FIGURE 23. A–D in Spore morphology of Selaginella (Selaginellaceae) from China and its systematic significance

FIGURE 23. A–D. Spore morphology of Selaginella picta f. viridis (A–C. Megaspores, D. Microspore). E–H. S. picta f. picta (E–G. Megaspores, H. Microspore). I–L. S. delicatula (I–J. Megaspores, K–L. Microspores).—A, D, E, H, I, K. Proximal surfaces.—L. Distal surface.—B, C, F, G, J. Portions of proximal surface enlarged to show infrastructural detail. Scale bars = 100 µm (A, E, I); 50 µm (B, F), 20 µm (D, H, K & L), 10 µm (C, G, J).