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Deprecated: Calling get_class() without arguments is deprecated in /home/mqcvcllv/blogs/wordpress/wp-includes/class-wp-http.php on line 329 Pâquerettes et pissenlits - Des plantes et des pavés Warning: Trying to access array offset on false in /home/mqcvcllv/blogs/wordpress/wp-content/themes/elegant-pink/inc/extras.php on line 468
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Photos : 18/04/2020, place de la Barre, rue du Béguinage, abords du parc de la Rhônelle
Aujourd’hui c’est le tour de la pâquerette (Bellis perennis) et du pissenlit, (Taraxacum officinale). Ils font partie de la même famille, les Asteraceae.
Et voici le secret de cette famille : ce qu’on observe et qu’on prend pour une fleur, (et qui s’appelle un capitule) ce sont en réalité des centaines de fleurs !
Dans la pâquerette, par exemple,
ce qu’on prend pour des pétales blancs sont chacun, en réalité, une fleur à part entière. Elles ont une forme déroutante, elles sont toute plates, en forme de langue. Elles sont donc… ligulées
ce qu’on prend pour le coeur de la fleur, ce sont en réalité d’autres fleurs, en forme de tube. Elles sont donc… tubulées.
On peut donc dire
que le pissenlit n’a que des fleurs ligulées
que d’autres, comme le chardon, ou l’artichaut, par exemple, n’ont que des fleurs tubulées
et que la pâquerette a les deux : elle est donc… radiée !
De beaux gaillards !
Pas de tige, mais un pédoncule…
Un capitule liguliflore…
Les fruits du pissenlit : les akènes
Transparence et légèreté…
Une précision : le capitule du pissenlit n’est pas placé sur une tige, puisqu’il n’y a pas de feuille, on parle plutôt de pédoncule.
Enfin, regardez bien… les fruits du pissenlit, les akènes, sont surmontés d’une aigrette de soie, le pappus. C’est ainsi, grâce au vent, qu’il va coloniser le monde… 🙂
Si vous souhaitez rejoindre le groupe «des Plantes et des Pavés» pour échanger nos connaissances, nos découvertes, nos photos…
À la semaine prochaine !
Attention, certaines plantes présentent différentes formes de toxicité, d’autres ressemblent fortement à des plantes que nous connaissons… mais sont des exceptions ! Soyez toujours prudents, et ne consommez jamais une plante sans être absolument certain(e)s de son identification.
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