Hymenothrix wislizeni explained

Hymenothrix wislizeni, the Trans-Pecos thimblehead, is a North American species of flowering plant in the daisy family. It grows in northwestern Mexico (Baja California, Sonora, Chihuahua) and the southwestern United States (far western Texas, Arizona, New Mexico).^{[1] [2]}

Hymenothrix wislizeni is an annual herb up to 70cm (30inches) tall. Each head has 15-30 yellow or cream-colored disc flowers surrounded by 8-12 yellow ray flowers.^{[3] [4]}

External links

• Photo of herbarium specimen at Missouri Botanical Garden, collected in Chihuahua in 1846, type specimen for Hymenothrix wislizeni

Notes and References

1. http://bonap.net/MapGallery/County/Hymenothrix%20wislizeni.png Biota of North America Program 2014 county distribution map
2. http://swbiodiversity.org/seinet/taxa/index.php?taxon=3988 SEINet, Southwestern Biodiversity, Arizona chapter
3. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=220006670 Flora of North America, Hymenothrix wislizeni A. Gray, 1849.
4. https://www.biodiversitylibrary.org/page/14225869#page/114/mode/1up Gray, Asa. 1849. Memoirs of the American Academy of Arts and Science, new series 4(1): 102