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The Origin of Floral Structures Through Insects and Other Agencies
Vista completa - 1888
adaptation to insect adhesion androecium anemophilous anthers appear arrested atrophy Autogamy axial axis bear become bracts calyx capsules carpellary carpels cause cells chorisis cleistogamous cohesion colour condition corolla correlated crossed cylinder Darwin degeneracy degradation described diclinism differentiated dorsal Edition epidermis fact female flowers fertile fertilisation fibro-vascular cords filaments five floral whorls florets foliaceous Forms of Flowers genera genus growth hereditary hermaphrodite heterostyled honey hypertrophy Illustrations insect agency insects instances intercrossing irregular flowers irritation Journ Labiatce latter leaf leaves long-styled form marginal Miiller nectaries normally observed occur Orchids organs origin ovules pedicel Pelargonium perianth petaline petals petioles phyllotaxis pistil placentas pollen pollen-tubes position posterior Primula produced protandrous protogynous protoplasm Ranunculus receptacular tube regard remarks result seedlings seeds seen self-fertilisation self-fertilised plants sepaline sepals side Small crown 8vo species spiral stamens stigmas structure style superposed Teratology Tieghem tion usually visited weight whorls zygomorphic
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