. Elmore collected the speci- 

 mens in areas little known by botanists, such as the west coast of Costa 

 Rica and Panama, and Socorro Island of the Revillagigedo group 

 (Mexico), it seems worth while to report on them. 



The five species of Hepaticae listed below were identified by Dr. 

 Margaret Fulford of the University of Cincinnati, and I wish to acknowl- 

 edge here my obligation to her. All specimens are deposited in the her- 

 baria of the Allan Hancock Foundation, The University of Southern 

 California, and the University of Michigan, and a set of the Hepaticae 

 are in the possession of Dr. Fulford. 



HEPATICAE 



Lejeuneaceae 



Brachiolejeunea corticalis (Lehm. & Lindenb.) Schiflfn., 

 Hedwigia 33:180. 1894. 



Costa Rica (West Coast) : On a large smooth-barked tree in forest, 

 Golfo Duke; 26 March 1939; IV. R. Taylor No. 39-754. 



Distribution: Florida; West Indies; Central America; northern 

 South America. 



Caudalejeunea Lehmanniana (Gottsche) Evans, Bull. Torrey 

 Bot. Club 34:554. 1907. 



Costa Rica (West Coast) : On twigs in the forest, Golfo Dulce; 

 26 March 1939; W. R. Taylor No. 39-753. 



Distribution: Florida; West Indies; Central America; northern 

 South America. 



Rectolejeunea Berteroana (Gottsche) Evans, Bull. Torrey Bot. 

 Club 33: 12. 1906. 



1 Steere, Mosses of the G. Allan Hancock Expedition of 1934, collected by Wm. 

 R. Taylor. Hancock Pacific Expeditions 3(1) : 1-12. 1 pi. 1936. 



C 1 ] 



