GROUP B1 Guide to Liverworts of Oregon: Key to Genera 63
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)
Copyright 2006 Northwest Botanical Institute