Hieracium abscissum explained

Hieracium abscissum is a species of plant in the tribe Cichorieae within the family Asteraceae. It is considered to be native to the south-western United States (Arizona and New Mexico), Mexico and Central America.^{[1] [2] [3] [4] [5]}

Hieracium abscissum is herbaceous and up to 75cm (30inches) tall, with leaves on the stem and also in a rosette at the bottom. Leaves are lance-shaped, up to 20cm (10inches) long, sometimes with teeth along the edge. One stalk branches toward the top, producing 5-60 flower heads. Each head has 20-24 yellow ray flowers but no disc flowers.^[6]

External links

• Line drawing for Flora of Panamá
• Photo of herbarium specimen collected in Nuevo León in 1992

Notes and References

1. http://bonap.net/MapGallery/County/Hieracium%20abscissum.png Biota of North America Program 2014 county distribution map
2. Nash, D. L. 1976. Tribe XI, Cichorieae. In Nash, D.L. & Williams, L.O. (eds), Flora of Guatemala - Part XII. Fieldiana, Botany 24(12): 440–454, 598–603
3. García-Mendoza, A. J. & J. A. Meave. 2011. Diversidad Florística de Oaxaca: de Musgos a Angispermas 1–351. Universidad Nacional Autónoma de México, Ciudad Universitaria
4. Correa A., M.D., C. Galdames & M. Stapf. 2004. Catálogo de las Plantas Vasculares de Panamá 1–599. Smithsonian Tropical Research Institute, Panamá
5. http://swbiodiversity.org/seinet/taxa/index.php?taxon=27480&taxauthid=1 SEINet, Southwestern Biodiversity, Arizona chapter
6. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066933 Flora of North America, Hieracium abscissum Lessing, 1830.