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Isocoma
''Isocoma'' commonly called Jimmyweed or goldenweed,〔(Flora of North America Vol. 20 Page 439 Jimmyweed, goldenweed, Isocoma Nuttall, Trans. Amer. Philos. Soc., n. s. 7: 320. 1840. )〕 is a genus of North American semi-woody shrubs in the sunflower family. It is found in the semi-arid areas of Southwestern United States and Mexico.〔(Nuttall, Thomas. 1840. Transactions of the American Philosophical Society, new series 7: 320 ) in English〕〔(Tropicos, ''Isocoma'' Nutt. )〕〔 ISBN 0-89672-614-2〕
The name of this genus is derived from the Greek for "equal hair" referring to the pappus on the seed.〔
''Isocoma'' species are used as food plants by the larvae of some Lepidoptera species including ''Schinia bicuspida'' (recorded on ''I. drummondii''), ''Schinia erosa'' (feeds exclusively on ''I. acradenia'') and ''Schinia tertia'' (recorded on ''I. pluriflora'').
;Species〔〔(Biota of North America Program 2013 county distribution maps )〕〔(The Plant List search for ''Isocoma'' )〕〔(Nesom, G.L. 1991. Taxonomy of ''Isocoma'' (Compositae: Astereae). Phytologia 70(2): 69–114 ) includes descriptions and distribution maps for 15 species〕
# ''Isocoma acradenia'' (Greene) Greene - alkali goldenbush, alkali jimmyweed - Baja California, Sonora, California Arizona Nevada Utah
# ''Isocoma arguta'' Greene - Carquinez goldenbush - Solano County in California
# ''Isocoma azteca'' G.L.Nesom - Aztec goldenbush - Arizona New Mexico
# ''Isocoma coronopifolia'' (Gray) Greene - common goldenbush, goldenweed - southern Texas, Coahuila, Nuevo León, Tamaulipas
# ''Isocoma drummondii'' (Torr. & Gray) Greene - Drummond's goldenbush, Drummond's jimmyweed - southern Texas, Tamaulipas
#''Isocoma felgeri'' G.L.Nesom - Sonora
#''Isocoma gypsophila'' B.L.Turner - Zacatecas, Nuevo León
# ''Isocoma hartwegii'' (A.Gray) Greene - San Luis Potosí, Zacatecas, Guanajuato
# ''Isocoma humilis'' G.L.Nesom - Zion goldenbush - Utah (Kane + Washington Cos)
# ''Isocoma menziesii'' (Hook. & Arn.) G.L.Nesom - Menzies' goldenbush - Baja California, California
# ''Isocoma pluriflora'' (Torr. & Gray) Greene - rayless goldenrod, southern goldenbush, southern jimmyweed - Texas New Mexico Arizona Chihuahua
# ''Isocoma rusbyi'' Greene - Rusby's goldenbush - Arizona New Mexico Utah Colorado
#''Isocoma tehuacana'' G.L.Nesom - Puebla
# ''Isocoma tenuisecta'' Greene - burrow goldenweed, burroweed - Arizona New Mexico
# ''Isocoma tomentosa'' G.L.Nesom - Chihuahua
# ''Isocoma veneta'' (Kunth) Greene - jimmyweed - Mexico from Coahuila to Oaxaca
==References==
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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