Ragweed, Western ragweed. Ragweed is a plant that many people speak of but might not know for sure what it looks like. As if one ragweed weren’t enough, the park also has a population of Western Ragweed (Ambrosia psilostachya). Western ragweed commonly inhabits roadsides and dry fields throughout California (except some regions in the Mojave Desert and Great Basin) and most of the Western U.S. to 1000 m (3280 ft). common names Ragweed, Western Ragweed (CF, ITIS ) Look for Jepson Manual treatments, maps (University & Jepson Herbaria) View Calflora record for Ambrosia psilostachya; Check the Plants Database (USDA website) View Encyclopedia of Life record for Ambrosia psilostachya; View all photos in CalPhotos of Ambrosia psilostachya Book: Brush and Weeds of Texas Rangelands (B-6208), Web Site Maintenance: Megan.Clayton@ag.tamu.edu, Equal Opportunity for Educational Programs Statement. Western ragweed. Ambrosia psilostachya, a dicot, is a perennial herbthat is nativeto California and and is … Altervista Flora Italiana, Ambrosia con spighe rade, University of Michigan at Dearborn: Native American Ethnobotany of, USDA National Forest Service, FEIS Ecology of, USGS.gov: Northern Prairie Wildlife Profile, https://en.wikipedia.org/w/index.php?title=Ambrosia_psilostachya&oldid=977070293, Taxa named by Augustin Pyramus de Candolle, Natural history of the California chaparral and woodlands, Plants used in traditional Native American medicine, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License, This page was last edited on 6 September 2020, at 19:06. Calflora: Illustrated Plant List : San Diego CNPS fall plant sale plant list ... Ambrosia pumila Ragweed, San diego ambrosia, San diego ragweed.
Taxonomy. The plant is covered with long, soft hairs.
See Phytologia 49(1): 44-50 (1981) for revised nomenclature. Leaves are up to 12 centimeters long and vary in shape from lance-shaped to nearly oval, and they are divided into many narrow, pointed lobes. It’s also known as Cuman ragweed. 2014 Richard Spellenberg. Ambrosia psilostachya is a species of ragweed known by the common names Cuman ragweed and perennial ragweed, and western ragweed. native Perennial herb. occidentalis) Western poison oak (Toxicodendron diversilobum) Western polypody (Polypodium hesperium) Western prickly-pear (Opuntia Xoccidentalis) Western ragweed (Ambrosia psilostachya) Western raspberry (Rubus leucodermis) Western ragweed, an aromatic perennial growing from rhizome-like rootstocks, is a very common weed of roadsides, dry fields and disturbed and waste places to about 2500'. Calflora: Illustrated Plant List : San Gabriel Mountains. Enter part of a name: Common Scientific or Family duration: Annual Perennial Biennial Catalogue of the flora of Missouri. 2011 Aaron Arthur. Berkeley, California: The Calflora Database [a non-profit organization]. Ambrosia psilostachya. Giant ragweed has been introduced to, and is now established in western North America and much of Asia and Europe. The plant is native to: North America … It occupies coastal sage scrub and chaparral communities, both cismontane and in parts of the Colorado Desert, and has once-pinnatifid, coarse-lobed leaves characterized by a greenish, rough pubescence. Cuman ragweed. This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Western ragweed commonly inhabits roadsides and dry fields throughout California (except some regions in the Mojave Desert and Great Basin) and most of the Western U.S. to 1000 m (3280 ft). ... Hesperocnide tenella Western nettle, Western stinging nettle, Western stingingnettle. However, common ragweed is controlled more easily with grazing management or herbicides than western ragweed. Habitats. The burs are hairy and sometimes spiny. Ambrosia psilostachya is a species of ragweed known by the common names Cuman ragweed, perennial ragweed, and western ragweed . milkweed Asclepias spp. About San Diego Bursage (Ambrosia chenopodiifolia) 3 Nurseries Carry This Plant Add to My Plant List; Ambrosia chenopodiifolia is a species of ragweed known by the common name San Diego Burrsage or San Diego Burr Ragweed. psilostachya (Western ragweed) pumila (San Diego ambrosia) salsola var. It has long been considered an aggres-sive competitor with grasses and is generally unpalatable to cattle. Monographs in Systematic Botany from the Missouri Botanical Garden 37. 