The Encyclopaedia Britannica; .. A dictionary of arts, sciences and general literature . stigma determinestheir true nature. Dehiscent fruits, when composed of single carpels, mayopen by the ventral suture only, as in the Paiony, Hellebore,Aquilegia (fig. 300), and Caltha; by the dorsal sutureonly, as in Magnolias and some Proteaceas, or by bothtogether, as in the Pea (fig. 256) and Bean ; in these casesthe dehiscence is called sutural. When composed of severalunited carpels, two types of dehiscertce may be recognized?—a longitudinal type and a transverse type. In thelongitudinal type the sepa
The Encyclopaedia Britannica; .. A dictionary of arts, sciences and general literature . stigma determinestheir true nature. Dehiscent fruits, when composed of single carpels, mayopen by the ventral suture only, as in the Paiony, Hellebore,Aquilegia (fig. 300), and Caltha; by the dorsal sutureonly, as in Magnolias and some Proteaceas, or by bothtogether, as in the Pea (fig. 256) and Bean ; in these casesthe dehiscence is called sutural. When composed of severalunited carpels, two types of dehiscertce may be recognized?—a longitudinal type and a transverse type. In thelongitudinal type the separation may take place by thedissepiments througho^*; their length, so that the fruit isresolved into its original carpels, and each valve will bea carpel, as in Rhododendron, Colchicum, &c. Thisdehiscence, ia consequence of taking place through thelamellae of the septum, is called septicidal (figs. 28^2851 The valves may separate from their commissure, or centralline of union, carrying the placentas with them, or theymay leave the latter in the centre, so as to form with the. 287. Fig. 288. Fig. 235. Fig. Fig. 283.—Seed-vessel or capsule of Campion ^Lychnis), opening by ten teeth at tlie apex. The placenta 13 dee centra]. The calyx is seen surrounding th« seed-vessel, but not adheient. Fio. 284.—Fi-uit or capsule of Meadow Saffron {Colchicum aufumna^e), dehiscing by three valves in a septicidal manner. The fruit is thus resolved into ita three component cai-pels, with their styles and 285.—Diagram to illustrate the septicidal dehiscence In a pentalocular capsule. The loculamcnts I correspoud to the number of the oai-pels, which separate by splitting through the septa 2S6.—The seed vessel (capsule) of the Flower-de-Luce (/Kj), opening in a loculicidal manner. The three valves bear the septa in the centre, and the opening takes place througii tho back of the loculaments. Each valve la foimcd by the halves of contiguous 287.—Diagram to
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