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Brassica nigra

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Brassica nigra
Individu
Critères
Critère Brassica nigra
Période floraison ou sporulation
  • J
  • F
  • M
  • A
  • M
  • J
  • J
  • A
  • S
  • O
  • N
  • D
Rareté Rare (R)
Hauteur mini-maxi 60 - 140 cm
Nombre de pétales ou de tépales
4
Habitat
Terrain vague, chemin
Nombre d'étamines
6
Longueur du fruit
Entre 1 et 1,5 cm
Entre 1,5 et 3 cm
Insertion des feuilles sur la tige
Feuilles non embrassantes
Pilosité des feuilles
Présence de poils tous simples
Couleur de la feuille
Feuilles glauques (bleu grisâtre), lisses
Orientation des fruits
Fruits appliqués contre la tige
Orientation des sépales
Sépales étalés, dressés
Nervation des valves
Une seule nervure médiane
Type de plante
Plante herbacée à fleurs
  • Autre plante herbacée à fleur
Type biologique
Plante terrestre
  • Plante annuelle
Disposition des feuilles
Tige aérienne avec feuilles
  • Alternes
Forme des feuilles indivises
Rapport longueur / largeur 2-5
  • Lancéolée
Feuilles découpées ou composées
  • Feuilles découpées ou composées
Bord des limbes
Echancrures >20% du limbe
  • Lobé ou découpé
Type d'inflorescence
Fleurs regroupées
  • Grappe ou grappe composée
Forme de la tige ou de la hampe florale
Tige cylindrique
  • Lisse ou finement striée
Type de fruit
Silique
  • Fruit déhiscent prolongé par un bec > 3 mm
Dimension de la fleur en mm
1 à 2 cm
  • 14
Couleur dominante des pièces pétaloides
Jaune
Port de la plante
Tige dressée
Position de l'ovaire
Supère
Structure de la feuille
Feuille non découpée
  • Simple, non découpée
Feuille plus ou moins découpée
  • Pennée et plus profondément découpée
Type de fleur
Symétrie radiale
  • Pétales ou tépales libres
Type de fruit
Sec déhiscent
  • À 2 valves avec une cloison centrale (silique)
Phénologie
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Carte des observations
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