Guide to Liverworts of Oregon: Key to Genera 2
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1a plants thallose > 2
Anthoceros fusiformis - Left: Cave Creek, Josephine Co., Oregon, DHW m1188. Right: Santiam Highway, Linn Co., Oregon, DHW m2686.
2a Cells each with a single large chloroplast; sporophytes cylindrical, growing from the base and
maturing gradually from the top down, eventually splitting vertically into two twisted, thread-like valves.
Anthocerotophyta. See "Hornworts of Oregon." It is a separate document and is not included in this guide to liverworts. It may be found on my fernzenmosses.com website.
Riccardia palmata, Jack Creek, Jefferson Co., Oregon. DHW 7415.
2b Cells with many chloroplasts; sporophytes with ovoid capsules, the contents maturing at one time.
(Couplet 62)