1.] 109 



phyllo farctæ; marginales partis folii dimidiæ superioris in 1 — 2 

 seriebus elongatæ, angustæ, rhomboides. Costa valida, ad basin 

 rubram 0.08 mm. lata, ceteroquin fusca — fusco-olivacea — vin- 

 dilla, in foliis infimis minutis in vel sub apice dissoluta, in foliis 

 comalibus et innovationum sterilium in cuspidem ad 0.25 mm. 

 usque longam excurrens. Folia perichætialia caulinis proximis 

 minora, e basi lata triangulari sensim in cuspidem e costa formatam 

 angustata, elimbata, margine plana. Inflorescentia heteroica; flores 

 enim synoici et numerosi masculi in ramulis brevibus gemmiformi- 

 bus terminales, omnes foliis comalibus arcte conniventibus inclusi. 

 Antheridia rubicunda, ovalia, 0.30 — 0.35 mm. longa; archegonia 

 dimidio longiora; paraphyses ad basin rubentes, longitudine anthe- 

 ridiorum vel longiores. Seta ad 1 cm. longa, ad basin 0.22 mm. 

 crassa et luteo-rubra, superne pallidior, apice hamata. Capsula 

 nutans — pendula, pallide fuscescens, una cum collo operculoque 

 2.25 mm. longa, 0.65 mm. crassa, opaca, in sicco sub oriflcio non 

 angustata; collum curvulum, longitudine sporogonii, siccum longi- 

 tudinaliter sulcatum. Cellulæ exothecii marginales in 2 seriebus 

 parvæ, quadratæ, submarginales in pluribus seriebus majores, sub- 

 rotundæ — sexangulares, ceteræ rectangulares, quadratæ, ro- 

 tundate sexangulai es, leptodermes; eædem colli breviter rectangu- 

 lares vel quadratæ. Stomata numerosa, late ovalia, ca. 0.04 mm. 

 lata. Dentes peristomii externi sub ipso capsulæ oriflcio inserti, 

 0.23 mm. longi, 0.04 mm. lati, remoti, e basi fusca dilute aurantii, 

 dimidio superiore hyalini, sensim angustati, anguste limbati, linea 

 mediana recta, lamellæ ca. 16, interdum leniter undulatæ, scutula 

 basalia anguste rectangularia (1 : 3), ut suturæ eorum punctulata, 

 superiora quadrata, papillulosa, suturis eorum transversis et linea me- 

 diana lævibus, valde incrassatis, et lateraliter et facie dorsali distinctis- 

 sime prominentibus. Peristomium intemum liberum, subtilissimum, 

 hyalinum; membrana longitudine { — | dentium; processus longi- 

 tudine fere dentium, siccitate conniventes, angustissimi, fere subu- 

 lati, (0.024 mm. lati,) apice fere ciliiformia, linea mediana vix con- 

 spicue rimosi, margine irregulares, crenulati, sublobati, interdum 

 fere appendiculati, satis dense papillosi. Cilia nulla. Annulus du- 

 plex, ca. 0.07 mm. latus, spiraliter dissiliens. Operculum parvum, 



