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scheme. Among the structures studied, chief emphasis was laid upon reproductive structures, so that the^up-ito-date^botany of that decade might well be spoken of as the morphology of reproductive structures. In the use of this material for reaching, the so-called method of "types" was developed. A very few plants, fondly supposed to be "representative" and known to be common, were selected and given an exhaustive examination. Each plant was crossquestioned until questions failed; and ,thedoi:10.1111/j.1949-8594.1911.tb03525.x fatcat:66u6f6onybdazgu5ar7vte7hoq