— B98 — 



margin extonding to the iniddlc of the sloni, slighlly decurrent, undulate, 

 reciirved, entire or witli one or two distant teeth; cells smallisli, 4, 5 and 

 6 sided, quadrate; walls firm, no trigones or thickened angles. L'nderleaves 

 nnnierous, lanceolate, simple or irregularly bilid. Bracts smaller than the 

 leaves, rotund, irrcgularly dentale. Periaiuh projecting about half l)eyond 

 the bracts, cylindrical, ovatc, winged, wing broad, long, denlate; moiith 

 coarsely dentato. Maie bracts terminal, 5 pairs, lobe oval, entire, lobule 

 smaller, oval, entire. 



Dimensions : Stems i to 2 inches long; .2 mm. diam. ; wilh leaves 2.5 mm. 

 wide, leaves i 75 mm x i. mm., 1.25 mm. x 75 mm., brancli leaves 

 .8 mm. X .5 mm : cells .025 mm.; underleaves .3 mm. x .15 mm.; underleaf 

 near perianth .35 mm x 25 mm.; bracts 1.5 mm x 1.25 mm.; periantii 

 2.5 mm. x 1.25 mm.; perigonial bract. lobe .35 mm. x .2 mm., lobule 

 .275 mm. X .175 mm.. 



Hab : Temvo (Mayombe). lo-II-iç (D' C. Vermoesen). 



Obs. : This is a very curions sjiecies; the leaves although soniowhat thick 

 in texture crumbleaway, Icaving them very deformed, they do not fall oft as 

 in Plagiochila trideniiculata, Tayl., or Frullania fragiafoUa, Tavi, , 

 underleaves are everywhere preseut, perianth cylindrical, slightly flattened 

 near the apex. 



The texture, présence of underleaves and shape of perianth remove it from 

 the usual type of/'/a^/ocAz'/rt. 



P. heterostipa, St., has much longer leaves, antical margin only slightly 

 decurrent, more deutate, large trigones, wing of perianth entire. 



/-". itndicaulis. St., has leaves 3. mm. long, almost twice as long as broad, 

 hardi}- decurrent, narrow base, small trigones, minute underleaves, maie 

 bracts acute, denticulate. 



Aneura congoana. St. 



Hab. : Between Kisala and Lundu (Ma5'ombe) (D' Poma). 



Metzgeria conjugata LinoB. 



Hab. : Between Kisala and Lundu (Mayombe) (D' Poma). 



Obs. : This is the only monoicous Metzgeria recorded from Africa; the 

 spécimens agrée in every particular except that the wings are sometimes 

 more or less pilose. 



Fronds recurved, costa and margins pilose, cross-section of costa show 

 2 to 3 antical and 3 to 4 postical cortical cells; calyptra hairy. 



