| Family Asteraceae (click for list of genera only) | |
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Ambrosia L.
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ragweed (DISTRIBUTION MAP GALLERY of SPECIES) | |
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Ambrosia artemisiifolia L.
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annual bur-sage, common ragweed, short ragweed Ambrosia artemisiifolia L. var. elatior (L.) Descourt. Ambrosia artemisiifolia L. var. elatior (L.) Descourt. f. villosa Fernald & Griscom Ambrosia elatior L. Ambrosia media Rydb. |
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Ambrosia X intergradiens W.H.Wagner
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intergrading ragweed (PARENTS = Ambrosia artemisiifolia L. X A. psilostachya DC.) Ambrosia artemisiifolia L. X A. psilostachya DC. | |
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Ambrosia psilostachya DC.
* +
perennial ragweed, western ragweed Ambrosia californica Rydb. Ambrosia coronopifolia Torr. & A.Gray Ambrosia coronopifolia Torr. & A.Gray var. asperula A.Gray Ambrosia coronopifolia Torr. & A.Gray var. gracilis A.Gray Ambrosia cumanensis Kunth Ambrosia lindheimeriana Scheele Ambrosia psilostachya DC. var. californica (Rydb.) S.F.Blake Ambrosia psilostachya DC. var. coronopifolia (Torr. & A.Gray) Farw. ex Fernald Ambrosia psilostachya DC. var. lindheimeriana (Scheele) Blank. Ambrosia rugelii Rydb. |
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Ambrosia tomentosa Nutt.
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bur ragweed, skeleton-leaf bur ragweed, skeleton-leaf bur-sage Franseria discolor Nutt. |
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Ambrosia trifida L. var. trifida
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giant ragweed, great ragweed, horse-cane Ambrosia integrifolia Muhl. ex Willd. Ambrosia striata Rydb. Ambrosia trifida L. var. integrifolia (Muhl. ex Willd.) Torr. & A.Gray Ambrosia variabilis Rydb. |
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