— 163 — 



■erectly parce et fasciculatim rmnosi. Folia linearla^ conferta^ rigida^ 

 siccitate adpressa, madore erecto-patentia {min. 7,2 ir^ 0,6" òasi) e 

 basi decurrenti, in lamina'ìn multo longiorem protracta: costa òasi 

 latissima [mm. 0,35), totani laminam, late canaliculatam, occupante, 

 apice sinuolato-denticulafa. Alae mediocres, cellulis hyalinis pluvi- 

 seriatis, seats costam rectangulai'ibiis ([j.. 60-70 ^ 13-15), marginem- 

 versus linearihus (i-i. 90-100 ^r^ 3-4) limbum pellucidum effbrman- 

 tihus, infimis paucis vesiculoso-quadrilateris {50-1 7) interdwm fuscis, 

 quasi auriculas {non salientes) efficientihus. Cetera desunt. 



Hab. in M. Ruwenzori (Africa centralis) in valle Lacuum ca. 

 4000 m. ad radices Montium Baker et Stanley, id. ad rupes M, 

 Duwoni. 



Fissides mobukensis n. sp. 



Sterilis: coespites sporadice diffusi: cauliculi htimillimi, 1-3 mm. 

 alti, simplices, substrato adpressi. Folia siccitate incurvato- cris pula, 

 madore plana, 6-8 juga {mm. 0,4-0,5 ii 0,15) superne confertiora, 

 ovato lanceolata, apicem versus 5-6 denticulis obttisis pr aedita, mi- 

 nute apiculata. Umbo tenuissimo distincfe ante apicem interrupto, 

 costa crassa (p.. 1 7) flexuosa, pellucida, sub apiculo evanida. Cellulae 

 laminares guadratae (pi. 5-6^), cMoropyllosae : 7narginales elongatae, 

 hyalinae, uniseriatae. Cetera desunt. 



Hab. in M. Ruwenzori, in rupem inter Ibanda et Bihunga 

 m. 2000 ca. 



Leptodontium Gambaragarae (1) n. sp. 



Sterile : laxe coespitosum, sordide lutescenti-oUvaceo. Cauliculi gra- 

 ciles, valde elongati {cent. 15-18), geniculate ascendentes, flexuosi, sim- 

 plices seu vage ramosi, inferne hinc illinc radiculosi, interdum to- 

 rmento propagulifero praediti. Folia caulina uniformia, innovationum 

 tantum teneriora, e basi adpressa semiamplexicauli {mm. 1,7-1,4^ 

 0,7-0,6 basi) plana, superius dilatata, margine stride revoluta'; in la- 

 minam lanceolatam, acutam {mm. 2,2-2,9 longam) carinato-concavam 

 protractam, siccitate erecto crispula?n, madore raptim sguarrosam, mar- 

 gine inferne stride revoluto, superne plano et usque ad apicem dentibus 

 crebris, par vis, acutis, hyalinis, unicellular ibus serrato: costa {basi 

 p.. 58-60) inferne ferrugineo-pallida, superne viridula, apicem attin- 

 gente. Cellulae basilares infimae sporadicae, aurantiacae, laeves, hya- 

 linae, rectangulares elongatae {{i.. 50 cri 6); ceterae, basis et laminae, 

 papillis hyalinis instructae, basis vero rhombeo-lineares flexuosae (ix. 40 

 :r? 4-5), auricularum, quibus basi superius expanditur, et laminae fere 



(1) Ex nomine quo ab incolis Ugandae mons Ruwenzori vocatur. 



