Rhynchostegium. 5 



eingesclinürlen Kapsel, an dem hochgelben, lang- und di'inn- à ses drnts péristomiiiles munies de lamelles Irès-rappro- 

 geschnäbelten Deckel und an den auf der Innenseite tief chées et très-larges à leur face intérieure, 

 lamellirten Peristomialzälinen. 



Sect. 11. 



Folia lanceolala, longe costala, cellulis basilaribus haud inflatis ; annulus e 

 dupltce cel lularum série, dentés er assiores lamellis minus latis, r emotioribus. 



R h y II c h o s t e g i e 1 1 a. 



2. RHYNCHOSTEGIUM TENELLÜM NoB. rä/wa/o-cae«p?Vo«»(m, monoicum ; canle repente parce 

 divisa ratnuloso , rumulis brevibus erectis; foliis in caule et ramulis simitibus , undique patentibus, 

 vel homomallis, e basi anguste oblonga sensim angusle lanceolatis , apice remote et obsolete dentatis, 

 Costa viridi cum apice evanida ; perichaetio erecto-patenti, molli, paltido, foliis perichaetialibus ecos- 

 fatis; vaginula molli, pallida, brevi, truncata; capsula crassiuscula ovata et ovali, siccitale abbreviata, 

 sub ore constricfa; operculo magno rostrato ; annula latiusculo ; peristomii denlibus intus remotius 

 lamelligeris, ciliis saepe connutis. 

 Hypnum tenellum Dicks. Fase. IV, PI. Crypt. p. 16, Tab. XI, fig. 12. — Hook, et Tayl. Muse. Brit. 

 ed. 2, p. 1.55. — De Notaris Sijllab. Muse. ital. p. 9 et 10. — Hartman Skand. Flor, ed. 

 5, p. .320. — ScHWAEGR. Suppl. II, P. I, p. 161, Tab. CXLIV (icônes valde imperfectael). 

 Hypnum Stereodan Algirianus Desfont in Brid. Bryol. univ. II, p. .592. 



Habit. Ad muros umbrosos praeprimis arciiim vetustaruin per totam Europam, in calidiore 

 frequeiitius quam in frigidiore; in omnibus ruinis antiquls a Siieeia usque in Italiae atqiie Hispa- 

 niae exfremitatem meridionalem observavimns. In tota Afiica septentiionali atque in Aiabia vulga- 

 tissimum esse videtur. 

 Matur. Hyerae. 



Tab. H. Caespites tenues, inteitexti, velutini, sericeo nitentes, pallide vel e lutescenfe, raiius 

 intense virides. 



Planta repens semiuiicialis et uncialis, teiiella, mediociiter ramosa, i'amulis brevibus plus mi- 

 nusve confettis, erectis (Fig. 1, 2, 3). 



Folia remota vel satis coiiferta, laiiceolata et elongato-Ianceolata, tenui-acuminata, concava, 

 Costa viiidi usque in apicem procedente instiucta (4 — S), seiiceo-nitentia, e lutescente viridia, leti- 

 culatio ex areolis elongatis liexagono-rhomboidalibus, basi laxioiibus, echloropliyllosis, utiiculo pii- 

 mordiali haud raio conspicuo sei'pentino (Ob, 6a). 



Flores monoici, inaseuli in femineorum proximitate (9); folia peiigonialia ecostata (10), aiithe- 

 ridia parapbysata (11). 



Fructus in caule primario sparsi. Perichaetium loiigius breviusve laxe imbi'icattitn , pallidum; 

 folia perichaetialia ovata et oblonga plus minus subito et longe acuminata, ecostata (12, 13, 14), 

 mollia, pallida, laxe ateolata. Ramulus peiichaetialis bievis, radicans. Vaginula ovata, truncata, 

 pallide viridis, mollis, parapliysibus paucis instructa (15). Calyptra majuscula tota albida (16). 

 Capsula in pedicello semiuuciali laevi rubeilo cernua et horizontalis abbreviato-ovata vel ovalis, ven- 

 tricosa vel symmetrica, collo brevi instructa (17 — 21), fulvella , sicca deoperculata sub ore dilaCato 

 constricta, pedicello ad dextram torto (23). Operculum luteolura e basi lata convexo-conica oblique 

 rostratum, rostro solido (22). Annulus e duplici cellularnm série compositus (24, 25). Peristomii 

 dentés basi aurantiaci, caeterum luteoli, e lineali-lanceolato subulati, transversim striolati apice 

 eroso-granulosi, remotius lamellosi, interni lutescentis processus inter articulationes hiantes, cilia 

 tenuia binata, saepe conglutinata, punctnlata, pallida (24). 



