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adopted aestivation affinities Agassiz Alphonse De Candolle American Journal antheridia appears arctic Batatas beans Bentham blossoms botanists botany called Candolle Candolle's carpels cells chapter characters cited common corolla cotyledons cross-fertilization crossing Cucurbita cultivated Darwin Decaisne described Dicotyledons distinct distribution edition embryo English Europe fact fertilization Flora flowers forms fruit Genera Plantarum genus geographical gourd groups grow hermaphrodite Hooker hybrid Indians insects internode Journal of Science Jussieu known Latin latter leaves less Linnaean Linnaeus maize mentioned monograph movement natural naturalists nearly nomenclature North America observations organs origin ovary ovule pears perianth petals petioles phyllotaxis plants pollen present probably Prodromus Professor published Pyrus radicle referred remarks respects revolving root Science and Arts seeds self-fertilized shoot species specific names specimens spores squashes stamens stem stigma structure synonymy systematic tendrils tion trees tribe twining varieties volume voyage Welwitschia
Page 140 - Every species has come into existence coincident both in time and space with a preexisting closely allied species," Connects together and renders intelligible a vast number of independent and hitherto unexplained facts.
Page 309 - It is hardly an exaggeration to say that the tip of the radicle thus endowed, and having the power of directing the movements of the adjoining parts, acts like the brain of one of the lower animals ; the brain being seated within the anterior end of the body, receiving impressions from the sense organs, and directing the several movements
Page 1 - A NATURAL SYSTEM OF BOTANY; or, a Systematic View of the Organization, Natural Affinities, and Geographical Distribution of the whole Vegetable Kingdom : together with the Uses of the most important Species in Medicine, the Arts, &c.
Page 204 - Reports — on the Fishes, Reptiles, and Birds; the Herbaceous Plants and Quadrupeds; the Insects Injurious to Vegetation ; and the Invertebrate Animals of Massachusetts. Published agreeably to an Order of the Legislature, by the Commissioners on the Zoological and Botanical Survey of the State.
Page 242 - ... on the different forms of flowers on plants of the same species, were mainly based on his own quiet work in the greenhouse and garden at Down. His volumes on the descent of man, and on the expression of the emotions in man and animals, completed his contributions to the biological argument. . His last volume, published the year before his death, treated of the formation...
Page 44 - We submit, therefore, that § 10. A name should be changed which has before been proposed for some other genus in zoology or botany, or for some other species in the same genus, when still retained for such genus or species.
Page 226 - ... plants; but the mere fact of more than half of them being sterile within the specified degree, when insects are excluded, is a striking one; for whenever pollen has to be carried from the anthers to the stigma in order to ensure full fertility, there is at least a good chance of cross-fertilization.
Page 50 - ... that of the vegetable kingdom. It is of the greatest importance that we should be able to thread our way back through entangled synonymy and mistaken references to the original sources. Here our difficulties would be greatly multiplied, unless two sorts of synonyms are used. For who, as Mr. Agassiz says, can find out what...