460 



Surculus simplex vel innovationes singulas binasve inferne 

 subnudas siiperne gemmaceas proferens, tomento atro-fusco 

 papilloso parce vestitus. 



- Caulis nigricans, 0.24 mm. crassus, sectione pentagonus; 

 fasciculus centralis ca. 0.03 mm. crassus, areolis ceteris magnis, 

 in Strato peripherico minoribus, parietibus tenuibus. 



Folia caulina siccitate erecta — adpressa, crispatula, humi- 

 ditate erecto-patentia , inferiora indistincte decurrentia, ovato- 

 acuminata, margine recurva, costa percurrente ; superiora baud 

 decurrentia, ovali- acuminata — ovato-lanceolata, 1.4 mm. longa 

 et 0.5 mm. lata, citius acuminata vel sensim cuspidata, intégra, 

 toto margine latiuscule reflexa, vix limbata, parum concava, 

 basi baud vel brevissimo tantum spatio rubentia; suprema 

 longiora, ut 1.8 mm. longa, ovali-lanceolata, longius cuspidata, 

 costa excurrente; cellulœ tenues, parietibus transversis porosis, 

 basilares rectangulae — elongato-hexagonae, 0.05— 0.066 mm. longæ 

 et 0.025 mm. latæ, angulares foliorum inferiorum elongato- 

 rectanguiæ, superiorum turgidae, quadratæ ; cellulæ folii superioris 

 elongato-hexagonae, ca. 0.06 mm. longæ et 0.018 mm. latæ, mar- 

 ginales in seriebus nonnullis angustiores, oblique dispositæ, in 

 ipsa serie marginali auguste rectanguiæ, vix crassiores; costa 

 ad insertionem ca. 0.08 mm. lata, fusco-rubra, ceterum fusco- 

 virens, in foliis inferioribus in vel cum apice dissoluta, in 

 supremis breviter excurrens, plano-convexa, cellulis ventralibus 

 2—3, ducibus 3 — 4, fasciculo comilum minuto, illo stereideariim 

 bene evoluto, cellulis dorsalibus pro ratione magnis, ca. 8. 



Folia iîmovationum caulinis latiora et breviora, brevissime 

 cuspidata, margine angustius reflexa. 



Folia perichætialia intima minuta, ovato-lanceolata, pro 

 magnitudine longiuscule cuspidata, margine plana, costa per- 

 currente. 



Inflorescentia heteroica vel forsan polyoica, flores fere 

 omnes feminei, rarissime bisexuales visi ; antheridia perpauca. 



