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''Gaillardia pinnatifida'' (Hopi blanketflower or red dome blanketflower) is a perennial plant in the sunflower family (Asteraceae) found in northern Mexico (Chihuahua, Coahuila, Durango, Sonora)〔Turner, B. L. 2013. The comps of Mexico. A systematic account of the family Asteraceae (chapter 11: tribe Helenieae). Phytologia Memoirs 16: 1–100〕 and in the south-central and southwestern United States (from southwestern Kansas south to central Texas and west as far as southern Nevada).〔Canyon Country Wildflowers, Damian Fagan, 2nd ed., 2012, Morris Bush Publishing, LLC. in cooperation with Canyonlands Natural History Association, ISBN 978-0-7627-7013-7〕〔(Biota of North America Program 2014 county distribution map )〕 ==Description== ''Gaillardia pinnatifida'' is a perennial growing to with hairy, wavy to lobed leaves up to long, growing to halfway up the stem, with a solitary flower head on top having 7-12 yellow ray flowers and numerous densely packed orange-brown to purple disk flowers.〔 The 3-tipped ray flowers may have tips so deep as to be considered lobed.〔〔(Flora of North America, ''Gaillardia pinnatifida'' Torrey, 1827. )〕 ''Gaillardia pinnatifida'' displays considerable variation in parts of its range, so much so that some authors have divided ''G. pinnatifida'' into varieties or distinct species. These taxa do intergrade with each other, so Flora of North America〔 and the Kew Garden Plant List〔(The Plant List, ''Gaillardia pinnatifida'' Torr. )〕 does not recognise any of these as separate taxa. Many populations in Arizona have unlobed leaves, unlike the deeply divided leaves farther to the east, and populations in Utah have yellow rather than brown or purple disc flowers, as well as gland-dots embedded in the leaves.〔 ==Habitat== ''Gaillardia pinnatifida'' can be found in blackbrush scrub, mixed shrub-grasslands, and pinyon juniper woodland communities.〔 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「Gaillardia pinnatifida」の詳細全文を読む スポンサード リンク
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