Manchester Memoirs, Vol. Ixv. (192 1), No. 1 



I. Notes on a Collection of Hepatics from the Cameroons, 



West Coast of Africa. 



By William Henry Pearson, M.Sc, A.L.S. 



(Received and read November 2nd, 1920.) 



I received this small collection some time ago from Mr. W. 

 G. Travis, who wrote : " These Hepatics grew in small 

 quantity among mosses, on logs of ebony, imported into 

 Liverpool from the Cameroons, the port of shipment being 

 Duala. The bark is removed from these ebony logs, and 

 evidently the wood has been lying out in the open somewhere, 

 no doubt awaiting shipment, during the war, and this has 

 given a chance for the hepatics, evidently terricolous species, 

 to develop on earth in hollows in the wood." 



Two papers have been written by Mitten (1) on the 

 Hepatics of the Cameroons and the West Coast of Africa, 

 and a considerable number of species has been recorded 

 from there by Stephani (2). 



The following is a list of species I have found in the 

 Collection. Type specimens of this Collection are in the 

 Manchester Museum. The terms used to define the size of 

 plant and cell are those proposed by Dr. Spruce. 



Aneura Travis i ana, n.sp. Pearson. 



Dioicous. Small, pale yellow colour, intricately caespitose. 

 Stems irregularly sub-pinnate ; trunk narrowly winged, wings 

 1 to 2 cells wide ; on cross-section plano-convex, 4 cells thick 

 at the middle, outer cells small, the two inner large ; branch 

 midrib 4 to 6 cells wide, cells moderate to rather large in size, 

 oblong-quadrate, wings 3 to 4 cells wide, same size as those 

 of the mid-rib only quadrate ; branchlets often digitate (three 

 lobes), attenuate, thin. Bracts at the base of calyptra ovate- 

 acuminate. Calyptra cylindrical, oblong-clavate, smooth. 

 Amentula slender, narrow, alveoles in two rows, 5-10 pairs, 

 denticulate. 



March 31st, 1921. 



