Chenopodium
Chenopodium là chi thực vật có hoa trong họ Amaranthaceae.

Các loài
 Chenopodium × variabile Aellen (C. album × C. berlandieri)
 Chenopodium acerifolium
 Chenopodium acerifolium f. morarii
 Chenopodium acicularis
 Chenopodium acuminatum Willd.
 Chenopodium acuminatum var. minimum
 Chenopodium acutifolium
 Chenopodium aegyptiacum
 Chenopodium aellenianum
 Chenopodium agreste
 Chenopodium albescens
 Chenopodium album L.
 Chenopodium album f. cymigerum
 Chenopodium album f. dubium
 Chenopodium album f. glomerulosum
 Chenopodium album subsp. album
 Chenopodium album subsp. amaranticolor
 Chenopodium album subsp. borbasii
 Chenopodium album subsp. collinsii
 Chenopodium album subsp. concatenatum
 Chenopodium album subsp. densifoliatum
 Chenopodium album subsp. diversifolium
 Chenopodium album subsp. hastatum
 Chenopodium album subsp. pedunculare
 Chenopodium album subsp. quinoa
 Chenopodium album subsp. reticulatum
 Chenopodium album var. acuminatum
 Chenopodium album var. album
 Chenopodium album var. berlandieri
 Chenopodium album var. coronatum
 Chenopodium album var. cymigerum
 Chenopodium album var. dacoticum
 Chenopodium album var. desertorum
 Chenopodium album var. lepthophyllum
 Chenopodium album var. leptophyllum
 Chenopodium album var. missouriense
 Chenopodium album var. opulifolium
 Chenopodium album var. polymorphum
 Chenopodium album var. purpurascens
 Chenopodium album var. quinoa
 Chenopodium album var. reticulatum
 Chenopodium album var. spicatum
 Chenopodium album var. stevensii
 Chenopodium album var. striatiforme
 Chenopodium album var. subaphyllum
 Chenopodium album var. viride
 Chenopodium alexandrinum
 Chenopodium allanii 
 Chenopodium altissimum
 Chenopodium amarantifolium
 Chenopodium ambiguum
 Chenopodium ambiguum var. ambiguum
 Chenopodium ambiguum var. majus
 Chenopodium ambiguum var. minus
 Chenopodium amboanum
 Chenopodium ambrosioides L. 
 Chenopodium ambrosioides subsp. burkartii
 Chenopodium ambrosioides subsp. chilense
 Chenopodium ambrosioides subsp. eu ambrosioides
 Chenopodium ambrosioides subsp. obovatum
 Chenopodium ambrosioides subsp. pinnatifidum
 Chenopodium ambrosioides subsp. retusum
 Chenopodium ambrosioides subsp. suffruticosum
 Chenopodium ambrosioides subsp. venturii
 Chenopodium ambrosioides var. ambrosioides
 Chenopodium ambrosioides var. andicola
 Chenopodium ambrosioides var. angustifolium
 Chenopodium ambrosioides var. anthelminticum
 Chenopodium ambrosioides var. chilensis
 Chenopodium ambrosioides var. costei
 Chenopodium ambrosioides var. dentatum
 Chenopodium ambrosioides var. denudatum
 Chenopodium ambrosioides var. eu chilense
 Chenopodium ambrosioides var. genuina
 Chenopodium ambrosioides var. graveolens
 Chenopodium ambrosioides var. incisum
 Chenopodium ambrosioides var. integrifolium
 Chenopodium ambrosioides var. oblanceolata
 Chenopodium ambrosioides var. obovata
 Chenopodium ambrosioides var. oboyata
 Chenopodium ambrosioides var. pinnatifidum
 Chenopodium ambrosioides var. querciforme
 Chenopodium ambrosioides var. suffruticosum
 Chenopodium ambrosioides var. typica
 Chenopodium ambrosioides var. vagans
 Chenopodium ameghinoi
 Chenopodium americanum
 Chenopodium amurense
 Chenopodium andicola
 Chenopodium angulatum
 Chenopodium angulosum
 Chenopodium angustifolium
 Chenopodium anidiophyllum
 Chenopodium antarcticum
 Chenopodium anthelminticum
 Chenopodium anthelminticum var. glabratum
 Chenopodium anthelminticum var. hastatum
 Chenopodium anthelminticum var. subhirsutum
 Chenopodium arenarium
 Chenopodium aridum
 Chenopodium aristatum L.
