FIGURE 2. A–F in Spore morphology of Selaginella (Selaginellaceae) from China and its systematic significance

FIGURE 2. A–F. Spore morphology of Selaginella rossii (A–D. Megaspores, E–G. Microspores). G–L. S. albocincta (G–J. Megaspores, K–L. Microspores).—A, E, H, K, Proximal surfaces.—C, I. Distal surfaces.—B, G. Lateral surfaces.—F, L. Tetrads.—D. Portion of distal surface enlarged to show infrastructural detail;—J. Cross section of exospore. Scale bars = 100 µm (A, B, C, G, H & I), 20 µm (E, F, K & L), 10 µm (D, J).