4 (58) CONTRIBUTIONS TO THE BRYOLOGY 



caulis sensim majora ; floralia 4-6, erecto-patentia, longissime acu- 

 minata, acumine diaphano flexuoso subserrulato. Flores dioeci, 

 in caule primario vel in innovationibus e summitate progredientibus 

 terminales: uterque flos diphyllus ; archegonia 8-12 stylo longis- 

 simo instructa, stigmate magno dilatato; antheridia 10-14, elonga 

 to-fusiformia, brevissime stipitata ; paraphyses haud numerosae, te- 

 nerrima?, genitalibus utriusque sexus immixtse, atque in foliorum 

 superiorum gremio per paria nidulantes. Folia perichaetialia et pe- 

 rigonialia floralibus similia, sed paulo majora. 



It grows in large patches, pendent from the perpendicular faces of 

 sandstone rocks, in moist, shady places, six or eight miles south of 

 Lancaster, Ohio. 



TAB. I. Fig. 1. Plants of the natural size. Fig. 2. The same, mag- 

 nified. Figs. 3, 4. Apices of cauline leaves. Figs. 5, 13, 14. Transverse 

 sections of the leaf. Fig. 6. Cauline leaf. Fig. 7. Perichaetial leaf. Fig. 

 8. Archegonia and paraphyses. Fig. 9. Perichaetial leaves inclosing arche- 

 gonia. Fig. 10. Antheridia and paraphyses. Fig. 11. Perigonial leaves in- 

 closing antheridia. Fig. 12. Part of the stem. Magnified. 



2. FISSIDENS MINUTULUS, Sulliv. Muse. Alleghan. n. 183. 



Planta e perpusillis gentis, vitam annuam degens. Caules sim- 

 plices, assurgentes, circiter sesquilineales, basi radiculosae, dense gre- 

 garise, sed nunquam inter se radiculis intertexta?. Folia erecto- 

 patentia, 4- 8-juga; inferiora minuta, remota, subsquamiformia; su- 

 periora in ascendendo magis magisque majora, oblique lineari-lance- 

 olata, acuta, fere ad medium usque conduplicata ; lamina apiciali 

 subrepanda plus minus limbata ; limbo haud incrassato e cellulis 

 elongato-fusiformibus diaphanis conflato ; costa pellucida, in apice 

 evanescente percursa, rotundato-hexagone areolata. Flores dioeci, 



