— B78 — 

 Mastigolejeunea Lacomblezii, n. sp., Pkars. (Fig. II). 



Dioicum. DinieDsto nicdia, pallo-fuscesccns, corticalis, stratuosujn, Hagelliferum. 



Caulis regulariler-dicholoniis; rami erecti. 



Folia subopposita, densiltr inibricata, convexa, apex incuivatus. honzonlalis (90°) vel 

 palento-divcigenlia (70", semi-ovala, falcala integciiinia, apt x aculus; margioa superiur 

 amplior ad baseni, cxcedcns caulcni; niarnina inferioi plusminusve incurvaia ; ccllula- par- 

 \iv, obloDga', irrtgularitLT, niciiibrana crassa anguli incrassati. Lobus scxits loliis lenuior, 

 oblongo-quadraïus, m parle superiori coniplanatus, in basem paulis pticlaïus, angulus liber 

 acutus. Folia inferiora dense- inibricala, latocuneala, plusniinusve decurrentia, intégra, ron- 

 nunquam relusa, apex reflexa. 



Bracteae : Lobus ovald-lanceolatus, acutus integer; lobulus (eie diniidium lobi, apex 

 rclusus ; bracteolus ellipiicus. 



Pcrianthus (imniaturusi ellipiicus Iriangulalus, angulus posierior acuius. 



Rami çf fere 20 pares bractearuni ; Bracteae dense inibncalic; lotus ovalis; apex roiun- 

 dalus; kibulus '/> magniludinis ovatis, apex relusus. 



Dioicous. Médium size, pale brovvn in colour, corticolous, stratose, flagel- 

 Jiferous. Stem regiilarlv and repeatedly dichotomoiis; branches erect. Leaves 

 subopposite, denscly înibricatc, convex, apex incnrved, horizontal (90°) to 

 patent-divergent (70''), semi-ovale, falcate, cntire, apex acute, antical (ujiper) 

 margin anipliate ncar base, extendin" a little beyond the stem, ponical 

 (loweri margin slightly mcurved; celTs sniall, oblong, irregular iu oulliue, 

 walls tliick, angles thickencd; lobule 6 times smaller, oblong-quadrate, ii]iper 

 portion complanatc, lower slightly swolleu, free angle acute. Underieaves 

 closely imbricate, broadly cuneate, slighlly decurrent, cntire or somelimes 

 retuse, apex reflexed. Bîacts, lobe oval-lanceolate, acute, entire, lobule 

 nearly half the size of'lobe, apex retuse; bracteole elliptic. Perianth (inmia- 

 ture) elliptic, trigonous, postical angle acute. Maie branches with about 20 



Eairs of bracts; bracts closely imbricate, lobe o^al, a]iex rotundatc, kbule 

 alf the size, oval, apex retuse. 



Dimensions : Stems i to i " ;, inches long. 1 mm. diam., with leaves 

 2. mm wide; leaves i 25 mm. x .7 mm., i. mm. x .75 mm., cells .015 mm. 

 X 02 mm. lobule .25 mm. x .15 mm., .2 mm. x .15 mm.; underleaves 

 .5 mm. X .5 mm., .5 mm x .45 mm.; subbract .i mm. X 6 mm., lobule 

 .3 mm. X .1 mm., bract 1.25 nmi. X .5 mm., kbule .6 mm. x .4 mm., 

 i.i mm. X .5 mm., lobule .6 mm. X .4 mm.; bracteole .1 mm. X .5 mm. 



Hab. : Amongst Orchid roots, région of Gombari, Uele, 10-X-16 (M. La- 



COMBLEZ). 



Obs. ; I find no Mastigolejeunea recorded from Africa which agrées with 

 this species. 



Mastigolejeunea florea (Mnx.) St. 



Obs. : Agrées exactly with the original spécimens in Kew. Monoicous, 

 flagelliferous, antical base of leaf covering stem; lobule minute; apex of 

 bracts, lobe acute to acuminate, lobule lanceolate, acuminate; perianths on 

 short latéral branches, trigonous, rostellate. 



Hab. : Chute de la Benga, lez-Lemfu, 2-VI-I9 (R. P. H. Vandekust). 



