156 THE JOURNAL OF BOTANY 



species of the genus in the papillose leaves ; from L. A^istinii 

 ('Sull.) in the narrower, more finely acuminate leaves with more 

 acutely papillose cells, short seta, and different structure of the 

 peristome teeth. Leskea ahhreviata Schp. from Abyssinia, while 

 extremely close in habit and fruiting characters, has the wider, 

 less gradually and longly tapering leaves of L. Austinii, and the 

 cells very shortly, often quite obscurely, papillose. 



Explanation of Plate 517. 



Fig. 1. Pogonatwn papillosulum. a, leaf, x 10. &, back of nerve, x 100. 

 c, lamellge in section, x 200. 



Fig. 2. Forsstroemia inclusa. a. leaf, x 20. b, perichffitium, partially 

 opened, x 12. c, calyptra, x 20. 



Fig. 3. Bryosedgioickia Kirtikarii. a, stem, nat. size. 6, stem leaf, x 20. 

 c, branch leaf, x 20. d, apex of stem leaf, x 50. e, apex of branch leaf, x 50. 

 /, peristome, x 100. 



Fig. 4. Finnatella calcutensis. a, part of fruiting stem, nat. size. 



Fig. 5. Lindbergia longinervis. a, plant, nat. size, b, leaf, x 20. 

 c, upper cells, x 200. d, basal marginal cells, x 200. e, peristome, x 100 

 (from left to right, profile, dorsal, and ventral view). /, peristome tooth, dorsal 

 view, X 200. g, papillre at back of leaf, x 200. 



A EEVISION OF THE GENUS BEBTIEBA. 



By H. F. Wernham, B.Sc. 



(Continued from p. 117.) 



DIVABICAT^, sect. nov. Inflorescentia ramorum sub- 

 sequantium dichotomorum divaricatorum composita. 



1. B. Dewevrei de Wild, in Ann. Mus. Congo, iii. i. 113 (1901). 

 Hab. Congo, near Stanleyville : Deiuevre, 11676. 



A somewhat isolated species, comparable, according to the 

 authors, only with B. hreviflora ; we have associated the two on 

 the ground of the inflorescence character. According to the 

 description this species is distinctive in the large size of the 

 stipules and the truncate glabrous calyx, with limb entire. 



2. B. breviflora Hiern, in Oliver. Fl. Trop. Afr. iii. 85 (1877). 

 Hab. Eppah: Barter, 3292! Gaboon Eiver : Mann, 923! 



Batanga : Bates, 180 ! 305 ! Sierra Leone : Scott Elliot, 4646 ! 

 4939 ! Oban, S. Nigeria : Talhot, 209 I Ashanti : Cummins, 124 ! 

 Lagos : Boivland ! Kamerun : Preuss, 324 ! 1132 ! Budatis, 91 1 

 Hbb. Mus. Brit, and Kew. 



LAXM, sect. nov. Inflorescentia rachide mediana plus minus 

 bene distincta ramis lateralibus cymorum laxiusculorum compositis. 



3. B. LAXissiMA K. Sch. in Engl. Bot. Jahrb. xxxiii. 348 (1904). 

 Hab. Kamerun : Zenker, 1425 ! Hbb. Mus. Brit, and Kew. 

 The floral pedicels, in many cases measuring over 2 mm., are 



noticeable in this species, as well as the rather ill-defined, sinuous 

 main rachis of the inflorescence. (See fig. 2 and introduction, supra) . 



4. B. Batesii, sp. nov. Inflorescentia laxa thyrsoidea rachide 



