Overview

Comprehensive Description

Description

Subscapose perennial herbs (in ours). Leaves radical and rosulate or cauline and alternate. Capitula solitary or arranged in a corymb. Involucre obconic, becoming cylindric-campanulate. Phyllaries 2-several-seriate. Receptacle without scales, pitted. Florets yellow. Achenes ± terete and equal-ribbed, rough with ascending projections on the ribs, distinctly beaked (in ours). Pappus 1-many-seriate of barbellate, persistent setae.
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© Mark Hyde, Bart Wursten and Petra Ballings

Source: Flora of Zimbabwe

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Distribution

Localities documented in Tropicos sources

Crepis L.:
Australia (Oceania)
China (Asia)
Honduras (Mesoamerica)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

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Ecology

Associations

Plant / resting place / on
Haplothrips setiger may be found on live flower of Crepis

Foodplant / feeds on
larva of Olibrus pygmaeus feeds on Crepis

Foodplant / miner
larva of Ophiomyia beckeri mines leaf (midrib, lamina) of Crepis

Plant / resting place / within
puparium of Ophiomyia cunctata may be found in leaf (base of midrib) of Crepis

Foodplant / miner
larva of Ophiomyia heringi mines stem of Crepis

Plant / resting place / within
puparium of Ophiomyia pulicaria may be found in leaf (petiole at base) of Crepis

Foodplant / parasite
underground tuber of Orobanche artemisiae-campestris parasitises root of Crepis
Other: major host/prey

Foodplant / spot causer
numerous, mostly epiphyllous pycnidium of Septoria coelomycetous anamorph of Septoria crepidis causes spots on fading leaf of Crepis
Remarks: Other: uncertain

In Great Britain and/or Ireland:
Foodplant / internal feeder
larva of Tephritis vespertina feeds within capitulum of Crepis

Foodplant / miner
larva of Trypeta immaculata mines leaf of Crepis

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:123Public Records:90
Specimens with Sequences:117Public Species:56
Specimens with Barcodes:116Public BINs:0
Species:61         
Species With Barcodes:61         
          
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Crepis

Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Barcode data

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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Crepis

Crepis, commonly known in some parts of the world as hawksbeard or hawk's-beard (but not to be confused with the related genus Hieracium similarly appellated), is a genus of annual and perennial flowering plants of the family Asteraceae superficially resembling the dandelion, the most conspicuous difference being that Crepis usually has branching scapes with multiple heads (though solitary heads can occur). The genus name Crepis derives from the Greek krepis, meaning "slipper" or "sandal", possibly in reference to the shape of the fruit.[1]

The genus is distributed throughout the Northern Hemisphere and Africa,[2] and several plants are known as introduced species practically worldwide.[1] The center of diversity is in the Mediterranean.[2]

Ecology[edit]

Crepis species are used as food plants by the larvae of some Lepidoptera species including the broad-barred white moth. The fly Tephritis formosa is known to attack the capitula of this plant.[3]

Seeds of Crepis species are an important food source for some bird species.[4]

Uses[edit]

In Crete, Greece the leaves of Crepis commutata which is called glykosyrida (γλυκοσυρίδα) is eaten raw, boiled, steamed or browned in salads. Another two species on the same island, Crepis vesicaria, called kokkinogoula (κοκκινογούλα), lekanida (λεκανίδα) or prikousa (πρικούσα) and a local variety called maryies (μαργιές) or pikrouses (πικρούσες) have both its leaves and tender shoots eaten boiled by the locals.

Secondary metabolites[edit]

The genus Crepis is a rich source of costus lactone-type guaianolides,[5] a class of sesquiterpene lactones.

Phenolics found in Crepis include luteolin-type flavonoids and caffeoyl quinic acid derivatives such as chlorogenic acid and 3,5-dicaffeoylquinic acid. Moreover, Crepis species contain the caffeoyl tartaric acid derivatives caffeoyl tartaric acid and cichoric acid.[6]

Diversity[edit]

There are about 200 species in the genus.[1][2]

Species include:

References[edit]

  1. ^ a b c Crepis. Flora of North America.
  2. ^ a b c Enke, N. and B. Gemeinholzer. (2008). Babcock revisited: New insights into generic delimitation and character evolution in Crepis L.(Compositae: Cichorieae) from ITS and matK sequence data. Taxon 57(3) 756-68.
  3. ^ White, I.M. (1984). Tephritid Flies (Diptera: Tephritidea). Handbooks for the Identification of British Insects. 10 pt 5a. Royal Entomological Society of London. pp. 134 pp. ISBN 0901546682. 
  4. ^ D. L. Buckingham and W. J. Peach (2005). "The influence of livestock management on habitat quality for farmland birds". Animal Science 81: 199–203. 
  5. ^ Zidorn, C. (2008). "Sesquiterpene lactones and their precursors as chemosystematic markers in the tribe Cichorieae of the Asteraceae". Phytochemistry (Amsterdam, The Netherlands) 69: 2270–2296. doi:10.1016/j.phytochem.2008.06.013. ISSN 0031-9422. 
  6. ^ Zidorn, C., et al. (2008). "Phenolics as chemosystematic markers in and for the genus Crepis (Asteraceae, Cichorieae)". Scientia Pharmaceutica (Vienna, Austria) 76: 743–50. doi:10.3797/scipharm.0810-25. ISSN 0036-8709. 
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