GROUP B1

Guide to Liverworts of Oregon: Key to Genera 63

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1a plants thallose > 2b chloroplasts numerous > 62a thallus tissue homogeneous > 63


Left: Sphaerocarpos texanus, Lane Co., Oregon. DHW m1511a; right: Riccia sorocarpa, Lane Co., Oregon.


63a Thallus in small mounds, rosettes, or short, bifurcating pads; capsules sessile or embedded in thallus
(Couplet 64)


(Riccardia palmata, Coos Co., Oregon. DHW 9369)


63b Thallus ribbon like, often much branched with irregular or pinnate branches; capsules exserted on a long seta
(Couplet 65)


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Copyright 2006 Northwest Botanical Institute