. Elementary botany. Botany. DIMORPHISM OF FERNS. 275 divisions of the pinnse, are inroUed into little spherical masses which lie close on the side of the pinna;. If we unroll one of these pinnules we find that there arc several fruit dots within protected by this roll. In fact when the spores are mature these. â V, 4 ' -^u^' Fig. 317- Sensitive fern; one fertile leaf nearly changed to vegetative leaf. pinnules open somewhat, so that the spores may be dissemi- nated. There is very little green color in these fertile leaves, and what green surface there is is very small compared ^\'ith that of
. Elementary botany. Botany. DIMORPHISM OF FERNS. 275 divisions of the pinnse, are inroUed into little spherical masses which lie close on the side of the pinna;. If we unroll one of these pinnules we find that there arc several fruit dots within protected by this roll. In fact when the spores are mature these. â V, 4 ' -^u^' Fig. 317- Sensitive fern; one fertile leaf nearly changed to vegetative leaf. pinnules open somewhat, so that the spores may be dissemi- nated. There is very little green color in these fertile leaves, and what green surface there is is very small compared ^\'ith that of the broad expanse of the sterile leaves. So here there is practi- cally a complete division of labor between these two kinds of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Atkinson, George Francis, 1854-1918. New York : H. Holt
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