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Either a minor calyx in the kidney, a conglomeration of two or three minor calyces to form a major calyx, or the Calyx of Held, a particularly large synapse in the mammalian auditory central nervous system, named by H. Held in his 1893 article Die centrale Gehörleitung, [3] due to its flower-petal-like shape.
The bracts are lance-shaped and re shorter than the leaves. The stalks holding them are slender with narrow glands. The calyx segments are linear and curved. They are covered in glands and dense, fine hairs. The petals are pale with a rounded lower lip and no margin at the tip.
The calyx segments are unequal with the outer lobes longer and not keeled and the inner ones narrowly keeled. The tepals are greenish, with yellowish tinting or sometimes with whitish tints. The seeds are produced in fruits called achenes that can be of two different types; one type is dark brown with a shiny surface and is broadly egg-shaped ...
A series of bracts subtending the calyx (see below) is an epicalyx. Angiosperms are dealt with in more detail here; these structures are very different in gymnosperms. [7] In angiosperms, the specialised leaves that play a part in reproduction are arranged around the stem in an ordered fashion, from the base to the apex of the flower.
Each calyx bears four short filaments with one-celled anthers or strictly, two filaments divided into two branches, each bearing a half-anther. Anther cells open longitudinally. The pistillate segments are erect or pendulous, and solitary, terminal on the two-leaved lateral spur-like branchlets of the year.
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The calyx is campanulate and divided into five segments, which are subequal and shaped lance-ovate to oblong-ovate. The calyx segments measure 2.5–5 mm (0.098–0.197 in) long in flower to 5–7 mm (0.20–0.28 in) in fruit. [4] [6] The bilabiate corolla is tubular, 2.5–3 cm (0.98–1.18 in) long, and faintly saccate at the base. The upper ...
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