Wednesday, 4 October 2017

Cryptocoryne crispatula var. balansae spathe

Crypt crispatula balansae spathe
Crypt crispatula balansae spathe

This is an emersed pot of a generic Crypt . crispatula that came to me unlabelled so at some point I called it 'balanasae' on the basis of the submersed leaves.  Emersed the leaves looks a bit like flaccifolia - due the uncertain ID its not a plant I care about so much - but  I like to celebrate a spathe and one day I might be more confident with the ID of this one.

Cryptocoryne undulata 'green' (Aquafleur)

Cryptocoryne undulata green
Cryptocoryne undulata green spathe

Crypt. undulata 'green' distributed in europe by Aquafleur.  The spathe looks a little C. wendtii to me but it may not be fully open yet.   Its not in the greatest of condition (the pot is infested with blue-green algae) but the leaves are certainly bottle green and appear to stay green under high light. The "regular" C. undulata we have in Australia has a bit more olive green/muddy brown colour.

Cryptocoryne albida 'costata' (Dennerle Cryptocoryne costata)

Cryptocoryne albida costata spathe

Cryptocoryne albida costata spathe

Cryptocoryne albida costata spathe
This variety of Crypt. albida is distributed in europe by Dennerle under the synonym Cryptocoryne costata. It has a very narrow tall "trumpet" with a twist at the top.  I have a second plant of this variety that has two older spathes on at the moment that looks the same and didn't unroll further.   It seems quite different to another Crypt. albida 'costata' that I obtained from an Australian grower that has much fatter and more open spathes.

Saturday, 2 September 2017

Cryptocoryne cordata var. siamensis "Red Giant"

Cryptocoryne cordata var siamensis 'Red Giant'
I was lucky enough to score a piece of this Crypt from a local shop display tank.  I normally use small 95mm square pots for my crypts but this was a big crypt so it went in a  150mm pot and is in a 600l 6x2x2 tank (sharing with some purple spotted gudgeons).  Its a big crypt -  currently 40cm tall and the biggest leaf blades are 20x7cm excluding the petiole.  A few sellers in Australia recently have been selling a  Crypt cordata named "Red Giant" so I'm assuming this is the same - the undersides of the leaves are very red.  There are a few other similar plants in Australia at the moment: A Crypt cordata distributed by Dennerle, and another Dennerle variety sold as Crypt. x purpurea but clearly both are varieties of Crypt cordata var. siamensis.

  "To make a long story short: almost all Cryptocoryne cordata plants in our aquaria today belong to var. siamensis. If you have it growing successfully in your aquarium there is a more than 90% chance that it is var. siamensis. And even if it is not growing well, there is probably still a more than a 90% chance that it is var. siamensis. If it were one of the other varieties of Cryptocoryne cordata it would most likely be dead by now.  Of course, if you are one of the few people keeping aquaria with a pH of 4 – 5, you may have something else, but even then there is a good chance that you may have var. siamensis."

Jacobsen, N., and Bastmeijer, J.D. 2014. On Cryptocoryne cordata var. siamensis. Aquatic Gardener 27(3): 29–39.

Friday, 1 September 2017

Cryptocoryne ferruginea update

Quite a disappointing  recovery so far but fingers are still crossed for success.  One stem has rotted without shooting.  The other stem threw a couple of leaves then stopped and also rotted (the big leaf), but the other end of the stem has now shot again so fingers crossed.  The media is plain peat moss and sand watered by rainwater (pH 5.5 to 6.0) to provide acidic conditions.  I put some alder cones in the water to push the pH down a bit lower but they don't seem to have much effect.  I've tried oak leaves and beech leaves so far but still only getting pH down to 5.5 to 6 and I think I need to push it a bit lower (more acidic).