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Mentha, also known as mint (from Greek μίνθα míntha, [2] Linear B mi-ta [3]), is a genus of flowering plants in the mint family, Lamiaceae. [4] It is estimated that 13 to 24 species exist, but the exact distinction between species is unclear. [5] [1] Hybridization occurs naturally where some species' ranges overlap. Many hybrids and ...
Having geographically separate, non-overlapping ranges of distribution. [17] Contrast sympatric. alternate 1. (adj.) (of leaves or flower s) Borne singly at different levels along a stem, including spiralled parts. Contrast opposite. 2. (prep.) Occurring between something else, e.g. stamen s alternating with petal s. alternipetalous
Character displacement was first explicitly explained by William L. Brown Jr. and E. O. Wilson in 1956: "Two closely related species have overlapping ranges. [1] In the parts of the ranges where one species occurs alone, the populations of that species are similar to the other species and may even be very difficult to distinguish from it.
The leaf has a very short petiole 1 ⁄ 4 – 1 ⁄ 2 in (1–1 cm) long. The flowers are wind-pollinated catkins which open in later spring. [7] Both male and female flowers will occur on the same tree making the plant monoecious. The male catkins are 2–4 in (5–10 cm) long, yellow purple, pendulous (hang downwards), and occur in groups of ...
DSC is the quotient of similarity and ranges between 0 and 1. [9] It can be viewed as a similarity measure over sets. Similarly to the Jaccard index , the set operations can be expressed in terms of vector operations over binary vectors a and b :
Example of a radial tree, from a 1924 organization chart that emphasizes a central authority [1] A radial tree, or radial map, is a method of displaying a tree structure (e.g., a tree data structure) in a way that expands outwards, radially. It is one of many ways to visually display a tree, [2] [3] with examples dating back to the early 20th ...
2021/22 tax data shows a very wide income range on a state-by-state basis. Here's what it takes to be in the top 1% in your state — plus a few tips to help you reach a new income bracket in 2025 ...
The balm-of-Gilead (Populus × jackii), also known as P. × gileadensis, is the hybrid between P. balsamifera and the eastern cottonwood (P. deltoides), occurring occasionally where the two parental species' ranges overlap.