16 AKT. 4. — SHÜTAI OKAMURA : 



Species R. aclculari (L.) Bkid, similis, sed foliis apice sub- 

 cuspidate constractis hyalinis papulosis longe diversa. 

 Nomen speciei in honoren Leg, Dom. Nizö Iwasaki. 



ORTHOTRICHACEAE. 



Ainphidiu/ni laiyponicutn (Hedw.) Schimp. 



Hondo : Prov. Miitsii, iii monte Hakködasan (Leg. Ejiro Ueäiatsü ! 

 30. VII. 1907.). Hokkaido : Prov. Ishikari, in monte Teineyama, Sapporo 

 (Leg. Nizö Iwasaki ! 25. IX. 1914.) 



Species nova ad foloram japonicam. 



Aulacoinitriujn ininutisshmtm Sh. Okamuea. sp. nov. 



Habitat in truncis. Plantae minutissimae, caespitosae, cae- 

 spitibns viridibus vel fusco-viridibus, hand nitidis, densiusculis. 

 Caulis repens, brevis, usqne ad 3-4 mm. longus, densissime fusco- 

 radiculosns, parce (1-3) ramosns, sectione teres, c. 0.12-0.15 mm. 

 diam., fascicnlo centrali c. 30-35 !>■ magno, reti ceterum incrassiore, 

 areolis nbiqne fere ejusdem magnitndinis, celliilis hexagonis c. 15^ 

 magnis fuscis c. 3-4-seriatis ; ramis brevibns, vix ultra 2 mm. 

 longis, erectis, simplicibus vel innovando-ramulosis, dense foliosis. 

 Folia sicca plus minus inflexo-adpressa, madida patentia, carinato- 

 concava, lineari-lanceolata, breviter acuminata, c. 1.1-1.4 mm. 

 longa et c. 0.24-Ö.28 mm. lata, marginibus usque ad medium re- 

 volutis, integerrimis ; nervo crassiusculo, apice evanido, in sectione 

 transversali piano -convexo, dor so paulum prominenti, basi c. 42 /^ 

 lato et c. 20 j« crasso, e stratis 2-3 cellularum uniformium com- 

 posite ; cellulis laminalibus majoribus, minutissime papillosis, haud 

 opacis, rotundato-hexagonis, c. 14-17 ij- magnis, parietibus crassius- 

 culis, in medio folii utrobique e nervo ad margina c. 7-8-seriatis, 



