CONTRIBUTIONES NOVAE AD FLORAM BRYOPHYTON JAPONICAM. 



79 



Okamuvaea cvistata Broth, var. gracilis Broth. 



Habitat in truncis arborum. Plantae graciles, caespitosae, 

 caespitibus late extentis, densis, rigidiusculis, lutescenti-viridibus, 

 nitidiiisculis. Caulis elongatus, repens, usque ad 4 cm. longus, 

 divisus, subpinnatim ramosus, hie illic fasciculatim fusco-radiculosus, 

 sectione teres, c. 0.16-0.2 mm. diam., fascicule centrali c. 28/^ 

 magno pauci-cellulari, reti intermedio hyaline, cellulis hexagonis vel 

 oblongo-hexagonis tenellis c. 9-14/^ magnis, cellulis periphericis c. 

 3-4-seriatis sensim minoribus lutescenti-fuscescentibus incrassatis ; 

 ramis erectis, strictis vel curvatulis, plerumque brevibus, c. 5-12 

 mm. longis, simplicibus vel subpinnatim vel subfasciculatim 

 ramulosis, dense foliosis teretibus, apice obtusis vel breviter 

 attenuatis. Folia caulina et ramea sicca adpressa, madida erecto- 

 patentia, concava, basi tri-plicata, 

 breviter decurrentia, late ovato- 

 lanceolata, apice sensim elonga- 

 te subulate attenuata, c. 1.2 

 mm. longa et c. 0.56 mm. lata, 

 marginibus basi late recur vis dein 

 ad apicem subplanis, integerrimis 

 vel minutissime serrulatis ; nervo 

 valido, ultra medium folii evanido, 

 in sectione transversah plano- 

 convexo, basi c. 42/^ lato et c. 28/^ crasso, e 4-stratis cellularum 

 incrassatarum uniformium composite ; cellulis laevissimis plus 

 minusve incrassatis, in medio fohi rhombeis vel oblongis, c. 15-17/^ 

 longis et c. 7-8 /j- latis, superioribus longioribus rhomboideis vel 

 sublinearibus c. 20-30 /^- longis et c. 6-7 /^ latis, basilaribus quadratis 

 oblongis vel breviter rectangulis c. 10-20// longis et c. 7-10/^ 



A.X25 



Fig. 35. Okamuraea cristata var. 

 gracilis. 



A. Folia ; f .c.r. folia caulina et ramea ; 

 f .rl. folia ramiilina ( x 25). 



