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C. thwaitessi

>Can anybody tell me anything about C. thwaitessi? General care,
appearance...hard? easy?


(where there are some great pictures)

Cryptocoryne thwaitesii is not easy to cultivate. It prefers rather acid
making a soil mixture with beech tree soil appropiate for emersed culture. This
plant is hardly to keep in an aquarium. 
Differences with the closely related genus C. alba are the lenght of the
tube, the
spotted limb of the spathe, the pronouced tail of the limb and the texture
of the
leaves. But you must keep in mind that in C. alba the variation is very big. The
other close related species C. bogneri has the same texture of the leaves
but has a
rather short limb of the spathe. 

Jan D.Bastmeijer, 1 August 1998


Arends, J.C., Bastmeijer, J.D. & Jacobsen, N., 1982, Chromosome numbers and
taxonomy in
Cryptocoryne (Araceae).II., Nord.J.Bot. 2 : 453-463.
Bastmeijer, J.D., C. Christensen & N. Jacobsen, 1984, Cryptocoryne alba und ihre
Variationsbreite, Aqua-Planta 1-84 : 18-22.
Bastmeijer, J.D. & C. Kettner, 1993, Die Cryptocorynen von Yahalawatta (Sri
Aqua-Planta 1-93 : 30-31.
Graaf, A. de & Arends, J.C., 1986, The occurrence of Cryptocoryne and
Lagenandra (Araceae)
on Sri Lanka, Nord.J.Bot. 6 : 757-764.
Hermsen, E.P., 1977, Cryptocorynen, Het Aquarium 47(11) : 282-287.
Jacobsen, N., 1976, Notes on Cryptocoryne of Sri Lanka (Ceylon), Bot.Notiser
129 : 179-190.
Jacobsen, N., 1977, Chromosome numbers and taxonomy in Cryptocoryne (Araceae),
Bot.Notiser 130 : 71-87.
Jacobsen, N., 1982, Cryptocorynen, Alfred Kernen Verlag, Stuttgart.
Jacobsen, N., 1987, Cryptocoryne, in: A Revised Handbook to the Flora of
Ceylon, Vol. VI:
Kasselmann, C., 1995, Aquarienpflanzen, Ulmer, Stuttgart.
Möhlmann, F., 1987, Der Weisse Wasserkelch, Aquarien Magazin 21(11) : 436-438.
Möhlmann, F., 1993, Die Cryptocoryne-Arten Ceylons (1), Aqua-Planta 4-93 :
Wit, H.C.D. de, 1975, Cryptocoryne alba de Wit (nov.sp.) en Cryptocoryne
bogneri de Wit
(nov.sp.), Het Aquarium 45(12) : 326-327.
Wit, H.C.D. de, 1990, Aquarienpflanzen, 2. Auflage, Ulmer, Stuttgart.

Richard J. Sexton                                         richard at aquaria_net
Maitland House, Bannockburn, Ontario, Canada, K0K 1Y0       +1 (613) 473 1719