58 CONTRIBUTIONS TO THE BRYOLOGY 



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

 minata, acumine diaphano flexuoso subscrrulato. 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, eloiiga 

 to-fusiformia, brevissime stipitata; paraphjses baud numerosse, te- 

 nerrimae, genitalibus utriusque sexus immixtse, atque in fbliorum 

 supeiiorum gremio per paria nidulantes. Folia perichsetialia 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. Perichjetial 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, SuUiv. Muse. Alleghan. n. 183. 



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

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

 gariae, sed nunquam inter se radiculis intertextse. 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 baud incrassato e cellulis 

 elongato-fusiformibus diaphanis conflato ; costa pellucida, in apice 

 evanescente percursa, rotundato-hexagone areolata. Flores dioeci. 



