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Drosera tokaiensis (formerly
known as Drosera spatulata "Kansai") is
native to Japan. The largest of the plants in the picture
is 25 mm wide. The plants can get to twice that size.
Drosera tokaiensis is
easy to grow. It is common in
CP collections and also commonly misidentified. |
Species of the Drosera spatulata group are found from New
Zealand, Tasmania, and Australia, through southern Asia, and into
China and Japan. This group is in desperate need of taxonomic study.
Depending on your point of view, other species in the group include
Drosera tokaiensis and Drosera spatulata ssp. lovellae
or Drosera lovellae.
There are a number of chromosomal races currently lumped into
Drosera spatulata. And within each chromosomal race there are
plant form
varieties. The
variation
from location
to
location
can
be quite extreme within Australia, Tasmania, and New Zealand. The
smallest forms get to about 2 cm wide. The largest is the 7 cm
wide
Lovellae form found on Fraser Island, Queensland,
Australia. The forms in Australia tend to have long spatulate
(spoon)
to cuneate (cone shaped) leaves with the petiole being short and
gradating into the lamina. New Zealand forms tend to have leaves
with the petiole longer than the lamina with the lamina being orbicular
(round) to cuneate-obovate (flattened oval). Tasmania has both
forms.
To make matters even more interesting, there are distinct subtropical,
temperate, and alpine forms.
The species Drosera tokaiensis appears to have resulted
from natural hybridization between Drosera rotundifolia and
the Kanto form of Drosera
spatulata. A plant appearing to be the first generation
hybrid is sterile and has been given the name D.
tokaiensis ssp. hyugaensis. D. tokaiensis has
twice as many chromosomes as D. tokaiensis ssp. hyugaensis and
is quite fertile and vigorous.
| D. tokaiensis is much easier to grow than any of the D.
spatulata varieties and it is quite possible that many
of the D. spatulata seeds distributed by the Seed
Bank were actually D. tokaiensis. |
The subtropical and temperate forms of Drosera spatulata
and its related species and hybrids make excellent additions to
any terrarium. Some may do better during cooler times of the year
while other like it warm. In the seed bank, anything listed as plain
Drosera spatulata could be any variety. Known varieties will
be listed when possible. Quite often, the rarer forms are only available
to seed donors.
Drosera spatulata isn't very picky about soil. It grows
well in pure sphagnum moss as well as the standard 1:1 peat:sand
"CP mix". It will tend to be redder in peat and under
brighter light.
Sow seeds of Drosera spatulata on the surface of your medium
of choice. Finely chopped live sphagnum moss over long fibered sphagnum
moss or CP mix works very well but the moss can overgrow the plants.
Finely chopped dead sphagnum or sand over CP mix also work well.
What you do next depends on what works best for you. Everyone has their
own preferred routine. I put pots with seeds in plastic zip-lock bags
under but not too close to fluorescent lights. You could also use an aquarium in a greenhouse. The purpose of the plastic bag is to maintain very high humidity and to keep out fungus gnats. Fungus gnat larvae will eat the seedlings. A temperature between 20°C
to 25°C (70°F to 80°F) works best. The seeds should germinate in a few weeks. When the new plants have a few true leaves, remove
the pots from the plastic bags and put them in a bright terrarium or greenhouse. The seedlings may be a little slow growing at first. Have patience.
Once the plants are large enough you can try feeding them small insects
or get some dried blood worms at a pet shop. The dried blood worms can
be dipped in water and placed on the dewy leaves--don't feed a plant that
isn't dewy. If the food gets moldy, use less next time. A dab of 70% isopropanol
(rubbing alcohol) from a small paint brush will kill the fungus.
A happy Drosera spatulata can live for years. The plants
tend to go though cycles of growth and semi-dormancy. They can easily
be propagated from leaf cuttings when actively growing. When they
bloom, save the seeds to grow more. If you have lots of seed, send
the extra in to the Seed Bank.

Drosera spatulata
from Queensland, Australia. This 20 mm wide plant is of the
typical Australian form, only small. It looks a lot like a miniature
Drosera aliciae. |

Drosera spatulata
from Stewart Island, New Zealand. This 20 mm wide plant prefers
cooler conditions as found in its native habitat. |
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Drosera spatulata from
Hong Kong. These plants are about 35 mm wide. Note
the D. spatulata from
Stewart Island in the lower right corner. Bad. Drosera
spatulata from Hong Kong is one of the easier D. spatuata varieties and has been
given the cultivar name 'Ruby Slippers'. |
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