Abstract
LONDON
Linnean Society, Nov. 4.—Dr. G. J. Allman, F.R.S., president, in the chair.—The following papers were read:-Observations on Bees, Wasps, and Ants, Part III., by Sir John Lubbock, Bart., F.R.S. An abstract of this paper appears in another column.—On the rate of growth of the female flower-stalk of Vallisneria spiralis, by A. W. Bennett, F.L.S. The peduncle of the female flower of this plant is remarkable for the rapidity of its growth, attaining a length of from three to four feet; and increasing, at its period of greatest energy, at the rate of half an inch per hour. The observations were chiefly directed to determine which portion of the peduncle displayed the greatest part of this energy; and this was found to lie in a portion at but a short distance below the flower-bud; a marked zone of two inches increasing ultimately relatively to the remainder ofthe flower-stalk about in the proportion of three to two. This displays a greater analogy to what has been hitherto observed in the case of roots than in that of aërial stems. The coiling up of the peduncle so as to bring the flower beneath the surface does not take place when the flower has not been impregnated. - On plants collected by Lieut. Cameron about Lake Tanganyika, by Prof. Oliver, F.R.S.—On a collection of North Celebes plants made by M. Riedel, by Prof. Oliver, F.R, S.
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Societies and Academies . Nature 13, 39–40 (1875). https://doi.org/10.1038/013039a0
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DOI: https://doi.org/10.1038/013039a0