lavateraguy's picture

Still finding new taxa

Observed: 13th March 2013 By: lavateraguylavateraguy’s reputation in Plantslavateraguy’s reputation in Plantslavateraguy’s reputation in Plantslavateraguy’s reputation in Plantslavateraguy’s reputation in Plants
Azolla01
Description:
Identifications
Species interactions

No interactions present.

Species with which Water Fern (Azolla filiculoides) interacts

Comments

markwilson's picture

azolla distribution

Does anyone know if Azolla does not like lime (calcifuge) the NBN map looks like it avoids alkaline geology.

More info at
http://www.nhm.ac.uk/nature-online/species-of-the-day/biodiversity/econo...

John Bratton's picture

It is certainly Azolla but a

It is certainly Azolla but a while ago someone on i-Spot pointed out that A. caroliniana is the one commonly sold in shops so is probably often thrown out into ponds. It isn't in Stace, and to separate the two, you have to find spores, which I've failed to do.

martinjohnbishop's picture

Azolla

I believe it should be called Azolla cristata Kaulf.
http://ww2.bgbm.org/EuroPlusMed/PTaxonDetail.asp?NameId=7501604&PTRefFk=...

Becoming brownish-red in autumn rather than bright crimson-red as in A. filiculoides.

Martin

lavateraguy's picture

According to several sources (e.g. The Plant List) ...

... Azolla filiculoides and Azolla caroliniana are conspecific.

GrizzledBadger's picture

Azolla by whatever name has,

Azolla by whatever name has, within 2yrs, taken over a pond where I work. Our sub-soil is Chalky Boulder-clay with lumps of chalk being found in it and the top soil alkaline to neutral. We also have 'Breedon Gravel' type surfacing on the paths, of which some, especially the 'fines' are washed into the pond. So the probability is that the water is also alkaline. Anyone with any spare Azolla Weevils?

Brock