Penium spinulosum (Wolle) Gerrath
Reference: Wolle 1881
Synonym: Docidium spinulosum Wolle, Pleurotaenium spinulosum (Wolle) Brunel
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.
2017065-001 Front view USA (WA) Sample Robin Matthews |
2017065-001 Front view USA (WA) Sample Robin Matthews |
2016037-055 Detail USA (WA) Sample Robin Matthews |