Cryptocoryne x willisii "nevillii" Willis' water trumpet

This crypt is a time-tested, undemanding medium-green aquarium plant that forms a relatively low medium-green lawn after some time by growing runners. Its leaves are wider, and it grows much faster than the tiny Cryptocoryne parva. For a long time it has been popular under the erroneous name of "Cryptocoryne nevillii", but today it is counted among Cryptocoryne × willisii, a very variable hybrid complex from Crypocoryne parva and other Sri Lankan species such as C. beckettii and C. walkeri. Its submerged leaves are mostly medium green, sometimes also with brownish tones. The plant is mostly delivered in its terrestrial form that can develop leaves on very long stalks, however its submerged foliage stays a lot shorter. Cryptocoryne × willisii "lucens" looks rather similar, but Cryptocoryne × willisii "nevillii" has shorter more ovate leaf blades. 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 × willisii, whereas Cryptocoryne nevillii is the name of an altogether different species that has nothing to do with C. × willisii. Cryptocoryne parva was also (and sometimes still is) erroneously called "Cryptocoryne nevillii" in the aquarium hobby. The group of C. × 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 × willisii “lucens”). It can be discerned from C. × willisii "nevillii" when cultivated under the same conditions by its longer very narrowly lanceolate leaves. The leaf blades of C. × 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. × willisii are in cultivation. Small plants of C. × willisii may closely resemble C. parva. -to be completed -

Flowgrow

Low-growing green Crypt Robust and undemanding Elongate ovate leaves Lawnlike growth habit

Cryptocóryne × willísii Reitz

Araceae

Cryptocoryne

Cryptocoryne nevillii

Middle Ground

easy

slow

4-8

15-30℃

1-18 dKH

0-30 °dGH

Runners, Rhizomteilung, Splitting, Cutting off daughter plants

yes