| Helianthus annuus L. | |||
| |||
| Family | Compositae — APG family: Asteraceae | ||
| Common name | sunflower | ||
| Description | Stem coarse, up to more than 2 meters tall, erect, simple or branched, scabrous- hispid; leaves broadly cordate-ovate to elliptic, long-petiolated; heads large, with orange-yellow rays and dark disk; involucral bracts broad, spreading, ciliate; paleae of receptacle 3-cleft. | ||
| Ecology | Escaped from cultivation. Described from Peru and Mexico. | ||
| Taxonomy notes | Cultivated and escaped or occurring as a weed in many countries; range indi- cated on circumpolar map is fragmentary. |
This is a digital representation of Eric Hultén’s ‘Flora of Alaska and Neighboring Territories: A Manual of the Vascular Plants’, which was published by Stanford University Press in 1968. The book was digitized by C. Webb (at UAMN) as part of the Flora of Alaska project, with funding by the US NSF (Grant 1759964 to Ickert-Bond & Webb), and with permission of Stanford University Press. Data and images © 1968 Board of Trustees of the Leland Stanford Jr. Univ. Usage licence: Creative Commons BY-NC-SA 4.0. NB: You may find OCR errors; please refer to the hard-copy if in doubt.