ⓘ Bitterbrush. Purshia is a small genus of 5-8 species of flowering plants in the family Rosaceae, native to western North America, where they grow in dry climate ..


ⓘ Bitterbrush

Purshia is a small genus of 5-8 species of flowering plants in the family Rosaceae, native to western North America, where they grow in dry climates from southeast British Columbia in Canada south throughout the western United States to northern Mexico. The classification of Purshia within the Rosaceae has been unclear. The genus was originally placed in the subfamily Rosoideae, but is now placed in subfamily Dryadoideae.

They are deciduous or evergreen shrubs, typically reaching 0.3–5 m tall. The leaves are small, 1–3 cm long, deeply three- to five-lobed, with revolute margins. The flowers are 1–2 cm diameter, with five white to pale yellow or pink petals and yellow stamens. The fruit is a cluster of dry, slender, leathery achenes 2–6 cm long. The roots have root nodules that host the nitrogen-fixing bacterium Frankia.

The evergreen species were treated separately in the genus Cowania in the past; this genus is still accepted by some botanists.


1. Species

  • Purshia mexicana - Mexican cliffrose syn. Cowania mexicana. Mexico, Arizona.
  • Purshia glandulosa - Desert bitterbrush. Nevada, Utah, Arizona.
  • Purshia plicata - Antelope bush syn. Cowania plicata. Mexico Nuevo Leon.
  • Purshia pinkavae - Pinkavas cliffrose. Arizona.
  • Purshia ericifolia - Heath cliffrose. Texas.
  • Purshia stansburyana - Stansbury cliffrose syn. P. mexicana var. stansburiana, Cowania stansburiana. Idaho south to California, Arizona and New Mexico.
  • Purshia tridentata - Antelope bitterbrush. British Columbia south to California and New Mexico.
  • Purshia subintegra possibly a hybrid between P. pinkavae and P. stansburyana. Arizona.
  • Purshia tridentata, with the common name bitterbrush is a shrub in the genus Purshia of the family Rosaceae. It is native to mountainous areas of western
  • plant in the rose family known by the common names antelope bitterbrush desert bitterbrush Mojave antelope brush. The plant is endemic to the southwestern
  • continental climate supports open woodlands dominated by ponderosa pine and bitterbrush with some Douglas - fir and Oregon white oak. Fire is an integral part
  • nauseosa green ephedra Ephedra vidris hot - sage Grayia spinosa and bitterbrush Purshia glandulosa Sagebrush scrub occurs in relatively deep soils
  • to midsummer depending on the location. Recorded food plants include bitterbrush rose, aspen, poplar and willow. Acronicta impressa impressa Acronicta
  • species. The western side of the brushy foothills consist mostly of bitterbrush and curl - leaf mahogany. As elevation increases, forests of ponderosa
  • Acmaeodera purshiae, the bitterbrush jewel beetle, is a species of metallic wood - boring beetle in the family Buprestidae. It is found in North America
  • florets. The species grows in open rocky slopes dominated by sagebrush, bitterbrush or juniper. Some Plateau Indian tribes used desert yellow fleabane as
  • fendlerbush Fendlera rupicola wavyleaf oak Quercus undulata antelope bitterbrush Purshia tridentata and skunkbush sumac Rhus trilobata The branches
  • dominated by sagebrush Artemisia species common associations include bitterbrush Purshia species rabbitbrush Chrysothamnus species, Ericameria nauseosus
  • foothills. Its preferred habitat is dry, sandy soils in sagebrush and bitterbrush vegetation. An annual species, 2 to 10 cm tall, bearing 1 to 20 yellow
  • a small herd of elk also winter on the WMA. Shrub seedlings, such as bitterbrush and Hobble Creek sagebrush are planted on the WMA for big game forage
  • primarily low - lying shrubs, such as big sagebrush Artemisia tridentata and bitterbrush Purshia tridentata with too little rainfall to support the growth
  • elevations are lodgepole pine, whitebark pine, fields of sagebrush and bitterbrush Many species of rare plants are protected in the South Warner Wilderness
  • habitat. In Washington it grows in plant communities dominated by antelope bitterbrush Purshia tridentata and Indian ricegrass Oryzopsis hymenoides purple
  • communities of bluebunch wheatgrass, bluegrass, Idaho fescue, big sagebrush, bitterbrush medusahead wildrye, and cheatgrass, with bunch grasses, sedges, rushes
  • Mountain - mahogany and bitterbrush provide winter cover and forage for mule deer. Rodents, songbirds, and upland game birds also use the fruits of bitterbrush The second
  • Forestry 1930 1931 and started his laboratory and field research with bitterbrush Purshia tridentata that spanned the next fifty years. Gus Hormay started
  • also supports a plant community that includes big sagebrush, antelope bitterbrush and other shrubs as well as a number of desert grasses and flowering

  • 9b Grand Fir Mixed Forest 9c Oak Conifer Foothills 9d Ponderosa Pine Bitterbrush Woodland 9e Pumice Plateau 9f Pumice Plateau Basins 9g Klamath Goose
  • drought - tolerant species such as sagebrush, juniper, mountain mahogany, bitterbrush and aspen. The elevation ranges from 4, 100 feet 1, 200 m to 7, 200 feet
  • pygmy rabbits in southeastern Idaho include big sagebrush, antelope bitterbrush Purshia tridentata threetip sagebrush A. tripartita low rabbitbrush
  • trilobata mountain mahogany Cercocarpus breviflorus and antelope bitterbrush Purshia tridentata Navajo Natives use an infusion of the inner bark
  • woodlands are thinned by land managers. Sagebrush, Klamath plum, and bitterbrush predominate in the sage steppe. List of parks in Klamath Falls, Oregon
  • receiving between 5 and 10 inches 250 mm of rain per year. The sagebrush - bitterbrush - bunchgrass lands are home to a wide variety of plants and animals, and
  • cover and food for wildlife. As elevation decreases, trees give way to bitterbrush Gambel oak, sagebrush, and cliffrose. Within the forest, there are irregular
  • understory components. In the Cascades east and north of Mt. Shasta, bitterbrush and tobacco brush are very common. On the serpentines of Trinity County s
  • precipitation, and between 4, 500 and 8, 000 feet. Associates include bitterbrush Purshia glandulosa Apache plume Fallugia paradoxa desert sagebrush
  • cliffrose Populus tremuloides quaking aspen Purshia tridentata antelope bitterbrush Quercus gambelii Gambel oak and Rhus trilobata skunkbush sumac
  • pine, and juniper. To the south, chaparral plants such as beargrass and bitterbrush prevail. Diverse life exists within the range, including endangered species

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