141. Riccia arvensis, Aust.

Fronde solida pluries divisa obscure viridi, lobis elliptico-
linearibus dichotomis obsolete emarginatis late sulcatis
margine elevatis acutis (perspicue incrassatis) minute
ciliatis, subtus nudo plerumque concoloribus valde ob-
tuseque incrassato-carinatis ob sporangia nodosis, sporis
angularibus fusco-atris submuricatis.— *Proc. Acad. Nat.*
*Sci. Phila. Dec. 1869, p. 232.*

HAB. Wet broken ground in cultivated fields, &c., about
Closter, New Jersey; frequent.

Yale University Herbarium

YU.220063

Riccia bifurca G. F. Hoffmann

Det. A.T. Whittemore, 2000

Missouri Botanical Garden Herbarium (MO)

L.
ION.