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・ Eriophorum vaginatum
・ Eriophorum viridicarinatum
・ Eriophyes
・ Eriophyes inangulis
・ Eriophyes padi
・ Eriophyes tiliae
・ Eriophyes vitis
・ Eriophyidae
・ Eriophyllum
・ Eriophyllum ambiguum
・ Eriophyllum confertiflorum
・ Eriophyllum congdonii
・ Eriophyllum jepsonii
・ Eriophyllum lanatum
・ Eriophyllum lanosum
Eriophyllum latilobum
・ Eriophyllum mohavense
・ Eriophyllum multicaule
・ Eriophyllum nubigenum
・ Eriophyllum pringlei
・ Eriophyllum staechadifolium
・ Eriophyllum wallacei
・ Eriophyoidea
・ Eriophyton
・ Eriopidion
・ Eriopis
・ Eriopis connexa
・ Eriopithex
・ Eriopithex ishigakiensis
・ Eriopithex lanaris


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Eriophyllum latilobum : ウィキペディア英語版
Eriophyllum latilobum

''Eriophyllum latilobum'' or San Mateo woolly sunflower〔 is a perennial herb of sharply limited range, endemic and occurring only in the state of California, USA. This flowering plant of the Asteraceae family has been listed as an endangered species by the U.S. federal government as well as the state of California.〔United States Fish & Wildlife Service. 2005. Threatened and Endangered Animals and Plants, Species Information.〕
==Description==
Like the other 13 species members of its genus, ''Eriophyllum latilobum'' presents generally alternate leaves ranging from entire to nearly compound. The flower heads are grouped in radiate, flat-topped heads, with an hemispheric to nearly conic involucre. Phyllaries are either free, or more or less fused, their receptacle flat, but naked and conic in the center. The ray flowers (the "petals") have yellow ligules entire to lobed. Fruits are 4-angled cylindric achenes in the outer flowers, but are generally club-shaped for the inner flowers; the pappus is somewhat jagged.〔Mooring, Madroño 38:213–226, (1991)〕
''Eriophyllum latilobum'' occurs as a subshrub between 20 and 50 centimeters in height. Its thin leaves are two to six centimeters in length, and have a diamond to obovate shape; the deeply triangular-lobed leaves are smooth on the top surface. The inflorescence's peduncles are one to eight centimeters and the involucres measure four to seven millimeters. The acute, barely overlapping phyllaries number six to ten. The ray flowers number 6-13. The rays surround 40-70 disc flowers, each three to four millimeters in diameter. The strigose (hairy) fruit measures 3-4 millimeters (0.12-0.16 inches), and its pappus can vary between 0.3 to 1.0 millimeters (0.012-0.40 inches). Disc scales are larger than the ray scales. Chromosomes are characterized as: 2n=32.〔(''Jepson Manual'', University of California Press (1993} )〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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