1Approved for publication by the Director, Central Inland Fisheries Research Institute, Barrackpore.
The study deals with general account of the habit, morphology, reproduction and growth of Utricularia stellaris L. f. in relation to the prevailing physico-chemical condi-tions of water.
V. stellaris is a submerged rootless weed very often found choking the water body in association with other plants. The density of infestation varied from 0.6 to 2.2 kg/sqm. Flowering started from August and continued till February. The plant reproduced both by vegetative and sexual means.
The ponds where V. stellaris thrived had soil pH 6.6 to 7.6, water pH 6.2 to 8.5, dissolved oxygen 3.2 to 10.2 ppm, nitrate nitrogen 0.05 to 1.09 ppm and phosphorus from trace to 1.0 ppm.
Post-monsoon months are the period of active vegetative growth of U. stellaris.
