For the last two weeks, ever since the level of the river has fallen right down, and the moment the long grass-like underwater plants were exposed and started sprouting a million little white flowers, I have been trying to find out what this amazing plant was called. I have had every kind of intelligent answer -- the most popular being "water flowers" and "flowering algae", but it was a marvellous chance encounter with Maureen, a botanist travelling through (a story for another time!) that revealed the answer. "Look up crows foot under the renunculus family", she said, and Voila! the answer to the riddle of the "water flowers" on the Dordogne!
Flore laurentienne
Frère Marie-Victorin (1885-1944)
Ranunculus :
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Famille 33. ― RANUNCULACEAE [ RENONCULACÉES ].
4. Ranunculus Linné. — Renoncule.
1. Ranunculus longirostris Godron. — Renoncule à long bec. — (Long-beaked water-crowfoot).
— Plante strictement aquatique ; feuilles divisées en segments filiformes (longueur généralement moins de 25 cm), assez rigides pour se soutenir hors de l'eau, étalées presque à angle droit avec la tige, sessiles ou presque ; fleurs blanches ; fruit muni d'un bec défini d'environ 1 mm. Floraison estivale. Rivières et lacs. Ouest du Québec.
Ranunculus longirostris, fruit.
Flore laurentienne, figure 55, dessin frère Alexandre Blouin.
Cette plante, ainsi que le R. trichophyllus, appartient à un groupe de renoncules très polymorphe et très mal compris, qui est parfois séparé du genre Ranunculus (genre Batrachium).
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