re: Pistia


Kew Gardens, the major British botanical collection, has a relatively new
glasshouse (named after the Princess of Wales) which has a huge tropical
lake surrounded by plants of all sorts, as well as shoals of splendid
fishes. Well worth a look for any aquarists visiting London!

Anyhow, the pool has natural lighting, and the Pistia is almost a plague.
It grows on the water and also over onto damp soil. The plants get very
large, perhaps as much as 20 cm in diameter, with many runners and daughter

I have found that Pistia doesn't do well in aquaria for two reasons:
dripping condensation from the hood causes the leaves to decay; and the
leaves burn if they touch the lights.

Generally the plants look much smaller, and are flatter (less cabbage
like). I suppose they would do better in an open aquarium lit by suspended
halide lamps or something that wouldn't interfere with growth.




From  Neale Monks' Macintosh PowerBook, at...

Department of Palaeontology, Natural History Museum, London, SW7 5BD
Internet: N.Monks at nhm_ac.uk, Telephone: 0171-938-9007