© Bomberdo (Jens) (2008)

Samolus valerandi

Water pimpernel

°C
°dKH
Aquarium suitability: yes
Usage: Midground, Nano tanks, Foreground, group
Difficulty: medium
Growth: slow
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Height: 10 - 15 cm
Width: 10 - 20 cm

Availability [?]: 
  • frequently available commercially

Common names: 
  • Water pimpernel
  • Thin leaf brookweed
  • Water rose

Synonyms: 
  • Samolus floribundus Kunth
  • Samolus parviflorus Raf.

Habit, plant type:

  • stem
  • rosette
Botanical name [?]: Sámolus valerándi L.

Major group (unranked): Seed plants: Flowering plants (Angiosperms)
Order: Ericales
Family: Primulaceae
Genus: Samolus

Description: 

Seaside rivuletweed, or Samolus valerandi, is a small bog plant distributed in almost all the world. It prefers wet ground on and in fresh and brackish water. In Central Europe it can be found in brackish reeds near the coast, among others.

This plant has around 15 cm high light green spreading leaf rosettes. The leaves are oblanceolate to obovate and look a little like lamb's lettuce (Valerianella). The leaf tip is round, the margin runs down along the leaf stalk.
The flower stalks appear on emersed plants, grow to a height of 10 to 50 cm and carry alternate leaves that grow smaller to the top. They bring forth numerous tiny inconspicuous white flowers. The fruit are round capsules which have five caps that open and release many small seeds.

To be continued...

References and further reading:
  1. Kasselmann, C. (2010): Aquarienpflanzen. 3rd edition (German). - DATZ Aquarienbuch, Ulmer Verlag, Stuttgart: p. 514.
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