Heliopsis helianthoides

Heliopsis helianthoides

Secure  (NatureServe)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Genus: Heliopsis
Species: H. helianthoides
Binomial name
Heliopsis helianthoides
(L.) Sweet
Synonyms[1]

Heliopsis helianthoides is a species of flowering plant in the family Asteraceae, known by the common names rough oxeye,[2] smooth oxeye[3] and false sunflower.[4] It is native to eastern and central North America from Saskatchewan east to Newfoundland and south as far as Texas, New Mexico, and Georgia.[5][6][7]

Heliopsis helianthoides is a rhizomatous herbaceous perennial growing 40–150 cm (16–59 in) tall. The toothed leaf blades are oval to triangular or lance-shaped and may be smooth or hairy or rough in texture. The flowers are produced from midsummer to early autumn (fall).[8] The inflorescence contains one to many composite flowerheads. Each head contains yellow ray florets which are generally 2–4 cm (0.8-1.6 inches) long. At the center are many yellow to brownish disc florets. The fruit is an achene about 5 mm long.[5]

In the wild, H. helianthoides may be found in wooded areas and tallgrass prairie, and sometimes along roadsides.[4]

It is a popular garden plant, and several cultivars are available with flowers of varying colors and shades. These include 'Summer Sun', 'Golden Plume', and 'Prairie Sunset'.[6] The following cultivars of H. helianthoides var. scabra ("rough")[9] have gained the Royal Horticultural Society's Award of Garden Merit:-

References

  1. ↑ The Plant List, Heliopsis helianthoides (L.) Sweet
  2. ↑ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-02-25. Retrieved 2014-10-17.
  3. ↑ "Heliopsis helianthoides". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 19 January 2016.
  4. 1 2 Heliopsis helianthoides. USDA NRCS Plant Guide.
  5. 1 2 Heliopsis helianthoides. Flora of North America.
  6. 1 2 Heliopsis helianthoides. Missouri Botanical Garden, Gardening help
  7. ↑ Biota of North America Program 2014 county distribution map
  8. ↑ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
  9. ↑ Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
  10. ↑ "RHS Plant Selector - Heliopsis helianthoides var. scabra 'Benzinggold'". Retrieved 21 June 2013.
  11. ↑ "RHS Plant Selector - Heliopsis helianthoides var. scabra 'Light of Loddon'". Retrieved 21 June 2013.
  12. ↑ "RHS Plant Selector - Heliopsis helianthoides var. scabra 'Spitzentänzerin'". Retrieved 21 June 2013.
  13. ↑ "RHS Plant Selector - Heliopsis helianthoides var. scabra 'Waterperry Gold'". Retrieved 21 June 2013.
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