Polygala senega L. - Seneca Snakeroot


 

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Polygala senega - (image 1 of 5)

 

Taxonomy

Family: Polygalaceae

Habitat

Dry, often gravelly, prairies.

Associates

Aster ericoides, Aster laevis, Cirsium discolor, Comandra umbellata, Coreopsis palmata, Dodecatheon meadia, Euphorbia corollata, Heuchera richardsonii, Hypoxis hirsuta, Lespedeza capitata, Liatris aspera, Lithospermum canescens, Oxalis violacea, Parthenium integrifolium, Pedicularis canadensis, Petalostemum purpureum, Phlox pilosa fulgida, Silphium terebinthinaceum, Solidago rigida, Sorghastrum nutans, Sporobolus heterolepsis, Stipa spartea, Zizia aptera, Zizia aurea.

Distribution

Most states east of the Rockies, absent from the southernmost states and VT.

Morphology

Low, herbaceous perennial. Leaves alternate, lanceolate to oblong, more than 3 times longer than wide, less than 1.5 cm wide. Stems several to numerous. Flowers white, in dense, elongate racemes, sessile or subsessile on pedicels less than 1mm long; sepals 5, the laterals wing-like; petals 3, forming a tube.

Notes

Flowers mid May to early July

Wetland indicator: Facultative

These plants were growing in the gravel adjacent to some defunct railroad tracks.

References

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

 

USDA, NRCS. 2002. The PLANTS Database, Version 3.5 (http://plants.usda.gov).
National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

 


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 Michael Hough 2005