Sunday, May 3, 2015

Cirsium texanum

Common name: Texas thistle
Family: Asteraceae
Size: Up to 1.5 m tall
Description: Upright, spiny, woolly
Habitat: Several soils




Flower:

  • 3.8 across
  • Ray flowers absent, disk flowers numerous,
  • Color purple-rose to pink held in cup of prickly-tipped bracts.
  • Heads solitary at tips of long, woolly, almost leafless stalks

























Stem and leaves:

  • Leaves 10-30 cm long
  • Alternate, numerous, clasping stem at base, lower surface with whitish hairs
  • Blade with triangular or rounded lobes on each side, each lobed irregularly spiny-toothed
  • Basal leaves larger, upper leaves smaller
  • Stem solitary, much-branched in upper portion


No comments:

Post a Comment