Penium spinulosum (Wolle) Gerrath
Reference: Wolle 1881
Synonym: Docidium spinulosum Wolle, Pleurotaenium spinulosum (Wolle) Brunel
Remarks: North American endemic. I seems that this species does not have girdle bands like the other Penium species. The reticulated structure that can be seen in the last picture, is actually the outer cell wall.
C0333
2017065001
2017065-001
Front view
USA (WA)
Sample Robin Matthews
C0333
2017065001
2017065-001
Front view
USA (WA)
Sample Robin Matthews
C1000
2016037055
2016037-055
Detail
USA (WA)
Sample Robin Matthews
All photos copyright: © 2009-2020 Alfred van Geest - Send comments to asvg@xs4all.nl