172 CONTRIBUTIONS TO THE BRYOLOGY 



erecto subpendula, annulo duplici revolubili, operculo subhemisphaerico apiculato : 

 planta mascula tenuiore, foliis perigonialibus externis e basi concava subiter line- 

 aribus patulis, intimis minoribus ovatis erectis. 



B. pulchellum, Muse. Alleghan. No. 101. 



HAB. Clay banks, in woods, Cincinnati and Lancaster, Ohio ; very rare. 



The large size of this Moss, its long linear perichaetial leaves furnished with a large 

 nerve, the form of its perigonial leaves, the absence of redness in the foliage, and the 

 presence of a conspicuous annulus, separate it from the closely related B. pulchellum, 

 Hedw. Named for my friend, Leo Lesquereux, who discovered the Lancaster locality 

 of this Moss, and detected its specific characters. 



5. DICRANUM RHABDOCARPUM (sp. nov.) : dioicum, densissime caespitosum ; caule plu- 



ries dichotomo ascendente tomentoso-radiculoso ; foliis lutescente-viridibus nitidis 

 erecto-patentibus (apicialibus saepe subhomomallis) strictis concavis, caulinis lan- 

 ceolatis, comalibus elongato-lanceolatis attenuatis, omnibus costa infra apicem den- 

 tatum evanida instructis, areolatione laxa ; capsula erecta ovali-cylindrica regulari 

 sicca 5-8 costata exannulata, operculo oblique longirostro : flore masculo in planta 

 tenuiore terminali. 



HAB. Santa Fe, New Mexico, Mr. Fendler. 



In general aspect, D. rhabdocarpum is very like D. scoparium. Its nearest affinity, 

 however, is with D. palustre, Brid., from which it is distinguished by its broader and less 

 attenuated leaves, entirely destitute of transverse undulations, with points more obtuse 

 and strongly dentate, but mainly by its erect regular and prominently ribbed capsule. 

 It is also destitute of the slender upright shoots, with small oval and acute leaves, which 

 occur in D. palustre. 



TAB. III. Fig. 1, 2. Female and male plants, of the natural size. 3. Antheridium and paraphysis. 4. 

 Perigonial leaf. 5. Peristome. 6, 7. Capsules. 8. Perichaeth. 9, 9. Stem leaves. 10, 10. Perichaetial 

 leaves. 11. Cross sections of the same. 12, 13. Portions of the leaf showing the reticulation. All except 

 fig. 1, 2, magnified. 



6. HYPNUM OREGANUM (sp. nov.): dioicum; caule prostrato parce ramoso ; ramis dense 



pinnatis ; foliis e basi lata cordata ovato-longe-acuminatis serrulatis striatis nitidulis 

 tenuissime areolatis, costa sub apice dissoluta ; capsula in pedicello muriculato 

 oblonga cernua annulata ; operculo conico longe rostrato. 