2. common names Ragweed, Western Ragweed (CF, ITIS ) Look for Jepson Manual treatments, maps (University & Jepson Herbaria) View Calflora record for Ambrosia psilostachya; Check the Plants Database (USDA website) View Encyclopedia of Life record for Ambrosia psilostachya; View all photos in CalPhotos of Ambrosia psilostachya Note the flower forms. salsola Amelanchier utahensis (Utah serviceberry) Ammannia coccinea (Red ammannia) Amorpha californica var. Western ragweed is a native, warm-season perennial in the Sunflower family. psilostachya (Western ragweed) pumila (San Diego ambrosia) salsola var. chokecherry Prunus virginiana dogbane Apocynum spp. , Ambrosia psilostachya is an erect perennial herb growing a slender, branching, straw-colored stem to a maximum height near two meters, but more often remaining under one meter tall. The pistillate heads yield fruits which are achenes located within oval-shaped greenish-brown burs about half a centimeter long. Ambrosia psilostachya DC. Western ragweed is rhizomatous and can reproduce through vegetative tillers that come from the parent plant. In the native range (Arizona), Ambrosia confertiflora grows in dry or moist, rocky, sterile or fertile soils.  It is also naturalized in parts of Europe, Asia, Australia, and South America. 2011 Aaron Arthur. Flowers July-November. You can also view a clickable map. Common ragweed has slender, 1- to 4-inch cylindrical flower spikes that are made up of tiny green flowers. Ambrosia psilostachya (Western ragweed) Ambrosia salsola (Burrobrush, formerly Hymenoclea salsola) Ammi majus (Bishop) Amorpha californica (Mock locust) Amsinckia intermedia (Common fiddleneck) Amsinckia tessellata (Checker fiddleneck) Western ragweed is one of the most common forbs on Oklahoma rangelands. It’s also known as Cuman ragweed. It’s native to North America and from there has spread to all temperate zones worldwide. perennial ragweed. Taxonomic study needed. Personal communication. 1990. native Perennial herb. Ambrosia psilostachya. occidentalis) Western pearlwort (Sagina decumbens ssp. The stem and leaves are hairy.. Western ragweed is a perennial herb, usually less than 4.5 feet tall, from an underground stem (rhizome) that produces numerous vertical shoots. 2014 Richard Spellenberg. It has also been called the common names: American wormwood, bitterweed, blackweed, carrot weed, hay fever weed, Roman wormwood, short ragweed, stammerwort, stickweed, tassel weed. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming, Laramie, Wyoming. Ambrosia coronopifolia Torr. Common ragweed [Ambrosia artemisiifolia L.][AMBEL] is an annual introduced from the Eastern U.S. that closely resembles annual bursage. The plant reproduces by seed and by sprouting up from a creeping rhizome-like root system. DC. Ambrosia hispida Torr. Taxon Report 298. ryegrass, perennial Lolium spp. Ambrosia hispida Torr. Notes ; Threatened by mining, road maintenance, and vehicles. It’s native to North America and from there has spread to all temperate zones worldwide. Leaves: Opposite below, alternate above; petiole 0 to 1.2 inch; blade deltate to lanceolate in outline, .8 to 5.6 inches long, .4 to 2 inches wide, pinnately toothed to 1-pinnately lobed, base wedge-shaped to truncate, ultimate margins entire or toothed, surfaces hirsute to strigose. Height: 1 ft - 5 ft; Life Cycle: perennial; Growth Type: shrub; Flower Size: minute; Inflorescence Size: 1 - 5 in; Flower Type: clustered; Bloom Type: summer; Flower Color: green; Native to California: YES; California Range: coast - inland; Water Requirements: low; … ragweed or ragwort Senecio spp. 2010 Benjamin Smith. CA: Literature: Yatskievych, G., and J. Turner. rhododendrum Rhododendron spp. Calflora: Illustrated Plant List : San Diego CNPS fall plant sale plant list ... Ambrosia pumila Ragweed, San diego ambrosia, San diego ragweed. 2005 Vince Scheidt. It is in a transition zone between the … : Simple with Pinnate or Parallel Venation, Distribution
Distribution refers to the ecological region in Texas that a plant has been found. : 01 - Pineywoods, 02 - Gulf Prairies and Marshes, 03 - Post Oak Savannah, 04 - Blackland Prairies, 05 - Cross Timbers and Prairies, 06 - South Texas Plains, 07 - Edwards Plateau, 08 - Rolling Plains, 09 - High Plains, 10 - Trans-Pecos.
Los Angeles County Bob Muns / Tom Chester ... Ambrosia psilostachya Ragweed, Western ragweed.
Ambrosia psilostachya is a species of ragweed known by the common names Cuman ragweed, perennial ragweed, and western ragweed . 2011 Aaron Arthur. Calflora: Illustrated Plant List : San Gabriel Mountains. Ambrosia californica Rydb. azalea Rhododendron spp.