536 Sykes and Stiles .— The Cones of the Genus Selaginella. 
Fig. 10, b and c. Two sporophylls of S.flabellata in side view, r — dorsal projection, x 20. 
Fig. 10 d. Lowest sporophyll of cone, showing minute dorsal projection. 
Fig. 10 d\ Section of sporophyll of S. flabellata, showing dorsal projection containing air cavity, 
and rows of lignified cells in sporangium stalk. 
Fig. 11 a. Sporophyll of .S’, caulescens, side view, x 10. 
Fig. 11 b. Ditto, back view, x 20. 
Fig. 12. Sporophyll of S. Vogelii. x 10. 
Fig. 13 a. End of a fertile branch of S. cipus , var. clegans. The cone contained only two fertile 
microsporangia and abortive sporangia, x 10. 
Fig. 13 Ditto, bearing one megasporangium only and some abortive sporangia, x 10. 
Fig. 13, c and d. Spores from megasporangia of S. apus, var. elegans. 
Fig. 13^. View of sporophyll of ditto from above, showing longitudinal median dorsal ridge 
(m). x 20. 
