FIGURE 33. A–F in Spore morphology of Selaginella (Selaginellaceae) from China and its systematic significance

FIGURE 33. A–F. Spore morphology of Selaginella gebaueriana (A–D. Megaspores, E–G. Microspores). G–L. S. moellendorffii (G–J. Megaspores, K–L. Microspores).—A, E, G. Proximal surfaces.—C, I. Distal surfaces.—H. Lateral surface.—F, K, L. Tetrads.—B, D, J. Portions of surfaces enlarged to show infrastructural detail (B, J. Proximal surfaces; D. Distal surface). Scale bars = 100 µm (A, C, G, H & I), 50 µm (B, J); 20 µm (E, F, K & L), 10 µm (D).