Robert W. Freckmann Herbarium


  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
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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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