How To Use Tetramerous In A Sentence
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Would you not consider as a morphological difference the trimerous, tetramerous, etc., divisions of flowers, the ovules being erect or suspended, their attachment being parietal or placental, and even the shape of the seed when of no service to the plant.
More Letters of Charles Darwin — Volume 2
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In the common rue and some other plants, one flower, usually the central or terminal one, opens first, and has five sepals and petals, and five divisions to the ovarium; whilst all the other flowers on the plant are tetramerous.
VII. Miscellaneous Objections to the Theory of Natural Selection
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Would you not consider as a morphological difference the trimerous, tetramerous, etc., divisions of flowers, the ovules being erect or suspended, their attachment being parietal or placental, and even the shape of the seed when of no service to the plant.
More Letters of Charles Darwin — Volume 2
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In the British Adoxa the uppermost flower generally has two calyx-lobes with the other organs tetramerous, whilst the surrounding flowers generally have three calyx-lobes with the other organs pentamerous.
VII. Miscellaneous Objections to the Theory of Natural Selection
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tetramerous
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tetramerous
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The proximal aulacophore is polymerous, rather than tetramerous (as in most other stylophorans) and superficially similar to that of the earliest stylophoran, Ceratocystis.
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In the British Adoxa the uppermost flower generally has two calyx-lobes with the other organs tetramerous, whilst the surrounding flowers generally have three calyx-lobes with the other organs pentamerous.
VII. Miscellaneous Objections to the Theory of Natural Selection
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The stele is divided into three parts, the tetramerous proxistele closest to the theca tapering through the mesistele to the dimerous dististele furthest from the theca.
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Thus trimerous fuchsias and tetramerous jasmines may frequently be met with, and Turpin describes a tetramerous flower of _Cobæa scandens_.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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The proximal aulacophore is polymerous, rather than tetramerous (as in most other stylophorans) and superficially similar to that of the earliest stylophoran, Ceratocystis.
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= -- An increased number of stamens frequently accompanies the corresponding alterations in other whorls, and seems, if anything, to be more frequent among monocotyledonous plants than among dicotyledonous ones; thus, we occasionally find tetramerous flowers in _Crocus_, _Hyacinthus_, _Tulipa_, _Iris_,
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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It is so common to observe on the same plant, flowers indifferently tetramerous, pentamerous, &c., that I need not give examples; but as numerical variations are comparatively rare when the parts are few, I may mention that, according to De Candolle, the flowers of Papaver bracteatum offer either two sepals with four petals (which is the common type with poppies), or three sepals with six petals.
VII. Miscellaneous Objections to the Theory of Natural Selection
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The species are distinguished from most other tetramerous beetles, by the thickened hinder thighs, by which they are enabled to leap to a considerable height into the air.
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This botanist observed and figured a flower of _Orchis palustris_ with tetramerous arrangement of parts, that is to say there were four outer segments to the perianth, four petals, of which two were lip-like, four stamens, three of which were rudimentary, and an ovary with four parietal placentæ. [
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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The stele is divided into three parts, the tetramerous proxistele closest to the theca tapering through the mesistele to the dimerous dististele furtherest from the theca.
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The perianth of Calceolariaceae is shown to be derived from a tetramerous condition, not from pentamery as traditionally believed.
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Thus trimerous fuchsias and tetramerous jasmines may frequently be met with, and Turpin describes a tetramerous flower of _Cobæa scandens_.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants
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It is so common to observe on the same plant, flowers indifferently tetramerous, pentamerous, &c., that I need not give examples; but as numerical variations are comparatively rare when the parts are few, I may mention that, according to De Candolle, the flowers of Papaver bracteatum offer either two sepals with four petals (which is the common type with poppies), or three sepals with six petals.
VII. Miscellaneous Objections to the Theory of Natural Selection
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The genus is characterized by tetramerous flowers with bithecal anthers, lack of pseudostaminodia, a capitate or poorly defined stigma, and pollen of the Amaranthus type.
