Observation 93410: Leptogium palmatum (Hudson) Mont.

with Hypnum subimponens, on near vertical rock above the river, Elwha River valley

McCune and Geiser (2009) note “The role of this species as a soil-stabilizing and nitrogen-fixing pioneer on abused soil and not been fully appreciated. Most pimple do not look carefully at the blackish gelatinous growths so common along gravel roads and roadcuts w Cas. This blackish material is usually L. palmatum and, in some cases, non-lichenized Nostoc. The latter can be lobed but is relatively amorphous and jelly-like.”

Species Lists


wet, has dried a bit
section of thallus
from Schneider’s “A Text-Book of General Lichenology” (1897) – this old book has wonderful illustrations

Proposed Names

83% (1)
Eye3 Eyes3
Recognized by sight: very common
Used references: Smith, C.W., Aptroot, A., Coppins, B.J., Fletcher, A., Gilbert, O.L., James, P.W. and Wolseley, P.A. (2009) The Lichens of Great Britain and Ireland
Based on microscopic features: see photos (spore ave. 38×15)

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
old book
By: Richard Droker (wanderflechten)
2012-05-01 20:22:28 CEST (+0200)

Two or three years ago I was quite surprised to find a copy for something like $25 through AbeBooks. Presently I see one old copy for $78.75 and many offers for inexpensive print on demand versions.

Great stuff
By: Jason Hollinger (jason)
2012-04-27 20:40:34 CEST (+0200)

Interesting comments, and great illustration. 1897?? Must be hard to come by that book? I’m guessing there are no copyright issues after over a century? :)

Created: 2012-04-27 17:39:01 CEST (+0200)
Last modified: 2012-04-27 17:48:52 CEST (+0200)
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