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Carduus crispus

(Curled Plumless-Thistle)

Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in English:

Curled Plumless-Thistle, Curled Thistle, Curly Plumeless Thistle, Curly Plumeless-Thistle, Welted Thistle, Welted Thistle Carduus Crispus

Common Names in French:

Chardon Crépu

Common Names in German:

Brachdistel, Brachfelddistel, Brochedaszel, Brochfialtdaszel, Daszel, Distel, Felddistel, Fialtdaszel, Kickel, Kicklich Dästel, Kicklige, Krause Distel, Stachdaszel, Stechan Daszel, Stechende Distel

Common Names in Portuguese:

Cardo

Description

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Family Compositae

The largest family of flowering plants , the Compositae (Asteraceae), comprising about 1,100 genera and more than 20,000 species and characterized by many small flowers arranged in a head looking like a single flower and subtended by an involucre of bracts. A head may consist of both ray flowers and disk flowers, as in the sunflower, of disk flowers only, as in the burdock, or of ray flowers only, as in the dandelion.

Genus Carduus

Annuals or biennials [perennials ], 30-200(-400) cm. spiny , ± tomentose , sometimes glabrate . Stems erect , simple to much branched, (spiny-winged) . Leaves basal and cauline; petiolate or sessile; blade margins spiny dentate, often 1-2-pinnately lobed , faces glabrous or hairy , eglandular . Heads discoid , borne singly or 2-20 in dense clusters or corymbiform arrays. (Peduncles naked or leafy-bracteate, spiny-winged or not winged .) Involucres cylindric to spheric. Phyllaries many in 7-10+ series, linear to broadly ovate , bases appressed , margins entire, apices ascending to spreading or reflexed , acute, spine-tipped. Receptacles flat, epaleate, bearing setiform scales ("flattened bristles"). Florets several-many; corollas white to pink or purple, ± bilateral , tubes long, slender, throats short, campanulate , abruptly expanded from tubes, lobes linear; anther bases sharply short-tailed, apical appendages oblong ; style branches: fused portions with slightly, minutely puberulent , swollen basal nodes, distally papillate or glabrous, distinct portions very short. Cypselae ovoid , slightly compressed , faces smooth . glabrous, attachment scars slightly lateral ; pappi persistent or falling in rings . of many minutely barbed , basally connate bristles or setiform, minutely barbed scales ("minutely flattened bristles"). x = 8, 9, 10, 11, 13.

Species ca. 90: introduced ; Eurasia , Africa.[1]

Physical Description

Species Carduus crispus

Annuals or biennials, 30-150 cm. Stems openly branching, villous with curled, septate hairs to nearly glabrous , spiny wings to 1.5 cm wide, wing spines to 3 mm. Leaves: basal tapering to winged petioles , blades 10-20 cm, margins spiny-toothed to ± shallowly pinnately lobed ; cauline sessile, gradually smaller, margins often more deeply divided , marginal spines to 3 mm; abaxial leaf faces ± tomentose with long, one-celled hairs and/or long, curled, septate hairs along veins or glabrate ; adaxial faces sparsely hairy or glabrate. Heads borne singly or in groups of 2-5, 15-18 mm. Peduncles spiny-winged to near apex or throughout, to 4 cm. Involucres ± spheric, 12-17 × 12-17 mm. Phyllaries narrowly lanceolate, outer and middle with appressed bases ca. 1 mm wide and appressed to spreading appendages 0.5-1 mm wide, spine tips 1-1.5 mm, inner with unarmed , straight tips . Corollas purple or ± white, 11-16 mm, lobes ca. 3.5 times length of throat . Cypselae light brown to gray-brown, 2.5-3.8 mm; pappus bristles 11-13 mm. 2n = 16 (Sweden). [source]

Carduus crispus closely resembles the much more common C. acanthoides. Some published records of C. crispus are probably C. acanthoides. Although the degree of spininess and tough versus brittle stems were used as key characters (A. Cronquist 1980; H. A. Gleason and A. Cronquist 1991) to differentiate the two taxa, both characters are subjective, and the second is impractical with dry material . [source]

Habit: Forb/herb

Flowers: Bloom Period: May, June, July, August, September, October. • Flower Color: red-purple

Habitat

Weed of waste ground , pastures, roadsides, fields ; 0-500 m (Ref. 52641).

Typically found at an altitude of 0 to 1,422 meters (0 to 4,665 feet).[2]

Biology

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Reproduction

Duration: Biennial

Growth

Soil: Minimum pH: 5.6 • Maximum pH: 7.8

Sunlight: Sun Exposure: Full Sun .

Moisture: Drought Tolerance: High

Temperature: Cold Hardiness: 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b, 11. (map)

Taxonomy

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Notes

Name Status: Accepted Name .

Comment: Data Providers: New Zealand Plant Name Database, Flora of Japan, Flora of Korea, Govaerts World Compositae Checklist A-G, IPNI, Flora of China Checklist, Tropicos, Euro+Med. GCC LSID: urn :lsid:compositae.org:names:0835F93D-149A-4964-A4BB-123AC27F1C6C

Last scrutiny: 19-Aug-09

Similar Species

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Members of the genus Carduus

ZipcodeZoo has pages for 11 species, subspecies, varieties, forms, and cultivars in this genus:

C. acanthoides (Plumeless Thistle) · C. crispus (Curled Plumless-Thistle) · C. nutans (Chardon Penche) · C. nutans macrocephalus (Musk Thistle) · C. nutans macrolepis (Chardon Penche) · C. nutans var. litoralis (Nodding Thistle) · C. orthocephalus (Plumeless Thistle) · C. pycnocephalus (Compact-Headed Thistle) · C. scariosus (Meadow Thistle) · C. tenuiflorus (Italian Thistle) · C. x orthocephalus (Plumeless Thistle)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 14, 2007:

Identifiers

Footnotes

  1. David J. Keil "Carduus". in Flora of North America Vol. 19, 20 and 21 Page 57, 66, 83, 91, 96, 97, 122. Oxford University Press. Online at EFloras.org. [back]
  2. Mean = 160.790 meters (527.526 feet), Standard Deviation = 213.030 based on 9,893 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/15/2012