11. "Helianthus anomalus " is of particular interest due to its genetics. 12. "Helianthus neglectus " grows on sand dunes and other sandy soil. 13. The species is economically important on " Helianthus annuus " in North America. 14. That part is accurate, because Jerusalem artichoke indeed is a sunflower ( Helianthus tuberosus ). 15. "Helianthus angustifolius " is often cultivated for its bright, showy yellow flowers. 16. "Helianthus radula " grows in sandy, open woodlands such as pine barrens. 17. "Helianthus resinosus " grows in open swamps and meadows, and along roadsides. 18. Wild " Helianthus annuus " is a widely branched annual plant with many flower heads. 19. "Helianthus pumilus " grows on dry rocky soil in the mountains and nearby plains. 20. The woodland sunflower is similar to " Helianthus hirsutus ", but its stem is rough.
