64 CONTRIBUTIONS TO THE BRYOLOGY 



Since the discovery, in Ohio, of two other plants, congeners with 

 that of Mr. Schweinitz, it became necessary to reform the generic 

 characters. The generic name has also been changed to Noto- 

 thylas ; the name of Carpobolus having been previously applied to 

 a genus of Fungi, which is still retained by some authors ; further- 

 more, its etymology conveys an idea inapplicable to these plants. 



The genus and its species are thus characterized in the Musci 

 Alleghanienses : — 



NOTOTHYLAS, SuUiv. Muse. Alleghan. n. 289, 290. 



Carpobulus, Schweinitz, in Journ. Acad. Nat. Sci. Philad. 2, p. 336. (1822). 

 Targionise spec, Schceiniiz, Specim. Fl. Amer. Sept. Crypt, p. 23.(1821). — 

 N. ah E., Europ. Leherm. 4, p. 317. 



Monoica. Fructus dorsales, sparsi. Involucrum sessile, frondi 

 continuum, initio clausum, tandem superne fatiscens. Perianthium 



nullum. Calyptra Capsula involucro inclusa, oblongo- 



sphseroidea, compressa vel ovato-cylindrica, brevissime pedicellata, 

 pedicello in bulbo incrassato affixo, sutura longitudinali ab apice ad 

 medium subbivalvatim, vel sutura deficiente frustulatim, dehiscens. 

 Columella linearis. Sporse quaternatim aggregatse, subglobosje, 

 laeviusculae. Antheridia frondi immersa, elliptico-globosa. Frons 

 orbicularis, laciniata, tenera, papuloso-reticulata, margine undulato- 

 crispa, subtus radiculosa, massis granulatis hie illic immersis. 



Plantse annuae, terrestres, limicolae, in umbrosis Ohionis, Caroli- 

 naeque Septentrionalis observatse. 



1. N. ORBICULARIS, SulHv. (Carpobolus orbicularis, Schweinitz, I. c.) 

 involucro suberecto ; capsula oblongo-ellipsoidea compressa 

 cum vel absque sutura concolori : caetera ut in A^. valvata. 



