194 Beiträge zur Flora von Afrika. IX. 
Species formis minoribus P, juniperini Willd. sat similis, sed foliis serratis aliis- 
que notis longe diversa. 
P. (Pogonatum) usambaricum Broth. n. sp.; dioieum; caespi- 
tosum, caespitibus densis, elatis, atro-viridibus; caulis 8—10 cm altus, 
erectus, strictiusculus, e basi laxiuscule foliosus, simplex; folia sicca 
tortilia, profunde canaliculata, humida patentia, strietiuscula, subplana, 
infima minuta, superiora sensim majora, e basi erecta, vaginante, c. 2 mm 
longa et ec. 2 mm lata raptim lineari-lanceolata, breviter acuminata, acuta, 
lamina ad 7 mm usque longa, marginibus ereetis, in parte superiore laminae 
argute serratis, serraturis cellula unica hyalina vel rufescente, acuta ter- 
minatis, nervo applanato, in parte superiore basis e. 0,2 mm lato, dorso 
superne spinuloso, lamellis erebris, eirciter 45, ab uno strato cellularum 
(2—4) constructis, cellula marginali in sectione transversa majore, pulvi- 
nariter elevata, cellulis basilaribus elongate subrectangularibus, margi- 
nalibus vix brevioribus, sed angustioribus, laminalibus minutis, subrotundis; 
bracteae perichaetii foliis similes, altius vaginantes; seta 3—5 em 
alta, sicca flexuosula, rubra, laevissima; theca erecta, deoperculata 
horizontalis, asymmetrica, subeylindrica, sicca indistincte plicata, demum 
atrofusca, ubique papillosa; opereulum e basi plana in rostellum breve, 
curvatulum abrupte angustatum; calyptra pallide ferruginea, dense 
pilosa. Planta mascula ignota. 
Usambara: Maramu-Station, überall Erdflächen in dichten Rasen 
überziehend (Horst n. 2503). 
Species P. tortili Sw, affinissima, sed foliis superne angustioribus, cellulis basi- 
laribus ad marginem elongatis, angustis eisdemque laminalibus minoribus distinguenda. 
P. (Pogonatum) Holstii Broth. n. sp.; dioiecum; sordide vel 
rufescenti-viride; caulis 4,5—6 cm altus, flexuosus, e basi foliosus, 
simplex; folia sieca tortilia, profunde canaliculata, humida patentia, 
stricta, subplana, infima minuta, superiora sensim majora, e basi bre- 
vissima, vix dilatata lineari-lanceolata, acuta, lJamina ad 5 mm usque longa, 
marginibus ereetis, in parte superiore laminae minute serratae, nervo 
applanato, basi c. 0,2 mm lato, dorso superne spinuloso, lamellis crebris, 
eirciter 45, ab uno strato cellularum (2—4) constructis, cellula marginali 
in sectione transversali majore, pulvinariter elevata, cellulis basilaribus 
breviter rectangularibus, laminalibus minutis, subrotundis; bracteae 
perichaetii minores, alte vaginantes, subintegrae; seta 2,5 cm alta, 
sicca flexuosula, tenuis, rubra, laevissima; theca suberecta, deoperculata 
horizontalis, asymmetrica, subeylindrica, sicca haud plicata, sordide pallide 
fuscidula, papillosa; operculum e basi plana conico-apiculatum ; ca- 
Iyptra pallide ferruginea, dense pilosa. Planta mascula ignota. 
Usambara; ohne nähere Standorte (Hoısr n. 126, 1074). 
A specie praecedente foliis basi brevissima, vix dilatata, e cellulis breviter rec- 
tangularibus constructa nec non marginibus laminae minutius serratis jam differt. 
