Tritomaria exsecta

Phylum: Marchantiophyta

Family: Scapaniaceae

Genus: Tritomaria

Scientific Name: Tritomaria exsecta (Schmidel) Schiffn. ex Loeske

Tropicos BFNA

Synonyms: Anastrophyllum striolatum (Horik.) N. Kitag., Diplophyllum exsectum (Schmidel) Thér. & Mong., Jungermannia donniana Hook., Jungermannia exsecta Schmidel, Jungermannia exserta H. Schmidt ex Link, Jungermannia trilobata Steph., Lophozia exsecta (Schmidel) Dumort., Scapania exsecta (Schmidel) Austin, Sphenolobus exsectus (Schmidel) Steph., Sphenolobus striolatus Horik., Tritomaria exsecta fo. simplex S. Hatt.

Common Name

Cut Nutchwort

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

Image Gallery

iNaturalist

Distinguishing Features

Asymmetrically 3-lobed leaves that are longer than wide and frequently crowned in clusters of bright-red gemmae are a good indicator of Tritomaria exsecta. The leaf apices are acute, underleaves are absent and the gemmae, when examined under a microscope, are smooth. These plants typically rest horizontally against the tree trunks and decaying organic matter that they call home, with golden green shoots up to 2 cm long and 2 mm wide.

Similar species

See table for comparison to other species of Tritomaria and Trilophozia. This species can only be distingushed from the exceedingly similair T. exsectiformis by examining the gemmae under the microscope. In that species, the gemmae are angular, while in T. exsecta they are smooth.

Habitat

Associated species

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.