Guide to Liverworts of Oregon: Solenostoma fusiforme (Steph.) R.M. Schust.
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Synonym: Jungermannia fusiformis (Steph.) Steph. Protosolenostoma fusiforme (Steph.) Bakalin et Vilnet
Misapplied: Metasolenostoma orientale Bakalin et Vilnet. A specimen from California, illustrated below (Brinda 2836), is cited as a paratype of this species (Bakalin, V.A., A. Vilnet, T. Furuki, & T. Katagiri 2014).
Two other specimens cited as paratypes of Metasolenostoma orientale are referred to Solenostoma rubrum (Halse 5408) or Jungermannia atrovirens (Wagner 1159), also illustrated by photomicrographs.
Special Status: Possible candidate for sensitive species status; only recently located in Oregon. Only a few sites are known.
Recognition: Strictly aquatic on rocks in small streams; leaves ovate, nearly transversely inserted, bright green, often with reddish tinge; marginal cells usually differentiated by dark but not thickened walls; oil bodies few, fusiform. 3X chloroplasts, 2 (3) per cell, mostly subbotryoidal, of small spherules.
Distribution: On rocks in streams at high elevations.
Comments: The leaf shape and large size distinguishes this from most other aquatic or amphibious species of Jungermannia. The closest look alike is Jungermannia exsertifolia, which has darker leaves tending to be widest near the base and rounded triangular.
This plant is not known to have reproductive organs in western North America records. Because traditional keys like these are based on features of reproductive organs, it cannot be keyed out easily. It must first be learned from studying the pictures, which is not hard to do.
Black Creek, Waldo Wilderness, Lane Co., Oregon. DHW m2694.
Oil bodies, Black Creek, Waldo Wilderness, Lane Co., Oregon. DHW m2694.
Oil bodies, Black Creek, Waldo Wilderness, Lane Co., Oregon. DHW m2694.
Oil bodies, Black Creek, Waldo Wilderness, Lane Co., Oregon. DHW m2694.
Dorsal aspect, Opal Creek, Marion County, Oregon. DHW 2568.
Ventral aspect, Opal Creek, Marion County, Oregon. DHW 2568.
Five leave, Opal Creek, Marion County, Oregon. DHW 2568.
Cuticular striations, Opal Creek, Marion County, Oregon. DHW 2568.
Oil bodies in median cells, Opal Creek, Marion County, Oregon. DHW 2568.
Oil bodies, Opal Creek, Marion County, Oregon. DHW 2568.
Leaf, Mt. Jefferson Wilderness, Marion County, Oregon. Glade 20-IX-19.
Oil bodies, Mt. Jefferson Wilderness, Marion County, Oregon. Glade 20-IX-19.
Shoot, dorsal aspect. Plumas County, California. Brinda 2836 (MO).
Shoot, lateral aspect. Plumas County, California. Brinda 2836 (MO).
Five leaves. Plumas County, California. Brinda 2836 (MO).
Copyright 2006 Northwest Botanical Institute