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IMAGE OF

Psammothidium helveticum

(Hust.) Bukht. and Round 2007      Category: Monoraphid
BASIONYM: Achnanthes austriaca var. helvetica

Psammothidium harveyi

 

Psammothidium lacustre

LM scalebar = 10 ┬Ám

Slide Number: ANSP GC106251a

Site ID: USGS NECB0802ADE0004BA

Site Name: STILLWATER RIVER NEAR STERLING, MA

Latitude: 42.4108

Longitude: -71.7917

Caption: raphe valve

Contributor: Marina Potapova - May 2010