 Chenopodium aristatum f. muticum
 Chenopodium aristatum var. inerme
 Chenopodium arizonicum
 Chenopodium aromaticum
 Chenopodium arrectum
 Chenopodium asphalticum
 Chenopodium astracanium
 Chenopodium atripliciforme
 Chenopodium atriplicinum
 Chenopodium atriplicis
 Chenopodium atrovirens Rydb.
 Chenopodium augustanum
 Chenopodium auricomiforme
 Chenopodium auricomum
 Chenopodium australasicum
 Chenopodium australe
 Chenopodium ayare
 Chenopodium baccatum (Syn. Rhagodia baccata) 
 Chenopodium badachschanicum
 Chenopodium baryosmum
 Chenopodium basileense
 Chenopodium bechererianum
 Chenopodium benghalense
 Chenopodium berlandieri Moq.
 Chenopodium berlandieri subsp. berlandieri
 Chenopodium berlandieri subsp. boscianum
 Chenopodium berlandieri subsp. esauae
 Chenopodium berlandieri subsp. eu berlandieri
 Chenopodium berlandieri subsp. ludwigianum
 Chenopodium berlandieri subsp. nuttalliae (Saff.) H.D.Wilson & Heiser
 Chenopodium berlandieri subsp. platyphyllum
 Chenopodium berlandieri subsp. pseudo petiolare
 Chenopodium berlandieri subsp. zschackei
 Chenopodium berlandieri var. boscianum
 Chenopodium berlandieri var. bushianum
 Chenopodium berlandieri var. californicum
 Chenopodium berlandieri var. coloradense
 Chenopodium berlandieri var. farinosum
 Chenopodium berlandieri var. foetens
 Chenopodium berlandieri var. glaucoviride
 Chenopodium berlandieri var. macrocalycium
 Chenopodium berlandieri var. opulifoliforme
 Chenopodium berlandieri var. sinuatum
 Chenopodium berlandieri var. texanum
 Chenopodium berlandieri var. typicum
 Chenopodium berlandieri var. zschackii
 Chenopodium bernburgense
 Chenopodium betaccum
 Chenopodium betaceum
 Chenopodium betulifolium
 Chenopodium bicolor
 Chenopodium biebersteinianum
 Chenopodium biforme
 Chenopodium binzianum
 Chenopodium bipinnatifidum
 Chenopodium bisaeriale
 Chenopodium blackianum
 Chenopodium blitoides
 Chenopodium blitum
 Chenopodium blomianum
 Chenopodium bolivianum
 Chenopodium bonariense
 Chenopodium bontei
 Chenopodium bontei var. bontei
 Chenopodium bontei var. cristatiforme
 Chenopodium bontei var. submelanocarpum
 Chenopodium bonus-henricus L.
 Chenopodium borbasiforme
 Chenopodium borbasioides
 Chenopodium boscianum
 Chenopodium botrydium
 Chenopodium botryodes
 Chenopodium botryoides
 Chenopodium botrys L.
 Chenopodium browneanum
 Chenopodium bryoniaefolium
 Chenopodium buchanani
 Chenopodium burkartii
 Chenopodium bushianum
 Chenopodium bushianum var. cinerascens
 Chenopodium calceoliforme
 Chenopodium californicum (S. Wats.) S. Wats.
 Chenopodium camphorataefolium
 Chenopodium camphorosmoides
 Chenopodium candicans
 Chenopodium candolleanum (Syn.: Rhagodia candolleana)
 Chenopodium canihua
 Chenopodium cantabricum
 Chenopodium capillare
 Chenopodium capitatum (L.) Ambrosi
 Chenopodium capitatum var. parvicapitatum
 Chenopodium carinatum
 Chenopodium carinatum var. carinatum
 Chenopodium carinatum var. melanocarpum
 Chenopodium carnosulum Moq.
