About: Rhus michauxii     Goto   Sponge   NotDistinct   Permalink

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Rhus michauxii is a rare species of flowering plant in the cashew family known by the common names false poison sumac and Michaux's sumac. It is endemic to the southeastern United States, where it can be found in the states of Virginia, North Carolina, South Carolina and Georgia. It is threatened by the loss and degradation of its habitat and by barriers to reproduction. It is a federally listed endangered species of the United States.

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  • Rhus michauxii (en)
  • Rhus michauxii (sv)
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  • Rhus michauxii är en sumakväxtart som beskrevs av Charles Sprague Sargent. Rhus michauxii ingår i släktet sumaker, och familjen sumakväxter. Inga underarter finns listade i Catalogue of Life. (sv)
  • Rhus michauxii is a rare species of flowering plant in the cashew family known by the common names false poison sumac and Michaux's sumac. It is endemic to the southeastern United States, where it can be found in the states of Virginia, North Carolina, South Carolina and Georgia. It is threatened by the loss and degradation of its habitat and by barriers to reproduction. It is a federally listed endangered species of the United States. (en)
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  • Rhus (en)
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  • michauxii (en)
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  • Rhus michauxii is a rare species of flowering plant in the cashew family known by the common names false poison sumac and Michaux's sumac. It is endemic to the southeastern United States, where it can be found in the states of Virginia, North Carolina, South Carolina and Georgia. It is threatened by the loss and degradation of its habitat and by barriers to reproduction. It is a federally listed endangered species of the United States. This plant is a small shrub growing 30 to 60 centimeters tall. It is very hairy in texture. The small size and hairiness distinguish the plant from other sumacs. The long leaves are each made up of several pairs of toothed leaflets. The plant is dioecious with male and female reproductive parts occurring on separate plants. The female plant produces an erect inflorescence of white or greenish yellow flowers and red drupes. This plant was first described as Rhus pumila by André Michaux in 1803, and it was renamed for Michaux in 1895. This shrub grows in wooded areas often on clay or decomposed granite soils. It occurs in sandhills habitat in loamy soils. The habitat may be dominated by longleaf pine and oaks and it may grow alongside Ceanothus americanus, , , , Onosmodium virginianum, and Helianthus divaricatus. Other associates and indicators of the plant include Liquidambar styraciflua, Cornus florida, Rhus glabra, R. copallinum, Schizachyrium scoparium , Brickellia eupatorioides, Eupatorium godfreyanum, E. sessilifolium, Silphium compositum, Helianthus divaricatus, Helianthus strumosus, Viburnum rafinesquianum, , Clematis ochroleuca, Sanicula smallii, Salvia urticifolia, and . The area is generally somewhat more moist than surrounding habitat types. The plant requires openings in the vegetation so it can receive sunlight. Half of the recorded populations of this plant have been extirpated. Much of its habitat has been cleared for residential, industrial, and agricultural operations, including silviculture, and the construction of roads. Remaining habitat is degraded by the lack of a normal fire regime. The plant does not tolerate shade and it grows naturally in openings maintained by wildfire. Today, fire suppression is practiced and normal periodic wildfires are prevented. The result is overgrowth of the vegetation, which shades out the rare shrub. This plant also has difficulty reproducing. It is clonal, often reproducing vegetatively, so populations are low in genetic variability. It may hybridize with the common Rhus glabra. This union forms Rhus × ashei, a natural hybrid. One major reproductive problem is that many populations are composed entirely of one sex. Furthermore, the populations are small and very widely spaced, making reproduction impossible. As the plant requires open habitat, it may arise in artificially cleared areas such as roadsides. There it is vulnerable to destruction from construction, maintenance, and herbicides. Conservation activities include genetic analysis in an effort to understand the genetic variability of populations. Plant propagation techniques are being studied. Plants are being reintroduced to appropriate habitat, including the placement of opposite-sex plants into single-sex populations. Plants are transplanted from high-risk areas to better habitat for their survival. Prescribed burns help to create openings where the plant can thrive. (en)
  • Rhus michauxii är en sumakväxtart som beskrevs av Charles Sprague Sargent. Rhus michauxii ingår i släktet sumaker, och familjen sumakväxter. Inga underarter finns listade i Catalogue of Life. (sv)
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