5.2. Submerged Weeds


5.2. Submerged Weeds

Hydrilla
  • Stem slender, grows up to 0.5 m in length
  • Can infest water even 12m in depth
  • Common in India
  • Leaves are linear
  • Flowers during October to January
  • Grows fast
  • Reproduces by vegetative propagation
  • One of the important ornamental plant
  • Causes problems in fish ponds
  • Grass carp feeds on this weed
h

Vallisnaria sp.
  • Rooted to pond bottom.
  • Leaves are linear and ribbon like and have sheath at the base.
  • Grows up to 30 – 35 cm in length and 5-7 cm in width
  • Dark green in colour
  • Flowers during Oct. to March
  • Ornamental
v

Ceratopyllum
  • Perennial submerged rootless plant
  • Sometime anchored to bottom by shoot
  • Leaves finely divided and located in whorls at the nodes
  • Grows up to 20cm in length
  • Flowers from Jan to March
c

Cabomba sp.
  • Submerged rooted plant with leaves placed opposite to each other.
  • Structures looking like fans
  • Stem slender with gelatinous line
  • Good ornamental plant
c

Chara sp.
  • Plant with whorls of short branches
  • Attached to soil by rhizoids
  • Flowers soft, encrusted with calcium deposits in hard waters
  • Musk like smell when crushed
c

Nitella sp.
  • Stem cylindrical
  • Leaves arranged as Whorls at regular intervals
n

Myriophyllum
  • Long and slender stem
  • Pinnate leaves in whorls of 4-6
  • Highly segmented
  • Masses of stems detach and float
m
Last modified: Tuesday, 26 June 2012, 5:03 AM