Page:An introduction to physiological and systematical botany (1st edition).djvu/256

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226
OF THE FULCRA,

a right to the name of fulcrum, is found in the Annona hexapetala, Linn. Suppl. 270. The flower-stalk of this tree forms a hook, and grasps the neighbouring branch, serving to suspend the fruit, which is very heavy, resembling a bunch of grapes, and indicates the plant in question to be either a Michelia or an Uvaria.

6. Glandula, a Gland, is defined by Linnæus as a little tumour discharging a fluid. Such are abundant on the stalk and calyx of a Moss Rose, Curt. Mag. t. 69, and between the serratures of the leaf of Salix pentandra, Bay-leaved Willow; also on the footstalks of Viburnum Opulus, Engl. Bot. t. 332, and various species of Passion-flower. The liquor discharged is in the first mentioned instances resinous and fragran[errata 1], in the latter a sort of honey.

7. Pilus. A Hair. This, according to the Linnæan definition, is an excretory duct of a bristle-like form. Such it undoubtedly is i t the Nettle, Urtica, Engl. Bot. t. 148, and t. 1236, whose bristles are tubular and per-

  1. Correction: fragran should be amended to fragrant