94 



HORSETAILS AND CLUB MOSSES 



only the upper leaves bear sporangia and in some species 

 the sporophylls form a strobilus at the end of the stem. 

 Sporophylls arranged in strobili do not have chlorophyll, 



FIG. 53. Lycopodium. 1, Hair-like projection; 2, reticulate surface; 3, char- 

 acteristic "marking of the spore. 



