Leontodon


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Leontodon

 

a genus of perennial and annual herbaceous plants of the family Compositae. The leaves form a rosette and may be entire or pinnatifid. The heads have yellow or orange ligulate flowers. The involucres of the heads are imbricate, with one to three series of bracts. The achenes have pappas of plumose bristles. There are more than 50 species in the northern hemisphere, primarily in temperate regions. Fourteen species are found in the USSR. Rough hawkbit (Leontodon hispidus ) grows on slopes, in thickets; and in meadows. Fall dandelion, or autumnal hawkbit (L. autumnalis), is found in meadows and fields and on fallow land. Plants of this genus are nectar-bearing.

References in periodicals archive ?
Stuppner (2006) "Comparative molecular and phytochemical investigation of Leontodon autumnalis (Asteraceae, Lactuceae) populations from Central Europe".
Stuppner (1999) "Anti-inflammatory activities of hypocretenolides from Leontodon hispidus".
boissieri 1, Asperula tenella 1, Bunium ferulaceum 1, Carex caryophyllea 1, Centaurea orientalis 1, Cephalaria coriacea 1, Cleistogenes serotina 1, Cota tinctoria 1, Di chanthium ischaemum 1, Erysimum cuspidatum 1, Eryngium campestre 1, Euphorbia petrophila 1, Fumana procumbens 1, Galium glaucum 1, Geranium sanguineum 1, Jurinea roegneri 1, Koeleria macrantha 1, Leontodon biscutellifolius 1, Linum hirsutum L.
Galium pyrenaicum (Ib) Plantago nivalis (Ne) MAC Crepis oporinoides (Be) Cystopteris fragilis (Others) Linaria glacialis (Ne) Herniaria boissieri (Be) Senecio nevadensis (Ne) Leontodon boryi (Be) Linaria aeruginea subsp.
30 Other species: Dactylorhiza maculata 2 in 5 and + in 8; Agrostis stolonifera and Juncus subnodulosus 1 in 2; Juncus acutiflorus and Phragmites australis 1 and Phleum bertolonii + in 3; Scirpoides holoschoenus 1 in 4; Taraxacum vulgare + in 5; Galium verum and Polygala vulgaris 1, Dactylorhiza elata, Juncus conglomeratus, Leontodon carpetanus and Tetragonolobus maritimus + in 6; Danthonia decumbens + in 8; Trifolium repens and Cardamine castellana 1 in 9; Leontodon hispidus 1 in 10.
vulgaris + in 8 and 13; Dryopteris filix-mas + in 8, r in 18; Imperatoria ostruthium r in 9 and 20, Inula conyzae r in 8 and in 29; Juncus articulatus + in 11 and 12; Linum catharticum + in 11 and 12; Agrostis stolonifera + in 8, 12 and 13; Epilobium dodonei + in 8, r in 13; Epilobium anagallidifolium r in 11, + in 12; Leontodon hispidus r in 12 and 17; Brachypodium genuense + in 13 and 17; Dactylorhiza maculata subsp.
welwitschianus 3, Cistus ladanifer 2, Lavandula luisieri 2, Cistus salviifolius 2, Cistus crispus 1, Orchis morio +; Companions: Genista triacanthos 3, Asphodelus fistulosus 2, Elaoselinum foetidum 2, Briza maxima 2, Calluna vulgaris 2, Daphne gnidium 2, Pulicaria odora 1, Leontodon taraxacoides subsp.
2-4), y otra con Leontodon longirostris en contacto con los pastos anuales secos de Tuberarietea (invs.
Pastizales terofiticos graminoides dominados por Aira uniaristata en los que, ademas, Leontodon longirostris muestra una alta frecuencia.
obscurum, Koeleria macrantha, Leontodon hispidus, Polygala vulgaris, Sanguisorba minor, Sesleria albicans.