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Guide to Staurophora columbiana

Bahls 2013

Staurophora Columbiana Guide
Credit: Loren Bahls
  1. Valves linear-lanceolate to elliptic-lanceolate
  2. Central area small

Valves are linear-lanceolate to elliptic-lanceolate, 35-54 µm long. The central area is small (except in Janus valves) and lacks a distinct transverse fascia.