Kopi-pana or Kariba weed, Salvinia molesta

Kopi-pana or Kariba weed (Salvinia molesta, family: Salviniaceae) is a completely free-floating fern with whriled leaves, attaining a length of 30 cm. Its submerged brown-colored leaves look a lot like roots. It usually prefers to live in large colonies in stagnant water. Its original home is Brazil. The species is now well adapted to the tropics of the world. The perennial aquatic herb has been considered as an invasive plant in many countries. 

Other names:  Aquarium watermoss, Water velvet, Giant azolla, Giant salvinia, African pyle, Australian azolla.

Its stem is located horizontally under the water and three whorled fronds (leaves) emerge from each node of that. Fronds are light green or yellowish green, oblong-obovate, 2.5-5 cm long, opposite. The sumerged one is about 25 cm long, looking like roots.

The plant is a fern, so it does not produce flowers or fruits. So it has to take another process to propagate. Egg-shaped sporocarps, developed in elongated chains among the submerged leaves produces numerous microscopic sporangia. They can quickly double their numbers in just 2 to 10 days by this process. Due to this, they spread the surface of the waterbodies very quickly and this causes damage to other aquatic plants and animals.

The aquatic plant quite is beautiful. it can be planted as ornamental plant in your aquariums. 

Synonyms: Salvinia auriculata, Salvinia adnata.  


  1. You have provided valuable data for us. It is great and informative for everyone. Keep posting always. I am very thankful to you. Weed Seeds Canada

  2. I liked your work and the way in which you have shared this article here about weed. It is a beneficial and helpful article for us. Thanks for sharing an article like this.
    Buy Weed online in Fraser Valley

  3. You have a genuine capacity to compose a substance that is useful for us. You have shared an amazing post about weed.Much obliged to you for your endeavors in sharing such information with us.
    same day weed delivery new westminster

  4. Great job for publishing such a beneficial web site. Your web log isn’t only useful but it is additionally really creative too. Delivering cannabis in DC

  5. Hello I am so delighted I located your blog, I really located you by mistake, while I was watching on google for something else, Anyways I am here now and could just like to say thank for a tremendous post and a all round entertaining website. Please do keep up the great work. recent marijuana news


Post a Comment

Week Star

Jongli badam or Bastard poon tree, Sterculia foetida

Makal or Mahakal, Trichosanthes tricuspidata

Guloncho, Heart-leaved moonseed, Tinospora cordifolia