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Species
Hypochaeris radicata L.
IUCN
NCBI
EOL Text
Perennials, 10–60 cm; taproots vertical, thick, fibrous, caudices woody. Stems (1–15) erect, usually branched (2–3 times at midstem and distally, sparsely bracteate or naked), glabrous or coarsely hirsute proximally. Leaves all basal; blades oblanceolate, lyrate to slightly runcinate, 50-–350 × 5–30 mm, margins coarsely dentate to pinnatifid, faces ± hirsute (hairs coarse, spreading). Heads usually 2–7 in loose arrays, sometimes borne singly. Involucres cylindric or campanulate, 10–25 × 10–20 mm. Phyllaries 20–30, narrowly lanceolate, 3–20 mm, unequal, margins scarious, green to darkened, faces glabrous or sparsely hirsute medially. Florets 10–15 mm, surpassing phyllaries at flowering; corollas bright yellow or grayish green. Cypselae monomorphic, all beaked, beaks 3–5 mm; bodies golden brown, fusiform, 6–10 mm, ribs 10–12, muricate; pappi of whitish bristles in 2 series, outer barbellate, shorter than plumose inner, longest 10–12 mm. 2n = 8.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=220006707 |
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 13
Specimens with Barcodes: 19
Species With Barcodes: 1
Canada
Rounded National Status Rank: NNA - Not Applicable
United States
Rounded National Status Rank: NNA - Not Applicable
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Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Hypochaeris+radicata |
Rounded Global Status Rank: GNR - Not Yet Ranked
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Hypochaeris+radicata |
Hypochaeris radicata is recognized by the coarse, perennial habit, stout roots, coarsely hirsute leaves and phyllaries, yellow corollas, and monomorphic, beaked cypselae. It is weedy and invasive in some areas.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=220006707 |
Perennial herb with flowering stems growing from a basal rosette of oblanceolate to narrowly elliptic leaves, margins deeply pinnately lobed, more or less densely hairy above. Flower heads solitary with 3 to 4 whorls of involucral bracts, bright yellow.
This adventive perennial plant consists of a rosette of basal leaves spanning up to 1' across, from which one or more flowering stalks develop. The basal leaves are up to 6" long and 2" across. They are oblanceolate, pinnatifid, ciliate, and sometimes coarsely dentate along their margins. Both the upper and lower surfaces of these leaves are covered with coarse white hairs. There is a conspicuous central vein that runs along the length of the lower surface of each leaf. The flowering stalks are up to 2' tall. They are hairless and usually sparingly branched; each of these branches terminates in a single yellow flowerhead spanning about 1–1½" across. There are a few alternate leaves along the flowering stalks; these leaves have been reduced to scales and are quite small. The foliage has a milky latex. Each flowerhead consists of about 20-30 yellow ray florets and no disk florets. The ray florets spread outward from the center of the flowerhead; each of these florets is truncate with 5 small teeth along its outer edge. Toward the center of the flower are slender yellow styles that are bifurcated and recurved at their tips. The base of each flowerhead has several series of green bracts (phyllaries) that are oblong-linear and appressed together to form a short cylinder. Toward the tip of each bract, there is often a central mid-rib with coarse white hairs. The blooming period occurs from mid-summer to early fall and lasts about 2 months. Each floret is replaced by an achene with a thread-like beak that terminates in a tuft of white hairs. This beak is as long as, or longer, than the achene. The dark achene is somewhat flattened, ribbed, and narrowly spindle-shaped, tapering at both ends. The achenes are distributed by the wind. The root system produces a fleshy caudex with fibrous roots. This plant reproduces primarily by reseeding itself, although offsets may form a short distance from the mother plant. Cultivation
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | Copyright © 2002-2014 by Dr. John Hilty |
Source | http://www.illinoiswildflowers.info/weeds/plants/rgh_catear.htm |
Native of Europe; naturalised in many parts of the world
Rough Cat's Ear is an uncommon plant that occurs primarily in NE Illinois, as well as Champaign and St. Clair counties (see Distribution Map). It is originally from Eurasia. Habitats include lawns and areas near dwellings, vacant lots, grassy areas along railroads and roadsides, and waste areas. This species usually occurs in disturbed urban areas; thus far, it has not been invasive of natural areas. Faunal Associations
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | Copyright © 2002-2014 by Dr. John Hilty |
Source | http://www.illinoiswildflowers.info/weeds/plants/rgh_catear.htm |