MUSCI. 



VJ 



cumbens inordinate ramosis basi rufo-, apice lutescente-viridi , ramis brevibus subiulaceis subsecundis, 



apice fasciculatis adscendentibus arcuatis; folia caulina erecta homomalla, inadida ersclo-patula concava lax.- 

 imbricata ovato-lanceolata breve acuminata, acumine obtuso reflexo, denticulate, mannne e basi infra 



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apicem reflexo, costa lata ultra medium contiaua; cellulis alaribus quadratis, inlermediis elongate hexago- 

 nalibus, ceteris linearibus. Perichaetium radicans; folia vaginantia, interna longiora longe acuminata 

 hyalina subecostata integra, externa squamiformia. Galyptra minuta laevis cucullala contorquala. Capsula 

 in pedicello i2-i5 ram longo intense purpureo, elliptica rufescens recta vel evacuata pa rum obliqua; operculo 

 conico subulato purpureo. Peristomii dentes externi lanceolati fuscescentes apice rugosi, interni breviores 

 grisei e membrana parum exserta; cilia rudimentaria. Sporae generis maxim®. 



In valle Mexicensi, ad radices, sept. i865 (Bocrg. n° i35()). 



3. R. subjulagea Besch. (Cylindrothecium subjulaceum Sch. in litt.). — Monoica? Dense cwspitosa repens 

 lutescente- viridis nitescens; ramis erectis saepe divisis fasciculatis; folia caulina ovato-lanceolata slricta sub- 

 julacea plicata, mollia turgescentia, obtuse acuminata, acumine dentato obliquo, margine revoluto, cost; 



i 



ultra medium evanida. Capsula in pedicello purpureo, longe ovato-cylindrica erecta, operculo breve conico. 

 Peristomii dentes externi lati, interni aequilongi carinati e membrana alte producta, ciliis singulis rudi- 

 rnentariis. Sporae minutae. 





Habitu R. Bourgceance admodum similis, seddiffert foliis majoribus strictis, capsula crassiore minus exacie 

 cylindrica, operculo breviore, peristomii denlibus majoribus, processu multo longiore , membrana longius 

 exserta, sporis tenuioribus. 



Mirador (F. Muller in herb. Schimper). 



k. R. viridis Besch. — Dense caespitosa repens pallide viridis, ramis subjulaceis plumulosis, fasciculalo- 

 ramosis, erectis; folia stricta dense imbricata lanceolata minuta, angustiora, margine revoluto, plicata, 

 cuspidata apice subdenticulata,semi-costata; folia perichaetialia lanceolata longe acuminata subintegraobsolrti* 



costata. Capsula in pedicello rubro laevi subunciali vel minore, ovato-cylindrica, operculo conico longe subu- 

 lato, columella persistente; peristomii dentes externi ut in genere, interni aequilongi e membrana brevissima 

 exserta; cilia rudimentaria. Sporae minutissimae. 



R. Bourgceana* proxima, sed caespitibus pallide viridibijs, foliis angustioribus magis cuspidalis, minus con- 

 cavis, sporis minutis, primo visu differ t. 



In valle Mexicensi (Bourg. n° i35g , pro parte). 



5. R. Scuimperi Besch. (Cylindrothecium heteropterum Sch. in herb.). — Monoica. Caespites compacti molles 

 pallide smaragdineo-virides, nitentes, Caulis primarius repens, ramis brevibus fasciculatis rectis vel curvulis; 

 folia mollia erecto-patula undulata sicca homomalla, humida turgescentia longe oblongo-lanceoiata obi use 

 acuminata apice concava dense denticulata late semi costata; cellulis basilaribus late quadratis, ceteris hexa- 

 vel pentagonalibus; folia juniora longiora cuspidata. Perichaetium minus cylindricum albicans, foliis lanceo- 

 lati s integris basi latis, apice longe cuspidatis subecostatis. Perigonium in caule primario nascens, foliis 

 concavis ovatis ecostatis. Capsula in pedicello fere subunciali leniter purpureo, cylindrica erecta vel parum 

 curvula exannulata(?). Operculum oblique alte conicum. Peristomium minus, dentes externi lanceolati breves 

 dense articulati punctulati rugulosi, interni flavidi aequilongi apice subhyantes e membrana longe exserta 

 producti; cilia nulla. Sporae minutae. 



Orizaba, Cerra de Cristobal, 1 853 (F. Muller). 



6. R. stricta Besch. (Pijkisia? subjulacea Sch. in herb.). — Laxe eiespitosa rufescens; caulis primarius 

 repens, secundaria erectus subuncialis superne divisus, ramis aequalibus strictis, gracilibus brevibus; folia 

 dense imbricata subsecunda rufescentia longe ovato-lanceolata e basi lata, plicata concava margine revoluto. 

 obtuse acuminata superne denticulata, costa crassa ultra medium evanida; cellulis basilaribus grosse qua- 

 dratis. Folia pericha?tialia stricta lanceolata longe cuspidata apice obliqua integra ecostata. Capsula in pedi- 

 cello rubro scmiunciali, minuta cylindrica ore parum coarctala brunnea. Peristomii dentes externi breves 



DOT AM OLE. 



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