Comparaison

Sélection

Alyssum alyssoides

Alysson à calice persistant

Photos

Photos épinglées

Alyssum alyssoides
Individu
4
Critères
Critère Alyssum alyssoides
Période floraison ou sporulation
  • J
  • F
  • M
  • A
  • M
  • J
  • J
  • A
  • S
  • O
  • N
  • D
Rareté Très rare (RR)
Hauteur mini-maxi 5 - 20 cm
Nombre de pétales ou de tépales
4
Habitat
Prairie, pelouse
Terrain sec
Nombre d'étamines
6
Longueur du fruit
< 5 mm
Insertion des feuilles sur la tige
Feuilles non embrassantes
Pilosité des feuilles
Présence de poils étoilés ou ramifiés
Pilosité des fruits
Silicule arrondie, couverte de poils étoilés
Taille du style
Style inférieur à 1 mm
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 1-2
  • Ovale, oblongue ou obovale
Rapport longueur / largeur 2-5
  • Lancéolée
  • Spatulée
Bord des limbes
Echancrures < 20% du limbe
  • Entier à marge lisse ou scabre
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
Silicule
  • Aplati parallèlement à la cloison
Couleur dominante des pièces pétaloides
Blanche
Jaunâtre
Port de la plante
Tige dressée
Position de l'ovaire
Supère
Structure de la feuille
Feuille non découpée
  • Simple, non découpée
Type de fleur
Symétrie radiale
  • Pétales ou tépales libres
Dimension de la fleur en mm
Moins de 5 mm
  • 4
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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