On turning from Foliar expansions, to stems and roots, facts of like meaning meet us.
"Essays: Scientific, Political, & Speculative, Vol. I"
Herbert Spencer
In such cases the injury done by a few centres of infection is very slight, but prolonged action may bring into play secondary effects such as the gradual destruction of the cambium round a branch, when, of course, the effect of ringing results; or if the fungus becomes epidemic and myriads of leaf-spots are formed, the destruction of Foliar tissue, gradual taxing of the assimilatory cells, etc.
"Disease in Plants"
H. Marshall Ward
Wounds on leaves imply loss of Foliar surface-i.
"Disease in Plants"
H. Marshall Ward