 Chenopodium carnosulum var. patagonicum
 Chenopodium caroxylon
 Chenopodium carthagenense
 Chenopodium catenulatum
 Chenopodium caudatum
 Chenopodium ccoyto
 Chenopodium centrorubrum
 Chenopodium ceretanum
 Chenopodium chamrium
 Chenopodium chaudana
 Chenopodium chenopodioides (L.) Aellen
 Chenopodium chenopodioides var. degenianum
 Chenopodium chenopodioides var. lengyelianum
 Chenopodium chilense
 Chenopodium chilense var. angustifolium
 Chenopodium chilense var. denudata
 Chenopodium chilense var. incisa
 Chenopodium christii
 Chenopodium christii var. christii
 Chenopodium christii var. intermedium
 Chenopodium christii var. semiconnatum
 Chenopodium chrysomelanospermum
 Chenopodium chysomelanospermum
 Chenopodium cinereum
 Chenopodium citriodorum
 Chenopodium clemente
 Chenopodium cochlearifolium
 Chenopodium cochleariifolium
 Chenopodium collae
 Chenopodium conardii
 Chenopodium concatenatum
 Chenopodium concatenatum subsp. striatiforme
 Chenopodium congestum
 Chenopodium congolanum
 Chenopodium cordobense
 Chenopodium corispermifolium
 Chenopodium cornutum
 Chenopodium coronopodum
 Chenopodium coronopus
 Chenopodium covillei
 Chenopodium crassifolium
 Chenopodium crassifolium var. degenianum
 Chenopodium crassifolium var. lengyelianum
 Chenopodium cristatum (F. Muell.) F. Muell.
 Chenopodium cristatum var. cristatum
 Chenopodium cristatum var. holopterum
 Chenopodium crusoeanum
 Chenopodium cuneifolium
 Chenopodium curvispicatum
 Chenopodium cyanifolium
 Chenopodium cycloides A. Nels.
 Chenopodium dacoticum
 Chenopodium deltaphyllum
 Chenopodium deltoideum
 Chenopodium desertorum
 Chenopodium desertorum subsp. anidiophyllum
 Chenopodium desertorum subsp. desertorum
 Chenopodium desertorum subsp. microphyllum
 Chenopodium desertorum subsp. rectum
 Chenopodium desertorum subsp. virosum
 Chenopodium desiccatum A. Nels.
 Chenopodium desiccatum var. leptophylloides
 Chenopodium detestans
 Chenopodium dethardingianum
 Chenopodium didum
 Chenopodium dissectum
 Chenopodium divaricatum
 Chenopodium diversifolium
 Chenopodium diversifolium var. montuosum
 Chenopodium drucei
 Chenopodium drummondii (Syn.: Rhagodia drummondii)
 Chenopodium eremaea (Syn.: Rhagodia eremaea)
 Chenopodium erosum R.Br.
 Chenopodium ficifolium – fig-leaved goosefoot, small goosefoot
 Chenopodium foggii – Fogg's goosefoot
 Chenopodium fremontii – Fremont's goosefoot
 Chenopodium giganteum D.Don – tree spinach
 Chenopodium gigantospermum 
 Chenopodium hastatum (Syn.: Rhagodia hastata)
 Chenopodium hians
 Chenopodium iljinii
 Chenopodium incanum – mealy goosefoot
 Chenopodium latifolium (Syn.: Rhagodia latifolia)
 Chenopodium leptophyllum – narrowleaf goosefoot

 Chenopodium littoreum
 Chenopodium missouriense – Missouri goosefoot (sometimes considered a variety of C. album)
 Chenopodium neomexicanum 
 Chenopodium nevadense 
 Chenopodium nitrariaceum (F.Muell.) F.Muell. ex Benth. – nitre goosefoot
 Chenopodium nutans (Syn.: Rhagodia nutans)
 Chenopodium nuttalliae – huauzontle
 Chenopodium oahuense – Āheahea (Hawaii)
 Chenopodium opulifolium Schrad. ex W.D.J.Koch – grey goosefoot
 Chenopodium pallescens 
 Chenopodium pallidicaule – kañiwa
 Chenopodium pamiricum
 Chenopodium parabolicum (Syn.: Rhagodia parabolica)
 Chenopodium petiolare 
 Chenopodium polygonoides 
 Chenopodium pratericola Rydb. – pale goosefoot, desert goosefoot, narrowleaf goosefoot
 Chenopodium preissii (Syn. Rhagodia preissii)
 Chenopodium probstii Aellen
 Chenopodium purpurascens – purple goosefoot
 Chenopodium quinoa – quinoa
 Chenopodium retusum
 Chenopodium salinum – Rocky Mountain goosefoot
 Chenopodium spinescens (Syn. Rhagodia spinescens)
 Chenopodium standleyanum – Standley's goosefoot
