4G -Art, 7- — S. Okamura : 



Oacyrrhynchitttn Sasaohte Sil. OKAMURA. sp. nov. 



(Tab. XXIV.) 

 Habitatio ad rupes humidas. Robustum, csespitosum, csespiti- 

 bus laxiusculis viridibus nitidis. Inflorescentia monoica; flores 

 utriusque sexus in ramis; folia perigonialia intima e basi truncata 

 obovata subito in acumen breviore et latiore acutum contracta, 

 enervia, c. 0.8 mm. longa et c. 0.56mm. lata; antheridia c. 8; 

 parapysibus numerosis. Caulis clongatus, retiens, hic illic fasci- 

 culatim rubiginoso-radiculosus, sectione teres c. 0. 50 mm. crassus, 

 fasciculo centrali pluricellulari, reti intermedio hyalino, cellulis 

 hexagonis c. 20-30,« in diametro, peripherico e cellulis fuscis 

 pluriseriatis (c. 4-6 stratis) valde incrassatis composito; ramis 

 erectis vel Jenifer curvatis, inter se remotis, c. 15-25 mm. lougis, 

 dense foliosis et teretibus vel subcomplanatis (sicca valde compla- 

 natis), obtusis vel acutis, . simplicibus vel "parce (1-3) ramulosis; 

 ramulis brevioribus ad 7 mm. longis. Folia sicca adpressa haud 

 homomallula, humida erecto-patentia vel patentia, inferiora 

 minuta, superiora sensim majora, vix décurrentia, rotundato- 

 cordata vel paene rotundata apice rotundato-obtusa vel breviter et 

 latiuscule acuta, c. 1.6 mm. longa et c. 1.6 mm. lata, concaviuseula, 

 marginibus basi integris dein minute serrulatis: nervo viridi, ad 

 3 /4-*/5 evanido, rarius 1-nervuloso, basi crassiusculo, apice tenui- 

 ore et dorso haud prominenti, in sectione transversali basi plano- 

 convexo dorso prominenti, c. 42,« crasso, e cellularum uniformium 

 stratis 4 composito, cellulis ventralibus c. 8, cellulis dorsalibus c. 

 12-13, omnino tenuibus; cellulis laminalibus valde chloroph}dlosis, 

 lœvibus, auguste linearibus, in medio folii c. 70-120,« longis et c. 

 5-7,« latis, basilaribus laxioribus c. 28-70/'. longis et c. 9-12,« latis, 

 alaribus pluribus rectangularibus c. 42// longis et c. )4,"- latis chloro- 

 phyllosis, marginalibus brevioribus c. 25-40,« longis, superioribus 

 brevissimis oblongis vel rhomboideis c. 14,« longis et c. 7,« latis. 

 Ramulus perichœtialis parce radiculosus. Bractae perichaetii intimse 

 e basi semivaginante sensim lanceolato-subulata? (subula recurva 

 argute serrulata), c. 2.2 mm. longa? et c. 0.6 mm. lata?, énerves. 

 Seta c. 10-13 mm. alta, rubura, Isevis, sicca torta. Theca inclinata, 



