Hairy Catsear
Hypochaeris radicata L. [Asteraceae]
Taxonomy of genus Hypochaeris L.
H. brasiliensis Brazilian catsear
H. glabra smooth catsear
Plant: Dandelion like, erect stems growing from a basal rossette.
Leaf: spear-shaped, narrow, not hairy
Flower-head: yellow; individual floret petal 2 x as long as broad; 5-10 mm across
H. microcephala smallhead catsear
H. radicata hairy catsear
Plant: Dandelion like, erect stems growing from a basal rossette.
Leaf: spear-shaped, narrow, hairy
Flower-head: yellow; individual floret petal 2-4 x as long as broad; 25-40 mm across
Hypochaeris L. in Hokkaido
Four species have been recorded from Japan. Only H. crepidioides is native to Japan.
H. ciliata (Thunb.) Makino (オウゴンソウ)
H. crepidioides (Miyabe et Kudo) Tatew. et Kitam. (エゾコウゾリナ)
H. glabra L. (ヒメブタナ)
H. radicata L. (ブタナ)
H. radicata in Hokkaido
[Left] a community. [Center] a flower stalk. Near Tokai University Dai-yon High School on July 31 2009. [Right] A lawn occupied by H. radicata at N20/W1, East Ward, Sapporo, on July 11 2011.
[Left] fruits (achenes). [Center] a rosette. At N28/E4, East Ward, [Left/Center] Sapporo on August 30 2009. [Right] close-up of inflorescences. At the same place on August 31 2009.
H. glabra
H. glabra. [Above three photos] taken at Margaret River, Western Australia, on Feb. 7 2004.
References
Description and nomenclature
- Missouri Botanical Garden. 1997. Manual de Plantas de Costa Rica. The Cutting Edge 4(1)
- Tsuyuzaki S & Kitayama T. 1996. Hypochoeris is a misspelling for Hypochaeris (Asteraceae). Journal of Japanese Botany 71: 302-303 Revised version JPN
- Wilson, P. & King, M. 2003. Arable plants - a field guide. WildGuides Ltd., Hampshire
Links
Hairy Catsear - by Corey Gucker
Annotated Bibliography on the Ecology and Management of Invasive Species: Hypochaeris radicata L. (synonym Hypochoeris radicata L.