 Chenopodium strictum Roth
 Chenopodium subglabrum – smooth arid goosefoot, smooth goosefoot
 Chenopodium suecicum – green goosefoot
 Chenopodium triandrum (Syn.: Rhagodia triandra)
 Chenopodium trigonon (Syn.: Einadia trigonos)
 Chenopodium truncatum
 Chenopodium ulicinum
 Chenopodium vulvaria – stinking goosefoot, notchweed
 Chenopodium watsonii – Watson's goosefoot
 Chenopodium wilsonii (Syn.: Rhagodia crassifolia)

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Tham khảo
 
 
 
 

Chenopodium
Chenopodium là chi thực vật có hoa trong họ Amaranthaceae . Các loài Chenopodium × variabile Aellen (C . album × C . berlandieri) Chenopodium acerifolium Chenopodium acerifolium f . morarii Chenopodium acicularis Chenopodium acuminatum Willd . Chenopodium acuminatum var . minimum Chenopodium acutifolium Chenopodium aegyptiacum Chenopodium aellenianum Chenopodium agreste Chenopodium albescens Chenopodium album L . Chenopodium album f . cymigerum Chenopodium album f . dubium Chenopodium album f . glomerulosum Chenopodium album subsp . album Chenopodium album subsp . amaranticolor Chenopodium album subsp . borbasii Chenopodium album subsp . collinsii Chenopodium album subsp . concatenatum Chenopodium album subsp . densifoliatum Chenopodium album subsp . diversifolium Chenopodium album subsp . hastatum Chenopodium album subsp . pedunculare Chenopodium album subsp . quinoa Chenopodium album subsp . reticulatum Chenopodium album var . acuminatum Chenopodium album var . album Chenopodium album var . berlandieri Chenopodium album var . coronatum Chenopodium album var . cymigerum Chenopodium album var . dacoticum Chenopodium album var . desertorum Chenopodium album var . lepthophyllum Chenopodium album var . leptophyllum Chenopodium album var . missouriense Chenopodium album var . opulifolium Chenopodium album var . polymorphum Chenopodium album var . purpurascens Chenopodium album var . quinoa Chenopodium album var . reticulatum Chenopodium album var . spicatum Chenopodium album var . stevensii Chenopodium album var . striatiforme Chenopodium album var . subaphyllum Chenopodium album var . viride Chenopodium alexandrinum Chenopodium allanii Chenopodium altissimum Chenopodium amarantifolium Chenopodium ambiguum Chenopodium ambiguum var . ambiguum Chenopodium ambiguum var . majus Chenopodium ambiguum var . minus Chenopodium amboanum Chenopodium ambrosioides L . Chenopodium ambrosioides subsp . burkartii Chenopodium ambrosioides subsp . chilense Chenopodium ambrosioides subsp . eu ambrosioides Chenopodium ambrosioides subsp . obovatum Chenopodium ambrosioides subsp . pinnatifidum Chenopodium ambrosioides subsp . retusum Chenopodium ambrosioides subsp . suffruticosum Chenopodium ambrosioides subsp . venturii Chenopodium ambrosioides var . am brosioides Chenopodium ambrosioides var . andicola Chenopo dium ambrosioides var . angustifolium Chenopodium ambrosioides var . anthelminticum Chenopodium ambrosioides var . chilensis Chenopodium ambrosioides var . costei Chenopo dium ambrosioides var . dentatum Chenopodium ambrosioides var . denudatum Chenopodium ambrosioides var . eu chilense Chenopo dium ambrosioides var . genuina Chenopodium ambrosioides var . graveolens Chenopodium ambrosioides var . incisum Chenopodium ambrosioides var . integrifolium Chenopodium ambrosioides var . oblanceolata Chenopodium ambrosioides var . obovata Chenopodium ambrosioides var . oboyata Chenopodium ambrosioides var . pinnatifidum Chenopodium ambrosioides var . querciforme Chenopo dium ambrosioides var . suffruticosum Chenopodium ambrosioides var . typica Chenopodium ambrosioides var . vagans Chenopo dium ameghinoi Chenopodium americanum Chenopodium amurense Chenopodium