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Great Indian Plantain - Arnoglossum reniforme

Family: Asteraceae - Aster family Genus Common Name: Indian Plantain Native Status: Native
Arnoglossum reniforme - Great Indian Plantain. Great Indian Plantain is 3 to 9 feet tall, with basal and stem leaves which are palmately lobed. The leaves can be huge. The blossoms have white disk flowers only, with 10 to 20 blossoms per terminal cluster. The involucre bracts are greenish white. The only Indian Plantain in the area where these photos were taken with palmately lobed leaves are A. atriplicifolium and A. reniforme. The identification as A. reniforme is based on the distinct ribbing on the stems, which is 'slight' on A. atriplicifolium, and the fact that the stems in this specimen are not glaucous. The leaves also are a darker green than in Pale Indian Plantain. Unfortunately I did not photograph the underside of the leaves, nor did I make notes as to whether they were glaucous or not, as they are in A. atriplicifolium, and are not glaucous in A. reniforme.

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Arnoglossum reniforme

Distribution of Arnoglossum reniforme in the United States and Canada:
USDA Plants Distribution Map temporarily unavailable.
Blue=Native; Grey=Introduced

Map from USDA Plants Database:
USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 20 Jan 2018). National Plant Data Team, Greensboro, NC 27401-4901 USA.

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Site: The Pocket at Pigeon Mountain, Walker County, GA Date: 2009-June-06Photographer: Gerald C. Williamson
Nikon D60
1/3f/16 ISO200
Tamron SP 90MM f/2.8 AF Macro
90mm (135 equiv)
Great Indian Plantain is topped by a cluster of white flowers. Each blossom is composed of only disk flowers; no ray flowers.
Arnoglossum reniforme

Site: The Pocket at Pigeon Mountain, Walker County, GA Date: 2009-June-06Photographer: Gerald C Williamson
Nikon D60
1/15f/8 ISO200
Tamron SP 90MM f/2.8 AF Macro
90mm (135 equiv) Flash: Yes
Close examination of the stem in this photo shows distinct ribbing, which led me to the A. reniforme identification. The partial leaf in bottom left can give idea how big the leaves can get. This plant is probably around 5 to 6 feet tall.
Click on the photo for a larger image
Arnoglossum reniforme

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2018
Photographs Copyright owned by the named photographer