B 90 — 



Microlejeunea africana. St. 



Obs. : I picked ont a few stems of this minute and l)eautiful species growing 

 on Frullaïua ; tlicy agice well witli Stki'HAM's description. « Leaves erect, 

 ])arallel willi tlie stems, hroadly ovate. 3 nmi. x .2 mm., apex bioadly 



lobule large, free angle with long 

 tootli, underleaves sniail, ovate ». Keel ol lobule smooth, underleaves bifia 



rotundate, cells .018 lî.m., no trigones, lobule large, free angle with lonj 

 tootli, uiuierleaves sniail, 

 to tlie niiddle or nearlv so. 



Hab. : Amongst orchid roots, région o( Gonibari, Uele. 10-X-16 

 (M. Lacomblez). 



Radula epiphylla, Mirx. (Fig. VIII). 



Dioicous. Small; pale brovvn in colour; epiphylloiis. Stem irregularly bipin- 

 nate. Leaves approxiniate, altcrnatc, horizontal (90") to patent-di\ergent 

 (70°), oblong-oval, antical (iipper) niargin ampliate, covering or extending a 

 little beyoud the stem; cells .-mail, quadrate, trigones absent or very 

 indistinct; lobule 3 to 4 tinies smaller, irregular in shape, quadrate or rhom- 

 boidal, free angle acute or obtusate, inner margin extending to the near side 

 or middle of the stem. Inflorescence on short latéral branches, with an 

 innovant branch on both sides; bracts small, halfthe size of the leaves, erect, 

 lobe oval, lobule smaller, ovate-quadrate. Perianth trumpet-shaped, mouth 

 wide, entire, uueven, straight uot recurved. Amentula long, 12-20 pairs of 

 bracts, closcly imbricate, erect, lobes oval, apex obtuse or rotundate, lobule 

 smaller, apex obtuse. Gemmae abundant, orbicular or reniform. 



Dimensions: Stem ' ... inch long; .075 mm. diam.; with leaves .1 mm. wide; 

 leaves .75 mm. x .5 mm. lobule .2 mm. x .15 mm., .2 mm. x .175 mm., 

 .15 mm. x .2 mm.; cells .02 mm.; bracts, lobe .4 mm. x .2 mm., lobule 

 .25 mm. X .175 mm.; perianth .2 mm. long x .5 mm. wide at the mouth; 

 perigonial bract. lobe .4 mm. x .3 mm., lobule .3 mm. x .2 mm. 



Hab. : Temvo (Mayombe). 10-II-19. D' C. Vermoesen. 



Obs. : I hâve not had the opportunity of examining Mitten's original 

 spécimens of this species, but a spécimen from the Kew Herbarium collected 

 by Zenker from the Comeroons, named by Stei'Hani, with which my 

 spécimen exactly agrées, but not with the measurements given by 

 Stephani; probablv he met with some other larger forms of this species. 



Chiloscyphus dubius, Gottsche. 



(C. oblongifolius, Mrrr. non Taylor). 



Hab. : Temvo (Mayombe), 10-2-19 (D' C. Vermoesen). Between-Kisala 

 and Lundu (Mayombe) (D' Poma). 



