Robert W. Freckmann Herbarium

Attention

Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at http://wisflora.herbarium.wisc.edu/. Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

Please direct any comments to wisconsin.state.herbarium@gmail.com.

Thank you.


  Helianthus X laetiflorus Pers. (pro sp.) image
Photographer: Gary Fewless           
Family Asteraceae
Helianthus X laetiflorus Pers. (pro sp.)
cheerful sunflower, hybrid prairie sunflower, mountain 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
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, perennial, 1 1/2'-8' tall forb; rough stems usually leafless near the top
Flower: head 2" - 3 1/2" wide, 10-21 yellow rays, disk often yellow; inflorescence of one to a few heads on long stalks; blooms Aug.-Sept.
Leaf:2 1/2 to 8 times as long as wide, mostly all opposite, up to 9-15 pairs below the inflorescence, tapering to a long stalk
Habitat: full sun; dry; roadsides, disturbed areas
Notes: very similar to H. pauciflorus but with longer leaf stalks and often yellow disks
(Glossary)

More Information Natural Communities Herbarium Specimens
All Helianthus list Google- Images or Text
Synonyms 
(PARENTS = Helianthus pauciflorus Nutt. subsp. subrhomboideus (Rydb.) O.Spring & E.E.Schill. X H. tuberosus L.)
Helianthus laetiflorus Pers.
Helianthus scaberrimus Elliott

         
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