26 



P. DUSEN, MOSSES FROM THE WEST COAST OF AFRICA. 



Calymperes (Hyophilina) asteristylum C. Muller n. sp. in litt. 



Laxe caespitosum, caespitibus humillimis, parvis, fusco-viridibus, hand nitidis; caulis 

 erectus, strictus, brevissimus, usque ad 5 mm. altus, inferne radiculosus, dense foliosus, 

 simplex; folia siccitate erecto-patentia vel pateritia, incurvata et valde 

 convoluta, humiditäte e basi erecta vaginanteque patula, elongate lanceo- 

 lata, canaliculata vel iriterdum subconvoluta, stricta, marginibus planis, 

 crenulatis vel crenulato-dentatis, nervö valido, viridi, basi 0,057 — 0,067 mm. 

 crasso, longe subclavate excedente, superne remote, siiramo derisissime et 

 minutissime papilloso, sa?pissime sphseris corpusculorum puccineoideorum 

 efformatis coronato, limbo angustissimo, basi 0,03 — 0,04 mm. lato, intra- 

 marginali, e basi vix ad medium folium producto; cellulce basales hyalina^, 

 rectangulae, circiter 5 13 folii longitudinis (parte excedente nervi excepta) 

 oecupantes, 7 — 11-seriata 3 , superiores chlorophyllosae, virides, parvse, ple- 

 rumque rotundate rectangulae vel subquadratae, 0,0054 — 0,oo67 mm. magnae, 

 superne saltem minutissime papillosse; cetera ignota. 



Habitat in Camerunia in ramis arborura. nbi prope Ekumba-Liongo pagum m. Junio a. 

 1892 legi. 



A rather small species, which occurs on the savannahs, and seems to belong to the stepp- 

 vegetation. 



Fiff. 



folia 



18 



Pl. 00, (ig. 12, planta magn. nat. 



Calymperes (Hyopliilina) tenellum C. Muller n. sp. in litt. 



Densiuscule caespitosum, caespitibus humilibus, sat expansis, fusco-viridibus, haud 

 nitidis; caulis strictus vel arcuatus, usque ad 1,2 cm. longus, inferne radiculosus et aetate 



defoliatus, ceterum densiuscule foliosus, simplex vel interdum 

 bifurcatus; folia sicca appressa, incurvata, convoluta, humida 

 e basi erecta vaginanteque patentia, inferiora lanceolata, sub- 

 canaliculata, marginibus planis, integris, nervö valido, lsevi 

 percursa, superiora majora, usque ad 3,i mm. longa et 0,27 

 — 0,30 mm. lata, linearia, acuminata vel subobtusa, canali- 

 culata, apicera versus saspissirae convoluta, marginibus planis, 

 superne subcrenulätis, ceterum integris, nervö valido, basi 

 d 0,09 mm. crasso, superne dorso dense subpapilloso, usque 



in acumen producto, extremum dilatato et ventrali, saepe 

 corpusculis puccineoideis ornato; cellulce basales hyalinse, Hquidse, magnse, circiter 12- 

 seriata', rectanguUe, circiter l . 3 longitudinis folii oecupantes, cetera3 chlorophyllosae, 



