Cryptocoryne × Willisii
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''Cryptocoryne'' × ''willisii'' is a plant in the family
Araceae The Araceae are a family of monocotyledonous flowering plants in which flowers are borne on a type of inflorescence called a spadix. The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe (or leaf-like bract). Also ...
.


Synonyms

''Cryptocoryne nevillii'' (a valid but different species); ''C. lucens'' is now considered a
hybrid Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two diff ...
in the ''C.'' × ''willisii'' complex


Taxonomy

In 1976 Niels Jacobsen proposed the change of name of ''C. nevillii'' to ''C.'' × ''willisii''. This plant is a natural hybrid, so the name is spelt with a cross: ''C.'' × ''willisii''.
Crypts page ''C. nevillii''


Distribution

Sri Lanka (Kandy area)


Description

The
leaves A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, ...
and even the
spathe In botany, a bract is a modified or specialized leaf, associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves in size, color, shape or texture. They also look ...
of this plant are variable (no doubt due to its hybrid nature). The crypts page (see link below) illustrate a number of different forms which makes identification difficult. Cryptocoryne x willisi is a smaller member of the genus along with cryptocoryne parva, and may only reach up to 5cm in size.


Cultivation

Not difficult to grow and common in
aquariums An aquarium (: aquariums or aquaria) is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. fishkeeping, Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aquati ...
but some forms do not seem to
flower Flowers, also known as blooms and blossoms, are the reproductive structures of flowering plants ( angiosperms). Typically, they are structured in four circular levels, called whorls, around the end of a stalk. These whorls include: calyx, m ...
.


References

* Alston, A.H.G., 1938. Cryptocoryne in: The Kandy Flora : 68, fig.363-367 (with some drawings). * Jacobsen, N., 1987. Cryptocoryne in: A Revised Handbook to the Flora of Ceylon, Vol. VI: 85-99 * Wit, H.C.D.de, 1969. Cryptocoryne nevillii Trim. ex Hook.f.. Het Aquarium 39(11) : 242-245.


External links


Crypts pages ''C. undulata''

Tropica

AquaHobby
{{DEFAULTSORT:Cryptocoryne willisii willisii Aquatic plants Hybrid plants