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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 ...
It is a naturally occurring hybrid of narrowleaf cottonwood, Populus angustifolia, and eastern cottonwood, Populus deltoides, found where their ranges overlap. It is planted as a shade tree in cities in the Rockies, preferring to grow at elevations between 4,500 and 8,500 ft. [ 3 ] [ 4 ] Given the plant's proclivity (like other poplars) to send ...
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.
The species are hard to distinguish, and their ranges overlap; furthermore, several of them have large numbers of slightly different varieties, and several of the species hybridise naturally. To decide which species a particular specimen belongs to, therefore, is likely to require a detailed examination with an identification key in hand.
The secretion by a plant of biochemicals which influence the growth and reproduction of nearby plants. allopatric 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.
The two species are not genetically compatible: the result of over 27 attempts in Russia to hybridise the two species was just one stillborn kit, bred from the pairing of a male North American beaver and a female Eurasian beaver. The difference in chromosome count makes interspecific breeding unlikely in areas where the two species' ranges overlap.
Persea palustris, also known as swamp bay or swampbay, is a small tree or shrub found throughout the Southeastern United States and the Bahamas, with much of its range overlapping with that of its relative Persea borbonia. It is generally not more than 40 feet (12 meters) tall, with bark separated into scales by fissures across its surface.
On one extreme is allopatry, in which the overlap is zero (no gene flow), and on the other extreme is sympatry, in which the ranges overlap completely (maximal gene flow). The varying definitions of sympatric speciation fall generally into two categories: definitions based on biogeography, or on population genetics.