Gymnomitrion corallioides

Gymnomitrion corallioides
Phylum: Marchantiophyta
Family: Gymnomitriaceae
Genus: Gymnomitrion
Common NameCoral Frostwort
FrequencyInfrequent
© Randal Mindell
iNaturalist

Distinguishing Features

One of the few liverworts to truly match its common name, G. coralloides presents as a lawn of densely compressed, pale whitish-green, rounded shoots to 2 cm tall by 2.5 mm wide not unlike a colony of tightly-packed corals in high elevation or high latitude areas. The leaves have two equal, rounded lobes and are tightly overlapping (“imbricate”). For confident identification, you should expect the shoots to be compressed, not round.

Similar species

The only other white-hued liverworts in the region belong to the genus Anthelia, which is an order of magnitude smaller. While A. julacea and A. juratzkana can occur in similair alpine environments and show tightly overlapping leaves, the leaves are deeply divided (more than 2/3rd their length) compare to species of Gymnomitrion, which are typically divided to about 1/3rd their length. See table for comparison to other regional species of Gymnomitrion.

Habitat

Dry to moist cliffs, rock outcrops, ledges, crevices, boulders, and tundra in the montane, subalpine, and alpine zones

Associated species

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Distribution Map

Relevant Literature