Oct., i9i5.| BROTB. 1/1 OKAMVRA-.—lSHIBAEA, NOV. EN. 187 



externa obovato-oblonga apice longe attenuate, intima obovato- 

 oblonga, apice acuta, c, 0.6-4 mm. longa et. c. 0.24- mm. lata, 

 concava, enervia ; antlicridia c. 6 ; paraphy^ibus pauci-, c. 

 0.24- mm. longis, hyalinis ; flores feminci in ramis ran us in 

 caule positi. Hamulus perichaetialis parce radiculosus. Brac- 

 teae perichaetii iutimae semivaginatae, e basi oblongo-lanceolata 

 subito in acumen elongatum subulatum attenuatas, c. 1.0 mm. 

 longae, apice minutissime serrulatae; nervo infra summum apicem 

 evanido ; cellulis linearibus, basilaribus longe rectangularibus. 

 Vaginula cylindrica. c. 0.8-0.9 mm. longa, albicanti-fuscescens, 

 c. 1.2-1.5 mm. alta. Seta stricta vel leviter flexuosula, rubra, 

 lsevis, sicca superne torta. Theca erecta, oblonga vel oblongo- 

 cylindrica, symmetrica, c. 1.2-1.6 mm. longa et c. 0.56-0.72 

 mm. crassa, luteo-rubra, laevis, collo conico brevi ; cellulis exo- 

 thecii irregulariter rectangulis vel quadratis, ad orificium in seri- 

 ebus c. 6 minoribus hexagonis ; stomatibus in collo paucis 

 phaneroporis. Annulus nullus. Peristomium duplex; exostomii 

 dentes subulato-lanceolati, basi connati, c. 0.2-0.24 mm. longi 

 et basi c. 42-56// lati, strato dorsali luteo vel iutescenti-fusco, 

 basi transversim striolato dem ad apicem laevissimo, linea 

 media flexuosula, strato ventrali luteo angustiore, c. 18—20 

 lamelloso ; endostomium flavescens laeve ; corona basilaris c. 

 40/^ alta; processus dentium 4/5 longitudinis, leviter carinati 

 in carina perforati, sed plerumque divisi et fragosi, fragmentis 

 dentibus adhasrentibus ; cilia nulla. Sporae c. 15 u. magnse, 

 fuscescenti-virides, lasves. Operculum conicum, apice obtusum, 

 c- 0.32 mm. longum et c. 0.32 mm. diam. Calyptra cucu- 

 llata, c. 1.9 mm. longa, lutescenti-viridescens apice fusca, laevis. 



Japonia : Prov. Sinano ; Sironma-jiri (Leg. Ekichi Ishiba ! 

 17. VIII. 1909.) et SakaJ-mura, Shimotakai-gun (Leg. Shinzo 

 Ito! 28. X. 1913.). 



Genus novum Homalothecio Br. eur. arfine, sed infloreseen- 

 tia, teneritate omnium partium, foliis haud plicatis nee non 

 peristomii structura exquo longe diversum. 



Genus clar. Ekichi Ishiba, floras bryologica? Japoniae scru- 

 tator! meritissimo dedicatum. 



