Riccia lamellosa

Phylum: Marchantiophyta

Family: Ricciaceae

Genus: Riccia

Common Name	None
Frequency	Rare

Image Gallery Distinguishing Features Similar Species Habitats Associated Species Distribution Map Relevant Literature

Image Gallery

Distinguishing Features

A rare species thus far known only from sloping and seasonally saturated fine sediments over rock, R. lamellosa appears as small (~5mm) thalli with a smooth upper surface, v-shaped tips on a whitish-green plant. Close inspection reveals a series of thin pale flaps (“lamellae”) that fringe the edges of the plant.

Similar species

No other species of Riccia has the overlapping scales of pale tissue along the margin (though be sure to separate from the colourless flaps sometimes present in R. sorocarpa), making this plant unmistakeable compared to others in the genus.

Habitat

Fine, seasonally-saturated mineral soils over sloping rock at low elevation.

Associated species

Riccia sorocarpa, Fossombronia longiseta, Anthoceros fusiformis, Pleuridium acuminatum, Cephaloziella divaricata

Distribution Map

Relevant Literature

Godfrey, J.D. (1977). Hepaticae and Anthocerotae of southwestern British Columbia . [Doctoral dissertation, University of British Columbia]. UBC cIRcle.
Hong, W. S. (2007). Scapania. In Flora of North America Editorial Committee (Eds.), Flora of North America North of Mexico (Vol. 3) . Oxford University Press.
Wagner, D. H. (2013). Guide to the liverworts of Oregon: Scapania undulata . Oregon State University Herbarium.