CONTRIBUTIONES NOVAE AD FLORAM BRYOPHYTON JAPONICAM. 



17 



A.X30 X20 



FifJ, 7 . Aulacomitrivun 

 miiiutissimum. 



A. Folia ( X 30) ; B. Theca cum 



Bracteis perichaetii intimis 



(x20). 



Vaginula eylindrica, c. 



basilaribus ntrobique c. 8-10-seriatis, ad 

 nervum rectangulis c. 30-35 (j- longis et 

 c. 14 !'- latis, ad angnlos quadratis c. 

 14-15/i magnis saepe fuscescentibus. In- 

 ßoresccntia antoica ; flores masculi axil- 

 lares ; folia perigonialia intima minuta, 

 ovata, apice acuta ; antheridia c. 5. 

 Bracteae perichaetii intimae longissimae, 

 apice breviter acuminatae, c. 1.3-1.5 mm. 

 longae ; nervo tenui, ad 1/2 evanido ; 

 cellulis anguste rectangularibus, c. 20-35 /^ 

 longis et c. 7-8 >« latis, basilaribus longiori- 

 bus, superioribus brevioribus c. 14-20/^- 

 longis et c. 7-10/^ latis, omnibus laevibus. 

 0.32 mm. alta. Seta c. 1.1-1,3 mm. alta, erecta, tenuis, lutescenti- 

 fuscescens vel fuscescens, laevis. Theca erecta, ovalis, c. 0.4-0.5 

 mm, longa et c. 0.32-0.4 mm. crassa, deoperculata trugide ovalis, 

 fusca, laevis ; cellulis exothecii valde incrasatis, ad orificium in 

 seriebus c. 5-6 transverse rectangularibus valde incrassatis fuscis. 

 Peristoma dentés per paria approximati, lanceolati, c. 0.16 mm. 

 longi et basi c. 50-56 /^ lati, densiuscule articulati, minutissime 

 papiUosi vel fere laeves, fusci. Sporae c. 30 ^ magnae, fascae, 

 papillosae. Opercurum e basi conica rostratum, c. 0.32 mm. longum, 

 rostro erecto apice obtuso. Calyptra campanulata, thecam totam 

 obtegens, c. 0.96 mm. longa, luteo-fusca, pluries (c. 10) plicata, 

 nuda. 



Hondo : Prov. Sagami, in monte Hakone (Leg. Kiyotaka Hisauchi ! 

 3. I. 1915.). 



Species distinctissima, a congeneribus statura minore, foliis 

 angustis, cellulis folii majoribus facillime dignoscenda. 



