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Merosity (from the greek "méros," which means "having parts") refers to the number of component parts in a distinct whorl of a plant structure. [1] The term is most commonly used in the context of a flower where it refers to the number of sepals in a whorl of the calyx, the number of petals in a whorl of the corolla, the number of stamens in a whorl of the androecium, or the number of carpels ...
In botany, a whorl or verticil is a whorled arrangement of leaves, sepals, petals, stamens, or carpels that radiate from a single point and surround or wrap around the stem or stalk. [ 1 ] [ 2 ] A leaf whorl consists of at least three elements; a pair of opposite leaves is not called a whorl.
A stereotypical flower is made up of four kinds of structures arranged in whorls around the tip of a short stalk or axis, called a receptacle. [ 11 ] [ 2 ] The four main whorls (starting from the base of the flower or lowest node and working upwards) are the calyx , corolla , androecium , and gynoecium .
In the case that such a whorl is the androecium, the flowers are called male or staminate; while if the whorl present is the gynoecium, the flowers are called pistillate or female. There are some cases in which the flower does not present any of the reproductive whorls and only shows sepals and petals.
A spike, usually pendulous, in which the mostly small flower s are unisexual and without a conspicuous perianth, e.g. in willows, poplars, oaks, and casuarinas. The individual flowers often have scaly bract s and are generally wind-pollinated. Catkins are usually shed as a unit. caudate Having a narrow, tail-like appendage or tip, e.g. a drip tip.
In Chinese art, the Four Gentlemen or Four Noble Ones (Chinese: 四君子; pinyin: Sì Jūnzǐ), is a collective term referring to four plants: the plum blossom, the orchid, the bamboo, and the chrysanthemum. [1] [2] The term compares the four plants to Confucian junzi, or "gentlemen".
The flower bears six free perianth segments rather than true petals, arranged in two whorls of three, the outer whorl being larger and more convex than the inner whorl. The outer tepals are acute to more or less obtuse , spathulate or oblanceolate to narrowly obovate or linear, shortly clawed, and erect spreading.
A pistil typically consists of an expanded basal portion called an ovary, an elongated section called a style and an apical structure called a stigma that receives pollen. The ovary (from Latin ovum , meaning egg) is the enlarged basal portion which contains placentas , ridges of tissue bearing one or more ovules (integumented megasporangia ).