Elementary botany (1898) Elementary botany elementarybotany00atki Year: 1898 342 ECOLOG V. divisions of the pinnae, are inrolled into little spherical masses which lie close on the side of the pinnae. If we unroll one of these pinnules we find that there are several fruit dots within protected by this roll. In fact when the spores are mature these Fig. 446. 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 sma
Elementary botany (1898) Elementary botany elementarybotany00atki Year: 1898 342 ECOLOG V. divisions of the pinnae, are inrolled into little spherical masses which lie close on the side of the pinnae. If we unroll one of these pinnules we find that there are several fruit dots within protected by this roll. In fact when the spores are mature these Fig. 446. 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 with 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
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