Comparaison

Photos

Digitaria ischaemum

Critères

Critère	Digitaire glabre Digitaria ischaemum
Période floraison ou sporulation	J F M A M J J A S O N D
Rareté	Non renseignée
Hauteur mini-maxi	10 - 50 cm
Couleur dominante des pièces pétaloides	Pas de calice ni de corolle
Habitat	Terrain sec Champ cultivé, vigne
Nombre de pétales ou de tépales	Aucun pétale
Nombre d'étamines	3
Port de la plante	Tige dressée Rampante
Position de l'ovaire	Supère
Inflorescence primaire	Epillet
Pilosité des feuilles inférieures	À pilosité homogène sur les faces Glabres
Position de l'arête des lemmes	Absente
Largeur moyenne des feuilles inférieures	2 - 4 mm
Présence d'oreillettes	Pas d'oreillettes
Structure de l'inflorescence générale	Grappes spiciformes fasciculées (antenne télé)
Taille de l'épillet	< 3 mm
Taille de la glume supérieure	Égalant environ l'ensemble des fleurons
Type de ligule	Membraneuse glabre ou courtement ciliée
Disposition des épillets sur l'axe de l'infloresce	Axe portant unilatéralement des couples d'épillets
Nombre de rayons formant l'inflorescence	Souvent 2 ou 3 rayons uniquement
Taille relative des 2 pièces encadrant le fleuron	Presque égales
Type de plante	Plante herbacée à fleurs À feuilles linéaires et longues gaines
Type biologique	Plante terrestre Plante annuelle
Disposition des feuilles	Tige aérienne avec feuilles Alternes
Structure de la feuille	Feuille non découpée Simple, non découpée
Forme des feuilles indivises	Rapport longueur / largeur > 10 Linéaire
Bord des limbes	Echancrures < 20% du limbe Entier à marge lisse ou scabre
Type de fleur	Autre Autre (Voir aide)
Dimension de la fleur en mm	Plante à fleurs nues Pièces florales absentes ou transformées en soies
Type d'inflorescence	Fleurs regroupées Epi ou épi composé
Type de fruit	Sec indéhiscent Caryopse
Forme de la tige ou de la hampe florale	Tige cylindrique Lisse ou finement striée
Structure de l'épillet	Un seul fleuron fertile Associé à un fleuron stérile basal
Structure de la semence	1 épillet complet Sans pédoncule ni baguette, 1 seul caryopse

Carte des observations

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