Frogbit


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Frogbit

 

(Hydrocharis), a genus of water plant of the Hydrocharitaceae family. Small, delicate, freely floating dioecious plants with unisexual white flowers. The leaves are gathered together in a rosette and have rather long leafstalks; on these leafstalks are rounded, broad heart-shaped disks that float on the surface of the water. It reproduces mainly by horizontal vegetative shoots. It spends the winter in the form of individual buds that drift to the bottom in the autumn and float to the surface in the spring. Two species of frogbit are known: common frogbit (H. Morsus-ranae), which is wide-spread in stagnant and slowly flowing waters in Europe and Asia and which also breeds in aquariums, and dubious or Asiatic frogbit (H. dubia, formerly//. Asiatica), which grows in the east and south of Asia.

References in periodicals archive ?
Known as American frogbit, this is a floating stoloniferous aquatic that, unlike its European counterpart, Hydrocharis norsus-ranae, does not form overwintering turions and therefore cannot survive in lakes that freeze during winter.
One of Britain's rarest bumblebees, the shrill carder, birds like the lapwing, and plants including frogbit, arrowhead and wolffia - better known as duckweed - could be impacted if work goes ahead.
Choose from the likes of water violets, monkey tail, crowfoot and frogbit.
Frogbit, monkey tail, water violets and crowfoot are among them.