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Post by bluesboy on Dec 20, 2007 1:32:07 GMT
Hi guys/girls, I posted a thread a number of months ago about a sundew I started from seed collected in south africa, but the collectors weren't sure what sp. it was. Now that it's flowered a number of times and really grown on, I was looking thru Sundewmatt's pictures on his website, and couldn't help but think that this sundew I'm growing looks a lot like one of his referred to as Drosera sp. 'Rhodesia'. If I remember rightly I think a Drosera 'Rhodesia' was registered as a cultivar a little while ago by the ICPS(?), though the parentage wasn't known at the time, and as far as I know still isn't known. I'm not sure if D. sp 'Rhodesia' and D. 'Rhodesia' are different then. All I know is it's a beautiful, big(around 4-5" diameter) sundew. Hopefully Sundewmatt doesn't mind that I'm providing a link to his sp. 'Rhodesia' to compare his and mine for similarities-it's all in the interest of anything sundew, so I know he should understand that, from what I know about him and sundews  ; the pictures address is; sundewgrower.com/pics/sp_rhodesia.jpgthis is a picture of one of mine  Here's another plant, same seed lot  Note how both his and mine have lamina that seem to open by spreading from the central lateral in kind of a strange fashion. Well, what do you all think- do you think I got the 'Rhodesia' that Sundewmatt's got? Hope to see what you think, see ya, Nick, bluesboy |
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Post by ICPS-bob on Dec 20, 2007 2:05:08 GMT
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Post by bluesboy on Dec 20, 2007 2:14:10 GMT
Hmmm... thanks bob- in that case, it doesn't look very similar to the cultivar, and obviously wasn't propagated vegetatively.... well anyone got any other ideas. Before I start spreading this plant to other growers I don't wan't what happened to the above cultivar to happen here if I can prevent it; in other words circulating a plant that no one knows what it is, and accumulates a whole bunch of different names from different people for the same thing.... which happens waaaayy too much. Thank in advance, 'bluesboy' |
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Post by Christian on Dec 20, 2007 10:27:16 GMT
Hi,
to me it looks like something in the D. dielsiana/natalensis-complex. It might also be D. aliciae. Do you have pictures of the flowers or seeds?
Btw, it is very green. How much light does it get?
Christian
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Post by Joseph Clemens on Dec 24, 2007 7:55:50 GMT
What Christian Dietz said, "BTW, it is very green. How much light does it get?"
Without a healthy light level the leaves will not be true to form. Their form may change if the plant is grown in stronger light levels, or it may not, but if they are not grown in both conditions, we may never know if they show a different form in other conditions.
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Post by bluesboy on Dec 25, 2007 0:28:45 GMT
What Christian Dietz said, "BTW, it is very green. How much light does it get?" Without a healthy light level the leaves will not be true to form. Their form may change if the plant is grown in stronger light levels, or it may not, but if they are not grown in both conditions, we may never know if they show a different form in other conditions. Hi Joseph, Let me clear this up; the plant in question is not very green because of lack of light; please see my following photos. It is green because that is the phenotype of the plant- it grows right next to the aliciae that you can see to the left in the pics, which has much more color. Also, please see the Heliamphora nutans, which grows next to both- if you'll notice the Heliamphora shows that the area is experiencing very strong light by the very well developed pitchers and nectar spoons- not only does it get morning sun, but there are 4, 40 watt, 48" fluros above all of these plants 14 hrs a day. So let me assure you there is no lack of light. Also, to add- the aliciae was seed from Silverhill- the unknown is also from silverhill- they don't look too similar, even under the same conditions. Hope this clears things up a bit, but fear it just makes things more confusing, although I'm inclined to go with what Christian has said... any more ideas, love to hear 'em? See the pics below. Thanks, Nick aliciae on left, unknown right  aliciae and unknown on bottom left- Heli nutans(in flower right now) is obvious- all growing together under same lighting  |
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Post by sarracenialover on Dec 26, 2007 13:37:53 GMT
Nice collection
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Post by Dave Evans on Jan 7, 2008 8:09:19 GMT
Dear Bluesboy,
Those Drosera could use more light. While the other pitcher plants are getting the perfect amount of light, they are in taller pots and are shading your sundews. They actually want a bit more light than the pitcher plants, so right now their lighting levels are sort of in reverse.
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Post by trimen1000 on Jan 9, 2008 10:12:31 GMT
The Heliamphora would also probably enjoy more light.
No matter what the sundew is, it's a nice one.
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Post by RL7836 on Jan 28, 2008 22:07:44 GMT
Those Drosera could use more light. While the other pitcher plants are getting the perfect amount of light, they are in taller pots and are shading your sundews. They actually want a bit more light than the pitcher plants, so right now their lighting levels are sort of in reverse. One of the things that many people tend to misunderstand is the relationship between light & distance. The intensity of light drops by the square of the distance. Light intensity = K / D*D where K is a constant for a given light source & D is the distance to the source. Looking at your tank photo - If I assume that the top of the Heliamphora is 1 inch from your lights and the sundew is 8 inches, then the sundew is receiving light that has 1/64 of the intensity of that received by the top of the heli. Another way to look at this - if you cut the distance in half, you don't double the intensity, you increase it by a factor of 4.* * - hopefully I didn't screw up the numbers. If I did, I'm sure someone will correct me. ;D |
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; the pictures address is;
