12 



ART. 4. — SHÜTAI OKAMURA : 



Grinunia Kiyoshii Sh. Okamura. sp. nov. 



Habitat in saxis. Plantae tenellae, pulvinatae vel saespitosae, 

 superne lutescenti-virides inferne fuscae, hand nitidae, rigidiuscnlae. 

 Calais erectus vel adscendens, usque ad 2.5 cm. longus, inferne 



densiuscule fusco-radiculosus, irregulariter et 

 fasciculatim ramosus, sectione teres, c. 0.24 

 mm. diam., fasciculo centrali nullo, reti 

 centrali fuscescenti, cellulis hexagonis c. 20 /-« 

 magnis, parietibus incrassiuscnlis, cellulis peri- 

 phericis c. 4-5-seriatis minoribus c. 10-15/^ 

 magnis valde incrassatis fuscis ; caulibus 

 ramisque densiuscule foKosis obtusis. Folia 

 sicca adpressa vix crispata, madida erecto- 

 patentia, basi breviter decurrentia, ovato- 

 lanceolata, in acumen subulatum carinatum 

 attenuata, summo apice obtusa vel acuta, 

 epilosa, basi concava apice carinata, c. 

 2.0-2.4 mm. longa et c. 0.5-0.7 mm. lata, 

 marginibus e basi ultra medium revolutis, 

 in parte subulae obsolete denticulatis, utique 

 summo apice serralatis ; nervo valido, apice evanido, dorso e medio ad 

 apicem bi-seriate denticulate, in sectione transversali plano-convexo, 

 dorso prominenti, basi c. 60/^ lato et c. 40/^ crasso, ducibus 

 ventralibus 2, celluis dorsalibus c. 10, fasciculo streidearum e stratis 2 

 cellularum composite ; cellulis laminalibus laevibus, basilaribus anguste 

 linearibus c. 30-40 /^ longis et c. 7-9 /^ latis, margines versus quadratis 

 vel rectangulis, parietibus incrassiuscnlis hand porosis, caeteris qua- 

 dratis vel brève rectangulis incrassiuscnlis paulum sinuosis c. 7-9 f^ 

 magnis laevis, in parte subulae et ad margina 2 -stratis subopacis. 



A.X30 



Fiff. 5, Grimmia 

 Kiyoshii. 



A. Folium (x30); 



B. Sporangia ( x 15). 



