Anabaena azollae

(from the article `Salviniales`) ...Salvinia having a whorl of three leaves, two of which are round and emergent while the third is submerged and finely divided to function as a ... ...and Pteridium) have been shown to be strongly carcinogenic. The minute, aquatic mosquito fern (Azolla) has become a valuable plant, especially in ... ...
Found on
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