Guide to Liverworts of Oregon: Solenostoma hyalinum (Lyell) Mitt.
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Synonym: Jungermannia hyalina Lyell in Hook.; Plectocolea hyalina (Lyell) Mitt.
Special Status: None.
Recognition: Reddish rhizoids, dioicous, short, crumply-plicate perianth.
Distribution: On soil in mountains, close to water; rare. Reported by W.B. Schofield from Saddle Mountain. Found along Thielsen Creek in Douglas County (DHW m2540), also on shore of Fawn Lake, Klamath County (DHW m2416).
Comments: Taxonomy of specimens placed here needs further work. Bakalin (2016) has placed the species with a short, plicate perianth in Plectocolea while Stotler and Crandall-Stotler (2017) prefer Solenostoma. I recommend the key in Doyle and Stotler (2006) as a current source for recognizing sterile plants. They mention the leaves tend to be long decurrent dorsally while Bakalin describes them as dorsally barely decurrent. The specimens of sterile shoots illustrated here show well developed decurrencies. The median leaf cells average around 60 µm in the Oregon Cascade material while Bakalin's description says less than 50 µm.
Jungermannia hyalina Young male shoot. Thielson Creek, Douglas County, Oregon, DHW m2540.
Jungermannia hyalina Old perianth. Thielson Creek, Douglas County, Oregon, DHW m2540.
Jungermannia hyalina Oil bodies in midleaf cells. Thielson Creek, Douglas County, Oregon, DHW m2540.
Jungermannia hyalina -- Shoot, dorsal aspect. Fawn Lake, Klamath County, Oregon, DHW m2416.
Jungermannia hyalina -- Shoot, dorsal aspect showing leaf insertion. Fawn Lake, Klamath County, Oregon, DHW m2416.
Jungermannia hyalina -- Shoot, side aspect. Fawn Lake, Klamath County, Oregon, DHW m2416.
Jungermannia hyalina -- Shoot, ventral leaf insertion. Fawn Lake, Klamath County, Oregon, DHW m2416.
Jungermannia hyalina -- Midleaf cells with oil bodies. Fawn Lake, Klamath County, Oregon, DHW m2416.
Jungermannia hyalina -- Cells of leaf margin showing oil bodies. Fawn Lake, Klamath County, Oregon, DHW m2416.
Jungermannia hyalina -- Shoot, dorsal aspect showing leaf insertion. Opal Creek, Marion County, Oregon, DHW m2131.
Jungermannia hyalina -- Shoot, dorsal aspect showing leaf insertion. Opal Creek, Marion County, Oregon, DHW m2131.
Jungermannia hyalina -- Shoot, dorsal aspect leaf base decurrency. Opal Creek, Marion County, Oregon, DHW m2131.
Jungermannia hyalina -- Median leaf cells showing oil bodies. Opal Creek, Marion County, Oregon, DHW m2131.
Jungermannia hyalina -- Median leaf cells showing oil bodies. Opal Creek, Marion County, Oregon, DHW m2131.
Jungermannia hyalina -- Median leaf cells showing oil bodies. Opal Creek, Marion County, Oregon, DHW m2131.
Jungermannia hyalina -- Median leaf cells showing oil bodies. Opal Creek, Marion County, Oregon, DHW m2131.
Copyright 2006 Northwest Botanical Institute