Yale University Herbarium

YU-220359

150. Riccia tenuis, Aust.

Fronde nitida tenuissima cavernosa fibroso-nervosa olivaceo-
vel velutino-viridi, laciniis rotundo-obovatis planis mar-
gine sinuato-lobulatis, subtus concoloribus obsolete
squamosis ob costam tenuem anguste carinatis, sporangiis
parvis depresso-globosis 2-4 agregatis in nervo sitis in
pagina inferiore protuberantibus sed in neutra prorum-
pentibus, calyptra tenuissima cum stylo brevissimo oblongo
apice præmorso (haud dilatato) coronata, sporis parvis
globosis subovalibusve (haud angularibus) nigro-fuscis
valde muricatis. — *Proc. Acad. Nat. Sci. Phila. Dec.*
1869, p. 233.

HAB. Wet broken ground, margin of woods, near Closter,
New Jersey; also near Lawrence, James.