Cryptocoryne × willisii "nevillii"

Aquarium suitability: yes
Usage: Midground, Nano tanks, Foreground, group, Foreground, ground cover
Difficulty: easy
Growth: slow
See also: Cryptocoryne nevillii , Cryptocoryne × willisii "lucens"
Range and localities: 

Central highland of Sri Lanka (near Kandy)

Misapplied names: 
  • Cryptocoryne nevillii

Habit, plant type:

  • rosette
Botanical name [?]: Cryptocóryne × willísii Reitz

Major group (unranked): Seed plants: Flowering plants (Angiosperms)
Order: Alismatales
Family: Araceae
Genus: Cryptocoryne


This Cryptocoryne is a very popular, undemanding, low-growing aquarium plant that reproduces through runners, forming nice ground-covering carpets. It was long known under the name "Cryptocoryne nevillii", and sometimes still is. In 1976, Niels Jacobsen found out that it really belongs to the hybrid complex of Cryptocoryne x willisii, whereas Cryptocoryne nevillii is the name of an altogether different species that has nothing to do with C. x willisii.

Cryptocoryne parva was also (and sometimes still is) erroneously called "Cryptocoryne nevillii" in the aquarium hobby.

The group of C. x willisii originates from riverbanks in the central highlands of Sri Lanka. The plant originally described as Cryptocoryne lucens also belongs to this complex (see Cryptocoryne x willisii “lucens”). It can be discerned from C. x willisii "nevillii" when cultivated under the same conditions by its longer very narrowly lanceolate leaves. The leaf blades of C. x willisii "nevillii" are shorter, longish-ovate to lanceolate. In both varieties, the upper sides of the leaves are medium green and show no pattern.
Both varieties cannot always safely be discerned from each other, and, in addition, some more forms of C. x willisii are in cultivation. Small plants of C. x willisii may closely resemble C. parva.

- to be completed -

Light low to high 
Temperature tolerance 15 to 30 °C
Optimum temperature 22 to 28 °C
Carbonate hardness 1 to 18 °dKH
pH value 4.5 to 8 
Carbon dioxide (CO2) 5 to 40 mg/l
Nitrate (NO3-) 10 to 50 mg/l
Phosphate (PO43-) 0.1 to 3 mg/l
Potassium (K+) 5 to 30 mg/l
Iron (Fe) 0.01 to 0.5 mg/l

Growth: slow

Propagation: Runners, Rhizomteilung, Splitting, cutting off daughter plants

Can grow emersed?: yes

Suited for outdoor cultivation / ponds: unknown

Winter hardiness: not hardy in Germany

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Wasserpflanzen sind ein fester Bestandteil der meisten Aquarien. Beim Aquascaping, dem Naturaquarium, Biotop-Aquarium oder dem Gesellschaftsaquarium sind Wasserpflanzen nicht nur für die Wasserqualität entscheidend, sondern sorgen auch stets für eine optische Aufwertung des Aquariums.