ICONKS MUSCORUM. 55 



OLIGOTIUCHUM ALIGERUM, Mitten. 



Tab. 39. 



Plants gregarise vel laxe ca^spitosse, nigricantes, versus basim 

 radicantes. 



Caulis pollicaris, erectus, subflexuosus, gracilis. 



Folia patula, celliilis quadrato-rotundatis distinctis viridiljiis 

 areolata, a basi pauhilum latiore brevi-oblonga la3vi iiitegerrima 

 lanceolata, obtusiuscula, brevi-dentata, dorso lamellis dcntatis 

 longitudinalibus alata ; nervo percurrente lamcllato, etiam 

 lamellis circiter quinis dentatis carinata ; folia pericliaitialia caiili- 

 naque pericliaetiuni versus e basi obovata vaginaute erecta, cellulis 

 elongatis pellucidis areolata, subulata, angustiora, caeterum cauli- 

 nis similia. 



Flores dioici : plantag masculae breviores, e floris centro pro- 

 lificantes. 



Capsula in pedicello elongate subflexuoso cylindracca, inferne 

 ventricosa, subcurvata, papillosa, peristomii dentibus e membra- 

 na valde emersa oriundis ; calyptra apice pilis paucis hirta. 



OLiGOTRicnuM ALiGKRUM, Mitten in Proc. Linn. Soc. 8, p. 48. 

 Hab. Grande Cote, Rocky Mountains, Drummond. 



In size and general appearance this is like 0. Hercynicum ; 

 but the leaves are narrower and more crisped when dry. Tiie 

 presence of the lamellas on the under side of the leaf itself, as 

 well as upon both sides of the nerve, is remarkable and peculiar. 



TAB. 39. — Oligotrichum aligerum. 



1. Plantae masculae et femineaj nalu- 7, 8. Capsulse. 



rali magnitudine. 9,10. Peristomium ; membrana et 



2. Planta feminea. denies ejusdem. 



3. Planta mascula. 11. Calyptra. 



4. Folia. 12. Flos feraineus, folium perigoniale, 



5. Eorumdem sectio transvei'Srtlis. antheridiuni, et paraphysis. 



6. Areolatio folii cum lamellis. 13. Folium perigoniale. 



