Carduus erosus Rydb.

  • Authority

    New York Botanical Garden. Herbarium of Dr. Per Axel Rydberg. Purchased, 1899. Contributions from the New York Botanical Garden.

  • Family

    Asteraceae

  • Scientific Name

    Carduus erosus Rydb.

  • Description

    Deprecated: mb_convert_encoding(): Handling HTML entities via mbstring is deprecated; use htmlspecialchars, htmlentities, or mb_encode_numericentity/mb_decode_numericentity instead in /home/emu/nybgweb/www-dev/htdocs/science-dev/wp-content/themes/nybgscience/lib/VHMonographsDetails.php on line 179

    Species Description - Biennial. Stem stout, about 7 dm. high, angled and striate, often red, loosely floccose when young: lower leaves about 2 dm. long, rather thin, green and slightly floccose above when young: grayish-tomentose beneath, deeply pinnatifid to about one fourth from the midrib: lobes about 2 cm. long, lanceolate, few toothed or lobed and tipped with moderately strong spines 4-10 mm. long: heads hemispherical, 2.5-3 cm. high and 2.5-3.5 cm. broad; outer bracts ovate, slightly floccose when young, entire, with a narrow dorsal line, tipped with weak spines 1-2 mm. long, the inner with dilated deltoid erose scarious acuminate tips: flowers ochroleucous.

  • Discussion

    A species closely related to the preceding, differing in the larger heads, longer spines, broader bracts and with erose instead of fimbriate tips. It grows in moist meadows at an altitude of about 2200 m.

    Colorado: Durango, 1896, Frank Tweedy, 317 (Type in U.S. Nat. Herb.).

  • Distribution

    Colorado

    Colorado United States of America North America|