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verticils

verticils Sentence Examples

  • Upon this torus the parts of the flower are arranged in a crowded manner, usually forming a series of verticils, the parts of which alternate; but they are sometimes arranged spirally especially if the floral axis be elongated.

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  • This suppression when confined to the parts of certain verticils makes the flower asymmetrical.

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  • Thus, in many Caryophyllaceae, as Polycarpon and Holosteum, while the calyx and corolla are pentamerous, there are only three or four stamens and three carpels; in Impatiens Noli-me-tangere the calyx is composed of three parts, while the other verticils have five; in labiate flowers there are five parts of the calyx and corolla, and only four stamens; and in Tropaeolum pentaphyllum there are five sepals, two petals, eight stamens and three carpels.

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  • The parts of the several verticils often differ in their mode of aestivation.

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  • Using Calamites as a generic name for all those Calamarian stems in which the ribs alternate at the nodes, we have, on Weiss's system, the following sub-genera: Stylocalamites, branches rare and irregularly arranged; Calamitina, branches in regular verticils, limited to certain nodes, which surmount specially short internodes; Eucalamites, branches present on every node.

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  • Here, as in the previous genus, sterile and fertile verticils are ranged alternately on the axis of the cone.

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  • Weiss first showed, immediately below the verticils of bracts, the position thus being the reverse of that in Palaeostachya.

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  • which in structure resembles the vegetative stem in its primary condition, bears numerous verticils of bracts, those of each verticil being coherent in their lower part, so as to form a disc or cup, from the margin of which the free limbs of the bracts arise.

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  • in diameter; the stout axis bears numerous whorls of compound sporophylls, the members of successive verticils being superposed.

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  • Upon this torus the parts of the flower are arranged in a crowded manner, usually forming a series of verticils, the parts of which alternate; but they are sometimes arranged spirally especially if the floral axis be elongated.

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  • This suppression when confined to the parts of certain verticils makes the flower asymmetrical.

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  • Thus, in many Caryophyllaceae, as Polycarpon and Holosteum, while the calyx and corolla are pentamerous, there are only three or four stamens and three carpels; in Impatiens Noli-me-tangere the calyx is composed of three parts, while the other verticils have five; in labiate flowers there are five parts of the calyx and corolla, and only four stamens; and in Tropaeolum pentaphyllum there are five sepals, two petals, eight stamens and three carpels.

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  • The parts of the several verticils often differ in their mode of aestivation.

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  • Using Calamites as a generic name for all those Calamarian stems in which the ribs alternate at the nodes, we have, on Weiss's system, the following sub-genera: Stylocalamites, branches rare and irregularly arranged; Calamitina, branches in regular verticils, limited to certain nodes, which surmount specially short internodes; Eucalamites, branches present on every node.

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  • Here, as in the previous genus, sterile and fertile verticils are ranged alternately on the axis of the cone.

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  • In these strobili the peltate scales, like the vegetative leaves of the plant, are in superposed verticils; each appears to have borne four sporangia (fig.

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  • Weiss first showed, immediately below the verticils of bracts, the position thus being the reverse of that in Palaeostachya.

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  • which in structure resembles the vegetative stem in its primary condition, bears numerous verticils of bracts, those of each verticil being coherent in their lower part, so as to form a disc or cup, from the margin of which the free limbs of the bracts arise.

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  • in diameter; the stout axis bears numerous whorls of compound sporophylls, the members of successive verticils being superposed.

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