Manchester Memoirs, Vol. Ixv. (1921), No. 1 5 



Hab. — Tarkwa, Prestea District, Gold Coast, 191 1, H. H. 

 Saxby, and on ebonv logs from the Cameroons, Liverpool 

 Docks, H. G. Travis, Feb. 1920. 



Observations. — In addition to the few stems of this species 

 detected in the hepatics forwarded to me by Mr. Travis from 

 the Cameroons, I have received from Mr. Wm. Ed. Nicholson, 

 of Lewes, a packet of the same species collected on the Gold 

 Coast, West Africa, by Mr. H. H. Saxby, in which there were 

 very fine and perfect stems, and I have pleasure in naming 

 the species after this gentleman, who has made a very inter- 

 esting collection of Hepatics in West Africa. 



Stephani in his " Sp. Hep." (4) describes a number of 

 Ceratolej. from the West Coast of Africa, but to none of them 

 can be referred C. Saxbyi according to his descriptions. 



C. calabariensis, St., has obtuse leaves, with large lobules, 

 underleaves 5 times broader than the stem, and divided to the 

 middle. 



C. diver sic or nua, St., leaves minutely denticulate, lobule 

 large, oblong. 



C. florabunda, St., leaves ovate, apex acute, near apex 

 paucidentate ; underleaves elliptic, bilobed to the middle, lobes 

 lanceolate, obtuse ; bracts lanceolate, acute. 



C. umbonata, St., leaves acute, apex with few teeth, no 

 ocelli, underleaves gigantic, equal in size to the leaves, deeply 

 cordate, bracts apiculate. 



C. Zenkeri, St., leaves ovate, apex obtuse, underleaves five 

 times broader than the stem, divided to the middle ; bracts 

 small, half the size of perianth, margin entire, bracteole 

 divided to the middle. 



Lejeunea acuta, Mitt., Jour. Linn. Soc, Vol. 7-8, p. 167 

 (1864), from the Cameroons, which Mitten notes as similar to 

 L. cerina, L. et L. (a Cerato lejeunea) is listed by Stephani (5) 

 as a Taxilejeunea, and described as dioicous. 



Description of Plate II. Fig. 1. Plants nat. size. Fig. 2. 

 Portion of stem, antical view, x 24. Fig. 3. Ditto, postical 

 view, x 50. Figs. 4, 5. Lobules of leaves x 50. Figs. 6-8. 

 Leaves x 50. Fig. 9. Portion of leaf, showing ocellum x 290. 

 Fig. 10. Ditto, near margin x 290. Fig. 11. Underleaves 

 x 50. Fig. 12. Bract x 50. Fig. 13. Bracteole x 50. Fig. 

 14. Perianth x 50. Fig. 15. Portion of stem with amentulum 

 x 50. 



