Psathyrotes

Life-forms

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Campanulids
Ordo: Asterales

Familia: Asteraceae
Subfamilia: Asteroideae
Tribus: Helenieae
Subtribus: Psathyrotinae
Genus: Psathyrotes
Species: P. annua – P. pilifera – P. ramosissima
Name

Psathyrotes A.Gray, Smithsonian Contr. Knowl. 5(6): 100, t. 13. 1853

Type species: Psathyrotes annua (Nutt.) A. Gray.

Synonyms

Bulbostylis sect. Psathyrotus Nutt.
Pseudobartlettia Rydb.

References

Gray, A., Smithsonian Contributions to Knowledge 5(6): 100, t. 13. 1853

Links

International Plant Names Index. 2018. Psathyrotes. Published online. Accessed: January 28 2018.
The Plant List 2013. Psathyrotes in The Plant List Version 1.1. Published on the internet. Accessed: 2018 January 28.
Tropicos.org 2018. Psathyrotes. Missouri Botanical Garden. Published on the internet. Accessed: 2018 January 28.
Hassler, M. 2018. Psathyrotes. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2018. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2018 January 28. Reference page.
USDA, ARS, Germplasm Resources Information Network. Psathyrotes in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 08-Apr-12.

Vernacular names
English: turtleback, brittlestem, fanleaf
русский: Псатиротес
Psathyrotes is a genus of North American plants in the sneezeweed tribe within the sunflower family.[3] It contains annual and perennial forbs and low subshrubs native to dry areas of southwestern North America. Common names include turtleback, brittlestem, and fanleaf.

The plants are low, densely branching, hairy, and scaly, with a turpentine-like odor. Leaves are alternate and hairy. The Latin name of the genus (from the Greek psathurotes) refers to the brittleness of the stems.

Species[1][4]

Psathyrotes annua (Nutt.) Gray (annual psathyrotes, mealy rosettes, turtleback) - CA NV UT AZ ID
Synonyms: Bulbostylis annua Nutt.
Annual or perennial forb
Psathyrotes pilifera Gray (hairy-beast turtleback, hairybeast brittlestem) - NV UT AZ
Annual forb
Psathyrotes ramosissima (Torr.) Gray (velvet rosette, velvet turtleback, turtleback) - NV UT AZ CA, Baja California, Sonora
Synonyms: Tetradymia ramosissima Torr.
Annual or perennial forb or subshrub

formerly included[1]

see Peucephyllum Psathyrotopsis Trichoptilium

Psathyrotes incisa A.Gray - Trichoptilium incisum (A.Gray) A.Gray
Psathyrotes purpusii Brandegee - Psathyrotopsis purpusii (Brandegee) Rydb.
Psathyrotes scaposa A.Gray - Psathyrotopsis scaposa (A.Gray) H.Rob.
Psathyrotes schottii (A.Gray) A.Gray - Peucephyllum schottii A.Gray

References

Flann, C (ed) 2009+ Global Compositae Checklist Archived 2015-01-02 at archive.today
Tropicos, Psathyrotes (Nutt.) A. Gray
Gray, Asa. 1853. Smithsonian Contributions to Knowledge 5(6): 100
Biota of North America Program 2013 county distribution maps