Page:Icones muscorum.djvu/47

Rh FISSIDENS OBTUSIFOLIUS, Wils.

Tab. 22.

humiles, densius gregariæ, vel cæspitulos laxiusculos efformantes, pallide virides.

3–6-linearis, simplex vel e basi divisus, erectus vel declinatus.

6–12-juga, expansa vel secunda, inferne minora obovata, superne majora oblonga, obtusa, laxiusculc pellucide areolata, cellulis angulato-rotundis; lamina apicali dimidiam vel tertiam duplicaturas partem æquante, dorsali ad basin sensim evanida; costa sub apice desinente.

dioici terminales: masculi diphylli; antberidiis 4–6 paraphysatis; perigonialibus lamina sola apicali instructis.

oblongo-ovalis vel fere obovata, macrostoma, pachyderma; peristomii dentibus breviusculis basi aurantiaceis, cruribus hyalino-albidis granulosis; annulo angustissimo persistente; operculo hemisphærico apiculato; calyptra dimidiata; sporis magnis.

Ledges of wet dripping rocks, Bank Lick, near Cincinnati, Lea. Moist rocks, Clifton, Ohio.

Easily recognized by its obtuse leaves and short operculum.

TAB. 22.—