A COMPARATIVE STUDY OF WINTER AND SUMMER LEAVES OF VARIOUS HERBS
A Comparative Study on Winter and Summer Leaves of Various Herbs – The structure of most plants varies with the habitat and even with the varying conditions of the same habitat.
This has been emphasized by Grevillius,’ Chermezon,2 Cowles,3 Starr,4 and others. Grevillius made an extensive comparative study of vegetation growing on the island Oland. He compared the plants of a dry, rocky, treeless plain (alvar) with the same species growing.
In favorable regions. The former he calls alvar forms; the latter, normal forms.
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