File:I 244 - Vertical sections of conceptacles of Gracilaria armata, Grinnelia americana, and Corallina officinalis.jpg
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I_244_-_Vertical_sections_of_conceptacles_of_Gracilaria_armata,_Grinnelia_americana,_and_Corallina_officinalis.jpg (300 × 308 pixels, file size: 27 KB, MIME type: image/jpeg)