Weed Science & Agronomy
INRA-Dijon
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Unité de Malherbologie & Agronomie Weed Science & Agronomy INRA-Dijon |
Bayer Code : lacpe
Synonym(s) of Sc. name:
Classification: Compositae, Dicotyledonous
Common name: perennial lettuce
Synonym(s) of Common name:
Name per country: DE : Blauer Lattich ; ES : lechuga azul ; FR : laitue perenne ; IT : lattuga rupestre ; PT : ; EN : perennial lettuce ;
Biological type: Perennial
- Cotyledons elliptic to ovate, rounded tip, more or less stalked.
- Leaves entire, lanceolate, more or less toothed.
- Height: 30-90 cm. Plant glabrous.
- Stem erect, branched, smooth.
- Leaves divided, pinnate except in their upper part, lobes ovate, lengthened or narrow. Leaves glabrous or somewhat glaucous, clasping the stem with 2 lobes rounded and sometimes acute. White latex.
- Flowers purplish-blue or blue or reddish rarely white, rays (1-3 cm broad), heads in terminal spreading corymb. Small scales at the base of the head.
- Fruit : achene black when ripe, with fine ribs on each face, abruptly tapered into a beak bearing a white pappus of simple, toothed not feathery hairs.
- Plant ornamental. Young seedlings eaten as green salad.
- Rare in crops.
- Biological type: Perennial.
Ecological profile (click on flags):
Present
Rare
