The Search for New Aquarium Plants
by Holger Windeløv and Claus Christensen
of Tropica Aquatic Plants, Denmark
Aquarticles
It was November and the rain was pouring down. The roads leading to and from the
villages were flooded, and people waded through streams which had once been streets. We
were on our way south through Thailand, and the rainy season should have been over. But
the weather gods had obviously decided to desert us on this occasion!
Twenty kilometres south of Ranong we re-visited a place where we knew Cyperus
helferi grew, hoping to find plenty of seeds for use in propagating new plants.
Unfortunately, Cyperus was not common here after all, and the original discovery in 1991
must simply have been a stroke of good fortune (note 1). But Baclaya longifolia
was in flower here. When Holger Windeløv visited this site for the first time with a
local collector, he had been told that Cyperus was not suitable for aquariums because it
was only a weed. This is a common attitude - finding good plants for aquariums often
involves seeing them from a different angle. Ranong is the best place to stay in this
region. In fact, it is the only place you can find a hotel within several hundred
kilometres! But it is also an exciting big city full of the sights and smells of the
mysterious Orient - a wonderful place to stay. In the restaurant at the "Jansons
Terra" hotel we experienced Thailand's version of karaoke - called "Sing a
song". The aspiring local musical talents took turns to try and please the audience,
singing melancholy songs about problems of the heart. There is a local musical genre which
is actually known as "Broken Heart", and this seemed to be the most popular. But
there were more cheerful songs as well, including both Chinese and Laotian folk music. The
dress of the performers is hard to describe, but we Danes thought the tulle and thousands
of sequins in which the girls performed seemed a little artificial as they flashed in the
spotlights.

The evening was relatively cool, and we soon grew hungry. The best "Pad-Thai"
in Ranong is to be found at the local night market. At first sight the hygienic conditions
might look rather dangerous for tender European stomachs - but actually the food is fresh
and carefully fried. "Pad-Thai" consists of fried vegetables with noodles and
delicious spices, often containing aquatic plants such as "Blyxa".

The next morning we got up early to try a hot jacuzzi. The water comes from the hot
springs which have given their name to the hotel, and the jacuzzi is large and round with
room for 50 people. The fish market is also at its best in the morning because there is so
much life down at the harbour at that time. The fishing boats tie up and dozens of workers
unload masses of colourful fish caught on the coral reef. The harbour and town are also
known as the focal point for a good deal of smuggling between Burma and Thailand. Dozens
of so-called "long-tail boats" ply their trade across the narrow strait here,
carrying both people and goods. For a few "Bath" you can hire a boat that looks
like a long, narrow canoe. An old car engine powers a propeller mounted on an extended
shaft, looking like an enormous electrical whisk whipping up the water. We boarded one of
these craft for a trip in the direction of Burma, or "Myanmar" as it is now
known.

There is an invisible border in the water running between Thailand and Myanmar.
Unfortunately, we took a few photographs without knowing that we had crossed this
invisible line, and the Myanmar coastguard pulled us in. We were taken ashore and had to
pay a fine for crossing the border. But we were then allowed to look around the harbour
town of Kawthaung - the local authorities had no wish to miss out on a potential source of
income, and did not want to frighten other offenders away!
Claus
Our trip continued down the west coast of Thailand, the next stop being Ban Tumnang.
The river Yar Shong Nang Klam varies enormously here over a short, 5-kilometre stretch.
First it runs through a number of small lakes on a mountain plateau. Then it tumbles down
a beautiful waterfall in the rain forest, after which it winds lazily through the forest
and ends up in the paddy fields of the lowlands. In this short stretch of water we found
more than 10 well-known varieties of aquarium plants (note 2).

Cryptocoryne albida was growing out of cracks in the cliff under the waterfall
- the first time it has been recorded growing in this environment. Microsorum pteropus
was growing under the cliffs where it was protected from the power of the water, but was
also thriving on cliffs which were constantly exposed to spray from the fall. We collected
a few Microsorum specimens here to refresh Tropica's genetic material. As we walked
through the rain forest we had to keep picking off the leeches, which live both in the
water and in the damp vegetation. The largest of them live in the water, and can grow up
to 6-7 cm. But even when you manage to get them off, you are left with a cut which bleeds
for a long time because it has a "Y" shape which keeps it open.

Once out of the rain forest the river flows through the lowlands, where the vegetation
is more open. Crinum thaianum is common here, and is only to be found in this
area. On our first visit the water level was high (a couple of metres), but the long,
tape-shaped leaves waved in the stream growing to a length of more than five metres. The
local people make a skin cream of Crinum bulbs, lemon and the local fruit known as
"Kmatang". This beauty cream is supposed to keep your skin soft and smooth.
Nearer the coast we found Cryptocoryne albida again, flowering in shallow areas
with a gravel bottom along the river. Alongside the Cryptocoryne crispatula we
also found a broad-leaved variety of Hygrophila polysperma.
Holger
Thousands of Cryptocoryne albida were growing in a small river a little
further south, both under the water and between the stones on small islands. Once again we
learnt something new and unexpected about aquarium plants. On the banks of a small shallow
pond near the river we found Cryptocoryne albida growing in the heat of the
blazing sun. The water in which the roots were growing was so hot I could not stand in it
to take my photographs. I measured the temperature of the water, and the reading went
above the 50ºC maximum on the thermometer.

Further south we stopped again in a small, dusty village. The combined restaurant and
grocer's shop was based in a garage. The wife ran what they called the restaurant, and the
husband was the local purchaser of crude rubber. The rubber lay around in piles, looking
like a heap of bath mats. Once again the local cuisine was a wonderful experience.
"Tom Gar Kai" is chicken soup containing coconut milk, coriander, galangal,
"lemon grass", small chilli peppers and many more ingredients which I can no
longer remember. The cuisine in Thailand manages to succeed in the rare and difficult art
of mixing a great number of spices and herbs without drowning the individual taste
sensations. Each taste plays its part like an instrument in an orchestra, and the coconut
milk makes what would otherwise be an extremely spicy soup highly delicious to western
palates. Further south we found Cryptocoryne cordata (Blasii variety), Baclaya
longifolia, broad-leaved.

The trip ended in fine style with a quick diving holiday on board the good ship
"Similan II". It takes 6 hours to sail from Ban Lam Ru out to the Similan
archipelago, which is one of the 10 best places to go diving in the world. The archipelago
lies a long way from the mainland in the Andaman Sea between Thailand, Myanmar and India,
so the water here is crystal-clear. Coral that only grows to a height of 50 cm near the
coast grows up to several metres here. The fauna is spectacular, ranging from the
fascinating life of the coral reef to the large fish and marine mammals that thrive in the
open sea (note 3).
NOTES:
(1) Cyperus helferi is now propagated using seeds from Tropica's own stock plants
obtained from our original collection trip. We also carry out small-scale production in
our plant tissue laboratory.
(2) Here is a list of plants found in the river near Yar Shong Nang Klam: Microsorum
pteropus, Cryptocoryne albida ("Costata"), Cryptocoryne crispatula
var. flaccidifolia (formerly known as narrow-leaved C. balancea), Hygrophila
polysperma (broad-leaved variety), Hygrophila siamensis, Limnophila
sessiliflora, Crinum thaianum, Ceratopteris thalictroides, Blyxa aubertii, Slavinia.
(3) The photos were taken with a "Nikonos-V" and two "Nikonos 103"
flashes.
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