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''Tetraneuris acaulis'' is a North American species of flowering plants in the sunflower family. 〔''(Tetraneuris acaulis )''. ITIS.〕〔''(Tetraneuris acaulis )'. Lady Bird Johnson Wildflower Center, University of Texas.〕 〔''(Hymenoxys acaulis )''. ''The Jepson Manual, University of Calilfornia''〕〔''(Hymenoxys acaulis )''. United States Geologic Survey, Native Wildflowers of the North Dakota Grasslands.〕〔(''Tetraneuris acaulis'' ). Southwest Colorado Wildflowers.〕〔''(Tetraneuris acaulis )''. CalFlora taxon report, University of California〕〔''(Tetraneuris acaulis )''. Flora of North America.〕 Common names include angelita daisy,〔(Arizona Municipal Water Users Association, Low Water-use Plants )〕 stemless four-nerve daisy,〔''(Tetraneuris acaulis )''. United States Department of Agricultgure Plants Profile〕 stemless hymenoxys,〔 butte marigold,〔''(Tetraneuris acaulis )''. Canadensys.〕 and stemless rubberweed.〔 ''Tetraneuris acaulis'' is widespread across much of the western and central United States, west-central Canada (Alberta, Saskatchewan) and northern Mexico (Chihuahua, Coahuila, Zacatecas).〔(Biota of North America Program 2014 county distribution map )〕〔〔 It grows in a variety of habitat types in foothills and subalpine regions,〔 and high prairie, badlands,〔 and plains.〔 ''Tetraneuris acaulis'' is a "highly variable"〔 plant is a perennial herb which may be quite tiny to over 60 centimeters (2 feet) in height. The erect stems are surrounded by basal leaves. The leaves may be hairy or hairless, and glandular or without glands. There may be few or many flower heads borne singly on hairy stalks. The base of each flower head is up to 1.6 centimeters (0.64 inches) wide. The head contains 8 to 21 yellow ray florets each up to 2 centimeters (0.8 inch) long. At the center are many yellow disc florets, sometimes 200 or more. The fruits are dry achenes only a few millimeters long.〔 Flowering time is summer.〔〔 It is generally accepted that there are four varieties of this species:〔〔(SEINet, Southwestern Biodiversity, Arizona chapter ) photos, description, distribution map〕 *''Tetraneuris acaulis'' var. ''acaulis'': stemless four-nerve daisy - Alberta, Saskatchewan, Colorado, Idaho, Kansas, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas, Wyoming, Chihuahua, Zacatecas *''Tetraneuris acaulis'' var. ''arizonica'': Arizona four-nerve daisy - Arizona, California, Colorado, Idaho, Nevada, Utah *''Tetraneuris acaulis'' var. ''caespitosa'': caespitose four-nerve daisy -Colorado, New Mexico, Wyoming *''Tetraneuris acaulis'' var. ''epunctata'': stemless four-nerve daisy - Colorado, Utah, Wyoming, Coahuila and sometimes a fifth:〔〔''(Tetraneuris acaulis )''. Tropicos〕 *''Tetraneuris acaulis'' var. ''nana'': stemless four-nerve daisy - Utah〔(Welsh, Stanley Larson. 1993. Rhodora 95(883/884): 398–399 ) diagnosis in Latin, commentary in English〕〔(Welsh, Stanley Larson. 1993. Rhodora 95(883/884): Plate 1, figure 5 ) line drawing of ''Tetraneuris acaulis'' var. ''nana''〕 ''Tetraneuris acaulis'' has medicinal uses. The Hopi used a poultice of the plant to relieve hip and back pain in pregnant women, and to make a stimulating drink.〔''(''Tetraneuris acaulis'' )'. University of Michigan, Dearborn, Native American Ethnobotany Database.〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tetraneuris acaulis」の詳細全文を読む スポンサード リンク
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