Robert W. Freckmann Herbarium


  Helianthus tuberosus L. image
Photographer: Robert Bierman           

Botanical Illustration

Robert Bierman

Robert W. Freckmann

Robert W. Freckmann
Family Asteraceae
Helianthus tuberosus L.
Jerusalem-artichoke, woodland sunflower
Helianthus: derived from two Greek words helios, "sun," and anthos, "flower," in reference to the sunflower's supposed tendency to always turn toward the sun
tuberosus: from Latin meaning "tuberous," referring to thickened roots
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, perennial, 4'-10' tall forb; stems stout, roughly hairy; from rhizomes with edible tubers
Flower: head 2" -4" wide, 10-20 yellow rays, disks yellow, bracts (phyllaries) often dark-green to blackish; inflorescence of many heads in large, branched clusters; blooms Aug.-Oct.
Leaf:lower opposite, upper 2/3 alternate, usually 1 1/2" to 4" wide, rough on top and hairy below, toothed, tapering to a long, winged stalk
Habitat: moist; disturbed sites
(Glossary)

More Information Natural Communities Herbarium Specimens
All Helianthus list Ethnobotany Information Google- Images or Text

Flora of North America (off site)
Synonyms 
Helianthus subcanescens (A.Gray) E.Watson
Helianthus tomentosus Michx.
Helianthus tuberosus L. var. subcanescens A.Gray

         
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