andicola Chenopodium angulatum Chenopodium ang ulosum Chenopodium angustifolium Chenopodium ani diophyllum Chenopodium antarcticum Chenopodium anthelminticum Chenopodium anthelminticum var . gla bratum Chenopodium anthelminticum var . hastatum Chenopodium anthelminticum var . subhirsutum Chenopodium arena rium Chenopodium aridum Chenopodium aristatum L . Chenopodium aristatum f . muticum Chenopodium aristatum var . inerme Chenopodium arizonicum Chenopodium aromaticum Chenopodium arrectum Chenopodium asphalticum Chenopodium astracanium Chenopodium atripliciforme Chenopodium atriplicinum Chenopodium atriplicis Chenopodium atrovirens Rydb . Chenopodium augustanum Chenopodium auricomiforme Chenopodium auricomum Chenopodium australasicum Chenopodium australe Chenopodium ayare Chenopodium baccatum (Syn . Rhagodia baccata) Chenopodium badachschanicum Chenopodium baryosmum Chenopodium basileense Chenopodium bechererianum Chenopodium benghalense Chenopodium berlandieri Moq . Chenopodium berlandieri subsp . berlandieri Chenopodium berlandieri subsp . boscianum Chenopodium berlandieri subsp . esauae Chenopo dium berlandieri subsp . eu berlandieri Chenopodium berlandieri subsp . ludwigianum Chenopodium berlandieri subsp . nuttalliae (Saff .) H. D.Wilson & Heiser Chenopodium berlandieri subsp . platyphyllum Chenopodium berlandieri subsp . pseudo petiolare Chenopodium berlandieri subsp . zschackei Chenopodium berlandieri var . boscianum Chenopodium berlandieri var . bushianum Chenopodium berlandieri var . californicum Chenopodium berlandieri var . coloradense Chenopodium berlandieri var . farinosum Chenopodium berlandieri var . foetens Chenopodium berlandieri var . glaucoviride Chenopodium berlandieri var . macrocalycium Chenopodium berlandieri var . opulifoliforme Chenopodium berlandieri var . sinuatum Chenopodium berlandieri var . texanum Chenopodium berlandieri var . typicum Chenopodium berlandieri var . zschackii Chenopodium bernburgense Chenopodium betaccum Chenopodium betaceum Chenopodium betulifolium Chenopodium bicolor Chenopodium biebersteinianum Chenopodium biforme Chenopo dium binzianum Chenopodium bipinnatifidum Chenopodium bisaeriale Chenopodium blackianum Chenopodium blitoides Chenopodium blitum Chenopodium blomianum Chenopodium bolivianum Chenopodium bonariense Chenopodium bontei Chenopodium bontei var . bontei Chenopodium bontei var . cristatiforme Chenopodium bontei var . submelanocarpum Chenopodium bonus-henricus L . Chenopodium borbasiforme Chenopodium borbasioides Chenopodium boscianum Chenopodium botrydium Chenopodium botryodes Chenopodium botryoides Chenopodium botrys L . Chenopodium browneanum Chenopodium bryoniaefolium Chenopodium buchanani Chenopodium burkartii Chenopodium bushianum Chenopodium bushianum var . cinerascens Chenopo dium calceoliforme Chenopo dium californicum (S . Wats .) S . Wats . Chenopodium camphorataefolium Chenopodium camphorosmoides Chenopodium candicans Chenopo dium candolleanum (Syn . : Rhagodia candolleana) Chenopodium canihua Chenopodium canta bricum Chenopodium capillare Chenopodium capitatum (L .) Am brosi Chenopodium capitatum var . parvicapitatum Chenopodium carinatum Chenopodium carinatum var . carinatum Chenopodium carinatum var . melanocarpum Chenopodium carnosulum Moq . Chenopodium carnosulum var . patagonicum Chenopodium caroxylon Chenopodium carthagenense Chenopodium catenulatum Chenopodium caudatum Chenopodium ccoyto Chenopodium centrorubrum Chenopodium ceretanum Chenopodium chamrium Chenopodium chaudana Chenopodium chenopodioides (L .) Aellen Chenopodium chenopodioides var . degenianum Chenopodium chenopodioides var . lengyelianum Chenopodium chilense Chenopodium chilense var . angustifolium Chenopodium chilense var . denudata Chenopodium chilense var . incisa Chenopodium christii Chenopodium christii var . christii Chenopodium christii var . intermedium Chenopodium christii var . semiconnatum Chenopodium chrysomelanospermum Chenopodium chysomelanospermum Chenopodium cinereum Chenopodium citriodorum Chenopodium clemente Chenopodium cochlearifolium Chenopodium cochleariifolium Chenopodium collae Chenopodium conardii Chenopodium concatenatum Chenopodium concatenatum subsp . striatiforme Chenopo dium congestum Chenopodium congolanum Chenopodium cordobense Chenopodium corispermifolium Chenopodium cornutum Chenopodium coronopodum Chenopodium coronopus Chenopodium covillei Chenopodium crassifolium Chenopodium crassifolium var . degenianum Chenopodium crassifolium var . lengyelianum Chenopodium cristatum (F . Muell .) F . Muell . Chenopodium cristatum var . cristatum Chenopodium cristatum var . holopterum Chenopodium crusoeanum Chenopodium cuneifolium Chenopodium curvispicatum Chenopodium cyanifolium Chenopodium cycloides A . Nels . Chenopo dium dacoticum Chenopodium deltaphyllum Chenopodium deltoideum Chenopodium desertorum Chenopodium desertorum subsp . anidiophyllum Chenopodium desertorum subsp . desertorum Chenopodium desertorum subsp . microphyllum Chenopodium desertorum subsp . rectum Chenopodium desertorum subsp . virosum Chenopodium desiccatum A . Nels . Chenopodium desiccatum var . leptophylloides Chenopodium detestans Chenopo dium dethardingianum Chenopodium didum Chenopodium dissectum Chenopo dium divaricatum Chenopodium diversifolium Chenopodium diversifolium var . montuosum Chenopodium drucei Chenopodium drummondii (Syn . : Rhagodia drummondii) Chenopodium eremaea (Syn . : Rhagodia eremaea) Chenopodium erosum R.Br . Chenopodium ficifolium – fig-leaved goosefoot , small goosefoot Chenopodium foggii – Fogg ' s goosefoot Chenopodium fremontii – Fremont 's goosefoot Chenopodium giganteum D.Don – tree spinach Chenopodium gigantospermum Chenopodium hastatum (Syn . : Rhagodia hastata) Chenopo dium hians Chenopo dium iljinii Chenopodium incanum – mealy goosefoot Chenopodium latifolium (Syn . : Rhagodia latifolia) Chenopodium leptophyllum – narrowleaf goosefoot Chenopodium littoreum Chenopodium missouriense – Missouri goosefoot (sometimes considered a variety of C . album) Chenopodium neomex icanum Chenopodium neva dense Chenopodium nitrariaceum (F . Muell .) F . Muell . ex Benth . – nitre goosefoot Chenopodium nutans (Syn . : Rhagodia nutans) Chenopodium nuttalliae – huauzontle Chenopodium oahuense – Āheahea (Hawaii) Chenopo dium opulifolium Schrad . ex W.D.J.Koch – grey goosefoot Chenopodium pallescens Chenopodium palli dicaule – kañiwa Chenopodium pami ricum Chenopodium para bolicum (Syn . : Rhagodia parabolica) Chenopodium petiolare Chenopodium polygonoides Chenopodium pratericola Rydb . – pale goosefoot , desert goosefoot , narrowleaf goosefoot Chenopodium preissii (Syn . Rhagodia preissii) Chenopodium probstii Aellen Chenopo dium purpurascens – purple goosefoot Chenopodium quinoa – quinoa Chenopodium retusum Chenopodium salinum – Rocky Mountain goosefoot Chenopodium spinescens (Syn . Rhagodia spinescens) Chenopodium standleyanum – Standley ' s goosefoot Chenopodium strictum Roth Chenopodium subgla brum – smooth arid goosefoot , smooth goosefoot Chenopodium suecicum – green goosefoot Chenopodium triandrum (Syn . : Rhagodia triandra) Chenopodium trigonon (Syn . : Einadia trigonos) Chenopodium truncatum Chenopodium ulicinum Chenopodium vulvaria – stinking goosefoot , notchweed Chenopodium watsonii – Watson 's goosefoot Chenopodium wilsonii (Syn . : Rhagodia crassifolia) Hình ảnh Chú thích Tham khảo Chenopodium