. The elements of botany for beginners and for schools. Botany. SECTION 8.] ARRANGEMENTS IN THE BUD. 97 275. In Violets (Fig. 238, 276), the odd sepal is posterior (next the axis) ; the odd petal is therefore anterior, or next the subtending leaf. In the papilionaceous flower (Fig. 261, and diagram, Fig. 275), the odd sepal is anterior, and so two sepals are posterior; consequently, by the alternation, the odd petal (the standard) is posterior or upper, and the two petals forni- iugr the keel are anterior or lower. /!^^ § 5. ARRANGEMENT OF PARTS IN THE BUD. 276. .Estivation was the fanciful na
. The elements of botany for beginners and for schools. Botany. SECTION 8.] ARRANGEMENTS IN THE BUD. 97 275. In Violets (Fig. 238, 276), the odd sepal is posterior (next the axis) ; the odd petal is therefore anterior, or next the subtending leaf. In the papilionaceous flower (Fig. 261, and diagram, Fig. 275), the odd sepal is anterior, and so two sepals are posterior; consequently, by the alternation, the odd petal (the standard) is posterior or upper, and the two petals forni- iugr the keel are anterior or lower. /!^^ § 5. ARRANGEMENT OF PARTS IN THE BUD. 276. .Estivation was the fanciful name given by Linnaeus to denote the disposition of the parts, especially the leaves of the flower, before An- thesis, i. e. before the blossom opens. Prafloration, a better term, is some- times used. This is of importance in distinguishing differeiit families or genera of plants, being generally luiiform in each. The aestivation is best seen by making a slice across the flower-bud ; and it may be expressed in diagrams, as iu the accompanying tigures. 277. Tiie pieces of the calyx or the corolla either overlap each other iu tiie bud, or they do not. When they do not overlap, the aestivation is Valvate, when the pieces meet each other by their abrupt edges, without any infolding or overlapping; as the calyx of the Linden or Basswood (Fig. 277). Induplicate, which is valvate with the margins of each piece projecting inwards, as in the calyx of a common Virgiu's-bower, Fig. 2/8, or Involute, which is the same but the margins rolled inward, as iu most of the large-flowered species of Clematis, Fig. 279. Reduplicate, a rarer modification of valvate, is similar but with margins projecting outward. Open, the parts not touching in the bud, as the calyx of Mignonette. 278. When the pieces overlap in the bud, it is iu one of two ways; either every piece has one edge in and one edge out, or some pieces are wholly outside and others wholly inside. In the first case the geslivation is Convol
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Keywords: ., bookpublishernewyorkamericanboo, booksubjectbotany, bookyear1887
