Guide to Liverworts of Oregon: Key to Tritomaria 2
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Tritomaria 1b gemmae frequent, leaves not undulate > Tritomaria 2
Tritomaria exsecta, lobe tips with gemmae. Crane Creek watershed, Grant County. A.Hardman 6000.
2a Gemmae ellipsoid, 12-19 µm long; cells in middle of leaf 12-18 µm wide
Tritomaria exsecta
Tritomaria exsectiformis, angular gemmae. NW of Sisters, Jefferson County, Oregon. D.H. Wagner 7431.
2b Gemmae obtusely angled; 16-28 µm long; cells of leaf 17-32 µm wide
Tritomaria exsectiformis