V. F. Brotherus, Musci africani, Il, 275 
Rh. glutinosum Broth. n. sp. 
Syn. Hypnum (Aptychus) glutinosum C.-Müll. in sched. 
Autoicum; gracile, caespitosum, caespitibus densis, laete viridibus, 
nitidis; caulis longe repens, dense ramosus, ramis erectis, 7—19 mm 
altis, laxiuscule foliosis, strietis vel curvatulis, obtusis; folia patula, con- 
cava, elliptica, acuta, marginibus late revolutis, integerrimis, enervia, 
cellulis anguste ellipticis, apicalibus brevioribus et latioribus, basilaribus 
infimis aureis, alaribus quaternis, minutis, vesiculosis, aureis vel hyalinis, 
supraalaribus paucis, minutis, omnibus laevissimis; bracteae peri- 
chaetii minutae, erectae, ovato-lanceolatae, integerrimae, basi laxe areo- 
latae; seta 4 cm alta, lutescenti-rubra, sicca flexuosula, tenuissima, 
laevissima; theca suberecta, minuta, asymmetrica, ovata, sicca deoper- 
eulata sub ore haud constricta, pallida; peristomium duplex; exostomii 
dentes, c. 0,3 mm longi et c. 0,06 mm lati, lutei, apice hyalini, scabridi, 
densissime et alte lamellati; endostomium sordide flavidum, papillosum, 
processus carinati, angustissime perforati; eilia 0; spori 0,020—0,025 mm, 
laete virides, laeves; operculum e basi conica rostratum, rostro longo, 
luteo, curvatulo. 
Kamerun: an Luftwurzeln von Pandanus candelabrum bei Bibundi, 
Ondje und Masakke (Dus£x). 
Species Rh. fluminali affinis, sed statura multo graciliore, foliorum forma, cellulis 
alaribus minutis aliisque notis optime diversa. 
Rh. rivuletorum Broth. n. sp. 
Syn. Hypnum (Aptychus) rivuletorum C.-Mill. n. sp. in sched. 
Autoicum; gracile, caespitosum, caespitibus densiusculis, plus minus- 
ve extensis, laete viridibus, nitidis; caulis repens, dense ramosus, ramis 
erectis, brevibus, 5—7 mm altis, laxiuscule foliosis, strictis, obtusis; folia 
patula, concava, elliptica, subito longiuscule acuminata, marginibus paulum 
recurvis, integerrimis, enervia, cellulis anguste ellipticis, basilaribus in- 
fimis aureis, alaribus quaternis, magnis, vesiculosis, aureis vel hyalinis, 
supraalaribus paucis, hyalinis, omnibus laevissimis; bracteae peri- 
chaetii minutae, erectae, ovato-lanceolatae, longiuscule acuminatae, inte- 
gerrimae, basi laxe areolatae; seta 4,5 em alta, flexuosula, tenuissima, 
rubra, laevissima; theca horizontalis, minuta, asymmetrica, ovata, sicca 
deoperculata sub ore haud constrieta, pallide rubra; operculum e basi 
conica rostratum, rostro longo, luteo, obliquo. 
Kamerun: an Steinen in Bächen bei Buea und an überrieselten Felsen 
bei Etome im Gebirge c. 400 m (Dus£x). 
Species Rh. glutinoso similis, sed statura graciliore, foliis subito longiuscule 
acuminatis, seta longiore et theca horizontali dignoscenda. 
Rh. brachytheciiforme Broth. n. sp.; autoicum; caespitosum, 
caespitibus densiusculis, lutescentibus, nitidis; caulis repens, ramosus, 
ramis teretibus, densiuscule foliosis, brevibus, simplicibus vel longioribus, 
18* 
