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-   -   D Tokaiensis (https://forum.petpitcher.net/showthread.php?t=1342)

bactrus 14th October 2008 12:00 PM

D Tokaiensis Double head- Hydra
 
Been sometime since I posted any picture.

Wondering if this is normal. My D Tokaiensis developed another growning terminal after its last flowering. Now it has two heads which I nickname as hydra.

Top View
https://forum.petpitcher.net/picture....&pictureid=260

Head One
https://forum.petpitcher.net/picture....&pictureid=261

Head two
https://forum.petpitcher.net/picture....&pictureid=262

plantlover 14th October 2008 01:29 PM

Re: D Tokaiensis Double head- Hydra
 
One of my intermedia is doing this too.

bactrus 14th October 2008 01:59 PM

Re: D Tokaiensis Double head- Hydra
 
All of my intermedia do this. You're gonna have messy multi head intermedia soon

plantlover 14th October 2008 02:05 PM

Re: D Tokaiensis Double head- Hydra
 
I have another one that has about 4 heads too. Thats the plant I got from ou,Bactrus.

Khoas 14th October 2008 04:50 PM

Re: D Tokaiensis
 
I seen this with aliciae and the mexican pings. The process of forming a flower stalk cause the growing point to spilt into two forming a multi header or clump.

David 14th October 2008 06:53 PM

Re: D Tokaiensis
 
Nice healthy plant. I see your tokienensis have captured a nice juicy insect... look so tasty... sorry, off topic. :tongue:

bactrus 15th October 2008 12:44 PM

Re: D Tokaiensis
 
Wonder if it can form another head or two. May become like intermedia.

David, it didn't capture the insect. I captured the insect then fed the plant. This papa hand feed all his plants at least once a week.

arvin555 17th October 2008 01:18 AM

Re: D Tokaiensis
 
May I know the biggest difference between Spatulata and Tokiensis? Unfortunately for me they look the same :(

I do love Rosette Droseras :)

TTFN
Arvin

David 17th October 2008 01:25 AM

Re: D Tokaiensis
 
Yaa, I would also like to know what the difference is. I have both and they look excatly the same to me too. Perhaps it's the location where they come from. Anyway, lets wait for some help here.

bactrus 17th October 2008 10:38 AM

Re: D Tokaiensis
 
The international CP cite says a little but... what is the diff??? The spatulata I have are till tiny, otherwise I'll plant them side by side to observe

shawnintland 17th October 2008 11:00 AM

Re: D Tokaiensis
 
Hmmmm, I was just looking at some diagrams showing leaf shape and cross section of various Drosea in comparision...if I could only remember which of the few hundred CP web sites I've bookmarked this week it was on we'd be all set! I'll have a look!

arvin555 17th October 2008 12:21 PM

Re: D Tokaiensis
 
Thanks guys, hope we can figure out the difference together, don't have Tokeinsis only Spatulata but when I saw the photo, I thought, hey that looks like my Spatulata. :)

The Tokeinsis isn't a hybrid is it?

TTFN
Arvin

arvin555 21st October 2008 01:25 PM

Re: D Tokaiensis
 
Wait, I just saw David's Growlist and in his collection there is D. Tokeinsis, what surprised me though is that he had it in parenthesis and it said (Spatulata var. Kansai) eh? So is it a Spatulata found in Japan and called differently? Weird!

David can you please comment? :)

TTFN
Arvin

shawnintland 21st October 2008 01:35 PM

Re: D Tokaiensis
 
A few notes regarding our discussion;

From Wikipedia - "Drosera tokaiensis is a carnivorous plant native to Japan. The species was previously thought to be a subspecies or variety of Drosera spatulata."

From ;http://www-cp.stech.co.jp/cp/dro/D-tokaiensis_e.html

  • spatulata var. kansai = tokaiensis
  • spatulata ssp. tokaiensis = tokaiensis
Distribution:Tokai area Japan
Remark:
D.tokaiensis = (rotundifolia x spatulata)?
From http://www3.interscience.wiley.com/j...RY=1&SRETRY=0;
Life history traits and coexistence of an amphidiploid, Drosera tokaiensis, and its parental species, D. rotundifolia and D. spatulata (Droseraceae)

Abstract; We compared the life history traits of an amphidiploid species, Drosera tokaiensis (Komiya & C. Shibata) T. Nakamura & Ueda, with those of the parental species, a diploid Drosera rotundifolia L and a tetraploid Drosera spatulata Labill. to characterize them and clarify the conditions for coexistence. The ranges of the parental species are quite different, but overlap in Japan. The amphidiploid and the parents grow together in some natural habitats. Observations and experiments on reproductive properties were carried out in a glasshouse and a laboratory. Seeds of D. rotundifolia were dormant, whereas those of D. spatulata were not. In D. tokaiensis, the dormant/non-dormant seed ratio varied from site to site. Drosera rotundifolia has such life history traits as concentrated flowering and seed dormancy, which are relevant to habitats with short growing seasons and a severe winter. Drosera spatulata has such traits as a prolonged duration of flowering and non-dormancy, relevant to habitats with long growing seasons and a mild winter. Drosera tokaiensis possesses life history traits of the parental species to various degrees, but exhibits no extreme traits. It is suggested that separation of flowering time and autogamy allow the amphidiploid to coexist with the parental species.

From http://www.carnivorousplants.org/see...spatulata.htm;
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.

I'm sure there's more info out there but this should give us something to work from. :biggrin:


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