10 
MUSCI APPALACHIAN!. 
42. Andraea petrophila. 
Ehrh. — Bnjol. Europ. VI. t. G23. — A. rupestris, 
Hedw. 
Hab. On steep dr_v rocks and boulders near Closter and Sparta, New 
Jersey. On Sliawangunk Mountain ai^d at Little Falls, &c., New 
York. 
43. Andrsea rupestris. 
Turner. — Bryol. Europ. YI. t. 631. — A. • Rotliii, 
Weh. et Mohr. 
Hab. On wet rocks near Suffern and Ramnpo and on Shawangunk 
Mountain, New York ; also at the Delaware Water-Gap, New Jersey. 
44. Archidium Ohioense. 
Bryol. Europ. — Sulliv. Icon. Muse. p. 10, t. 7, excl. 
calyptrce figg. 
Calyptra minutissiina, basi paullulum expansa cito 
I'upta sublaceraque, ad capsulae basin dejecta et a 
vaginula liaud toto soluta ; stylo longiusculo. 
Hab. Thin soil on rocks, New Jersey, New York, and Pennsylvania ; 
also in damp meadows, Ohio, Sulliv., Lesqx. Illinois, Bdib. 
MICROMITRIUM, (n. gen.) 
Capsula globosa, immersa, tenera, apiculata vel mutica, 
clausa, vel pressa in medio horizontaliter latiscens, 
brevissime pedicellata vel exacte sessilis. Calyptra 
minima, subdiscifbrmis, stylidif'era, arete adluurens. 
Flores synoici. — Plantae minuti.ssim;u in protliallio 
bysoideo diu persistente sed inconspicuo nidulantes, 
foliis ecostatis laxissime areolatis : Ephemera valde 
refeventes distinctaa tamen calyptra; forma et mi- 
nutie ; inflorescentia, etc. 
45. Micromitrium Austini. 
(^Sulliv. ^ Amt. — Subacaule ; foliis patenti-recurvis 
ligulato-lanceolatis snperne distincte serratis ; cap- 
sula apiculata brevissime pedicellata ; calyptra con- 
