. A manual of the medical botany of North America [microform]. Botany, Medical; Botany; Botanique médicale; Botanique. Fig. 70.—DifTercnt forms of pollen. MnRiiiflod. many of our common species the fruit often contains abortive or imperfect seeds. Pea-pods, for example, ai'o often seen with only a single perfect seed ; and ears of Indian corn with half the kernels imperfect are exceed, ingly common. In these instances and in all others of like character the ovules, r(>presented by the imperfect se(;ds, have failed to be reached by the fertilizing pollen-tube. Not unfrequently, also, dicjeci
. A manual of the medical botany of North America [microform]. Botany, Medical; Botany; Botanique médicale; Botanique. Fig. 70.—DifTercnt forms of pollen. MnRiiiflod. many of our common species the fruit often contains abortive or imperfect seeds. Pea-pods, for example, ai'o often seen with only a single perfect seed ; and ears of Indian corn with half the kernels imperfect are exceed, ingly common. In these instances and in all others of like character the ovules, r(>presented by the imperfect se(;ds, have failed to be reached by the fertilizing pollen-tube. Not unfrequently, also, dicjecious plants, 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 Johnson, Laurence, 1845-1893. New York : W. Wood
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Keywords: ., boo, bookcentury1800, booksubjectbotany, booksubjectbotanymedical
