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. 2024 Oct 22;248:59–71. doi: 10.3897/phytokeys.248.135034

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Sung Min An, Jihoon Kim, Kichul Cho, Hyun-Ju Hwang

This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Figure 2. — A–H Light microscopy photomicrographs of H.hampyeongensisI–P scanning electron microscopy photomicrographs of H.hampyeongensisI external valve view, with central area (asterisk) and dorsal raphe ledge (arrow) J internal view of a valve K detail of a valve externally showing siliceous outgrowths (arrows) on the margin of the raphe ledge, central area (asterisk), and proximal raphe endings (arrowheads) L detail of external valve apex showing the dorsally bent distal raphe ending (arrow) M biseriate striae (arrows) in several rows under the raphe ledge N detail of areolae on the dorsal side internally occluded by hymenes (arrows) and tongue-like proximal helictoglossae (double asterisk) O detail of internal valve apex showing poorly developed distal helictoglossae (arrow) P girdle bands with two rows of poroids (arrows). Scale bars: 10 μm (A–H); 5 μm (I, J); 1 μm (K–M, O, P); 0.5 μm (N).