Status: Native
Synonyms:
Marchantia pilosa Hornem.
Grimaldia pilosa (Hornem.) Lindb.
Neesiella pilosa (Hornem.) Schiffn.
Mannia pilosa is a complex thallous liverwort with purple scales underneath that have appendages
which are usually 2-3 seriate at the base and uniseriate at the apex. The cross section of the thallus
shows about 2/3 of the thickness at the center of the thallous to be aerenchyma (parenchyma with
air spaces). The aerenchyma layer in M. sibirica is thinner, closer to 1/2 of the width of the
thallous at the center, and the individual air spaces are noticably smaller. Mannia sibirica is very
similar to M. pilosa and was at one time considered to be a variety of that species.
Please click on an image for a larger file.
Mannia pilosa, collected and identified by J. Michener, Alaska, Kantishna, along Eldorado Creek, July 30, 1963; photos by Russ Kleinman and Karen Blisard February 22, 2023
Mannia pilosa, scale appendage, collected and identified by J. Michener, Alaska, Kantishna, along Eldorado Creek, July 30, 1963; photos by Russ Kleinman and Karen Blisard February 22, 2023
Mannia pilosa, carpocephalum, collected and identified by J. Michener, Alaska, Kantishna, along Eldorado Creek, July 30, 1963; photos by Russ Kleinman and Karen Blisard February 22, 2023
Mannia pilosa, cross section of thallus, collected and identified by J. Michener, Alaska, Kantishna, along Eldorado Creek, July 30, 1963; photos by Russ Kleinman and Karen Blisard February 22, 2023
Mannia pilosa, cross section of thallus, collected and identified by J. Michener, Alaska, Kantishna, along Eldorado Creek, July 30, 1963; photos by Russ Kleinman and Karen Blisard February 22, 2023
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