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A wide river in the Guangdong province in China.
Zhou0603-1
photo Zhou |
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C. crispatula var. flaccidifolia is growing - nearly visible - sheltered between the boulders.
coll. Zhou 0603-1
photo Zhou
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More sheltered in the Guangxi province.
coll. ZH2010-02
photo Zhou |
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Here grows it near the banks of the river..
coll. ZH2010-02
photo Zhou
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The Hanoi group searching for var. tonkinensis in north Vietnam...
photo Ørgaard
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... quite difficult to reach the stream.
photo Ørgaard
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Where they found it.
photo Ørgaard
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An uprooted C. crispatula var. tonkinensis.
photo Ørgaard
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A slowly running river in S China ...
coll. Zhou 0504-3
photo Zhou
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... with C. crispatula var. tonkinensis...
coll. Zhou 0504-3
photo Zhou
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...flowering.
coll. ZH2010-02
photo Zhou
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Flowering abundantly!
coll. ZH2012
photo Zhou
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Two different colour forms growing near to each other in another river.
coll. Zhou 2010-02 and -03
photo Zhou
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Another dark brown coloured plant.
coll. Zhou0603-1
photo Zhou
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Herbarium sheet Balansa 2044 from Vietnam, type for C. crispatula var. tonkinensis
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Var. tonkinensis grows easily in an aquarium.
coll. ZH2010-03, cult. B1354
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The rhizome tends to grow up from the soil, the plants also makes roots growing into the free water.
coll. ØJV13-4, cult. B1594
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The Vietnam tonkinensis grows very well in the aquarium.
coll. ØJV13-4, cult. B1594
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As does the Chinese C. crispatula var. tonkinensis.
coll. ZH2010-03, cult. B1354
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A close up of the attractive brown leaves.
coll. ZH2010-03, cult. B1354
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The typical Crispatula limb with a few red lines on the whitish limb.
photo Zhou
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The kettle from the Chinese C. crispatula var. tonkinensis.
coll. Zhou 0603
photo Zhou
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Globular fruits of C. crispatula var. tonkinensis
coll. Zhou 0603
photo Zhou
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Distribution of C. crispatula var. tonkinensis. In fact they even grow much more eastern as visible on the map.
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It is not known if var. tonkinensis has a seasonal character.
For reference to the other plants and for more literature see the page on the crispatula group.
Updated January 2016 |
Literature:
- Gagnepain, F., 1941. Aracees nouvelles Indochinoises. Not.Syst.9, 3 : 131-134. (Document service - in French)
- Gagnepain, F., 1942. Cryptocoryne Fisch. Flore generale de l'Indo-Chine : 1191-1195. (Document service - in French)
- Jacobsen, N., J.D.Bastmeijer, J. Bogner, V.D. Nguyen, Q.B. Hong & M. Ørgaard. 2015. The identity of Cryptocoryne crispatula var. tonkinensis (Araceae). Willdenowia 45(2) 177-182. (Document service)
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