FIGURES 1–12 in Punctastriata altera sp. nov. (Bacillariophyta, Fragilariophyceae), a diatom from the United States of America

FIGURES 1–12. Punctastriata altera sp. nov. from type material from the Cosumnes River, Sacramento County, U.S.A., ANSP G.C. 106796a. 1–8 LM images, Fig. 3 is the holotype. 9–12. SEM images. 9, 10. Outer valve views showing details of axial area, striation pattern, spine position, consistent apical depression (white arrows), and apical pore fields on both valve ends (black arrows). 11. Valve interior showing axial area, troughs harboring the striae, and apical pore fields on both valve extremes (black arrows). 12. Girdle view of frustule showing details of valve mantle, consistent apical step (white arrows) and girdle bands. Notice curved valvocopulae ends (near white arrows) suggesting they are open from this side view. Scale bars = 10 µm (Figs 1–8), 5 µm (Figs 9–12).