124 Müller, Musci Tschuctschici. 



angustiora multo minora oblongo-acuminata profunde carinato-canali- 

 culata, uhique e cellulis parvis hexagonis firmioribus areolata compli- 

 catula ad acumen flexuosa illis Senophylli sectionis similia; theca 

 in ped. medio tenui ruhente valde spirali recto glabro erecta angustissime 

 cylindracea brunnescens, annulo angustissimo persistente ; peristomium 

 in membrana basilari brevissirua spiraliter tortum pallide fuscatum 

 glabriusculum ; calyptra operculo rostellato recto fusco longior glabra. 

 Patria. Peninsula Tschuctschica, Pooten, Aug. 1881. 

 Species etsi incomplete observata distinctissima pulchra diraorpha, foliis 

 dimorphis glabris diaphanis atque theca angustissime cylindrica ab oninibus 

 congeneribus primo visu distincta. 



22. Orthotrichum (Orthophyllaria) perforatum u. sp. ; naonoicum , 

 cespites humiles robustiusculi laxe cohaerentes viridissimi aetate lute- 

 scentes ; raulis brevis ramulis brevissimis appressis pluries divisus 

 robustiusculus molluscus d(jnsifolius ; folia caulina erecto-conferta madore 

 non reflexa majuscula, e basi latiuscula ovali eleganter ligulato-acumi- 

 nata obtusate acuta aequalit^r concava , inargine e basi usque fere ad 

 summitatem aetate hyalino-limbatam maxime revoluta integerrima, nervo 

 canaliculato evanido, cellulis robustis majusculis rotundatis viridibus 

 aetate ferrugineo - luteis mollibus laeviusculis infima basi tenerioribus 

 pallidioribus rectangularibus ; perich. minora obtusiora; theca in ped, 

 perbrevi validiusculo exserta erecta urniformi-ovalis majuscula lutea 

 8-sulcata brevicolla, operculo tenero e basi depressa lata subito in 

 rostrum npiculato; calyptra campanulata fuscata laciniata pilis singulis 

 rectis hyalinis latiusculis hiitula, perist. simplicis dentes recti robustius- 

 culi 16 lato-lanceolati subulati per paria aggregati (8) lutei , linea 

 longitudinali apice plus minus hiante veluti perforati distincte trabe- 

 culato-articulati. 



Patriae Peninsula Tschuctschica, Indian Point, iu ossibus hunianis 

 vel aliis rebus, 16. Oct. 1881. 



Flores masculi ad pedem floris feminei majusculi depressiusculi ferruginei, 

 foliis apice plus minus obtusioribus. Orthotricbo Barthii vel 0. Pylaisaei 

 proximum, sed peristomio simplici jam distinctum. Species elegans. 



23. Orthotrichum (Orthophyllaria) subperforatum n. sp. ; 

 monoicum ; pulvinuli humiles inferne rufo -toraentosuli superne laxe 

 cohaerentes lutescentes rigidiusculi ; caulis pusillus subsimplex densi- 

 folius; folia caulina et perichaetialia madore et siccitate erecto-conferta 

 strictiuscula breviuscula an^ustiuscule ovate vel oblongate lanceolata 

 subito in acumen brevissimum obtusiusculum producta concava, margine 

 e basi usque ad acumen erosum valde revoluta, nervo canaliculato virente 

 evanido percursa, e cellulis grossiuscule rotundatis incrassatis distincte 

 papillosis basi pallidioribus magis rectangularibus levibus areolata , 

 theca in ped. perbrevi vix emersa cylindracea angusta parva levis 

 evacuata magis ovalis , operculo conico acuminato , calyptra angusta 

 parva fuscata apice pilis singulis strictis nodosiusculis flavidis hirtula; 

 perist. simplex: dentes 16 in 8 per paria aggregati breviusculi tenelli 

 ad lineam mediam plus minus apice perforati flaviusculi articulati 

 merabrauam fragilem corneam sistentes. 



Patria. Peninsula Tschuctschica, Pooten, 28. Aug. 1881. 



