Croptilon hookerianum explained

Croptilon hookerianum, called Hooker's scratchdaisy, is a North American species of flowering plants in the tribe Astereae within the family Asteraceae. It has been found in the US states of Texas, Oklahoma, Kansas, and Arkansas.^[1]

Croptilon hookerianum is an herb sometimes reaching a height of 120 cm (4 feet). Flower heads are yellow, with both ray florets and disc florets.^[2]

Varieties

• Croptilon hookerianum var. graniticum (E.B.Sm.) E.B.Sm. - Texas
• Croptilon hookerianum var. hookerianum - Texas
• Croptilon hookerianum var. validum (Rydb.) E.B.Sm. - Arkansas, Kansas, Oklahoma, Texas

Notes and References

1. http://bonap.net/MapGallery/County/Croptilon%20hookerianum.png Biota of North America Program 2014 county distribution map
2. Web site: Croptilon rigidifolium in Flora of North America @ efloras.org . 2023-08-08 . www.efloras.org.