AskDefine | Define turtleback

User Contributed Dictionary

English

Alternative forms

Noun

  1. Anything having the shape of a turtle's back (that is, its shell.)
  2. A library binding of a mass market paperback with a generic hardcover.
  3. A common name for plants of the genus Psathyrotes of annual and perennial forbs and low subshrubs native to dry areas of southwestern North America.

Extensive Definition

Psathyrotes is a genus of 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

  • Psathyrotes annua (Nutt.) Gray (annual psathyrotes, mealy rosettes, turtleback)
    • Synonyms: Bulbostylis annua Nutt.
    • Annual or perennial forb
  • Psathyrotes pilifera Gray (hairy-beast turtleback, hairybeast brittlestem)
    • Annual forb
  • Psathyrotes ramosissima (Torr.) Gray (velvet rosette, velvet turtleback, turtleback)
    • Synonyms: Tetradymia ramosissima Torr.
    • Annual or perennial forb or subshrub
  • Psathyrotes scaposa Gray (naked turtleback)
    • Synonyms: Psathyrotopsis scaposa (Gray) H.E. Robins.
    • Annual or perennial forb

References and external links

  • [http://www.itis.usda.gov:8080/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=38292 ITIS report]
  • Jepson Manual treatment
turtleback in Spanish: Psathyrotes
turtleback in Portuguese: Psathyrotes
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