Impatiens pallida Nutt. - Pale Touch-me-not


 

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Impatiens pallida - (image 1 of 6)

 

Taxonomy

Family: Balsaminaceae

Habitat

Mesic woods, shaded floodplains.

Associates

 

Distribution

New England and adjacent Canada, west to MN and and Dakotas, south GA to OK.

Morphology

Annual to 5'. Leaves mostly alternate but sometimes opposite, simple, ovate, cuneate, on distinct petioles, the teeth broadly rounded and mucronate, those of flowering branches usually more than 8cm long. Stems glabrous, translucent, succulent. Flowers pale yellow, the fully developed spur less than 6mm long. Fruit a capsule that explodes when mature; seeds brown.

Notes

Flowers early July to late September

Wetland indicator: Facultative wetland

Pale forms of I. capensis could be confused for this species, but the spur of the former is never more than 6mm long. The leaves and flowers of I. pallida also tend to be a little larger, and it is rarely found in open sunny locations.

References

Dirr, Michael A. 1998. Manual of Woody Landscape Plants:
Their Identification, Ornamental Characteristics, Culture, Propagation and Uses.
5th ed. Champaign, Illiois: Stipes Publishing L.L.C.

 

Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.
 


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 Michael Hough 2005