Colchicum 2013

[mark smyth]

That's a fantastic pot full. Mine finished flowering weeks ago. Is this form always late? My plants were in full flower at the end of September

[Darren]

That's a fantastic pot full. Mine finished flowering weeks ago. Is this form always late? My plants were in full flower at the end of September

It usually flowers late October and (frustratingly) misses the Ponteland show by about two weeks!

[mark smyth]

It usually flowers late October and (frustratingly) misses the Ponteland show by about two weeks!

If you are ever dividing it I'd buy a couple off you and see if they will extend my season

[pehe]

Colchicum troodi, I believe (collected at 400m in the Taurus mountains, Turkey) 
Colchicum psaridis

Poul

[Oron Peri]

Poul,
Your Colchicum is C. deicasnei which distribution is from S. Turkey down to North Israel.
C. trodii as it appear is endemic to the Toodos Mt. in Cyprus.

[pehe]

Oron, I am no Colchicum expert,  and you may be right about deicasnei but I have read in Flora of Turkey that trodii grows in the Taurus mountains. And this article claims that it is found in Dörtyol in the eastern Turkey: 'The Flora of Dörtyol and Erzin Districts of Hatay Province in Turkey' (http://journals.tubitak.gov.tr/botany/issues/bot-98-22-2/bot-22-2-7-96044.pdf)

Poul

[Oron Peri]

Poul
In 2007 Karin Persson published her 'Nomenclatural synopsis of the genus Colchicum (Colchicaceae), with some new species and combinations', where she gives the distribution of these two species. I think Kew accepted it, based on this synopsis.

[johnralphcarpenter]

Poul
In 2007 Karin Persson published her 'Nomenclatural synopsis of the genus Colchicum (Colchicaceae), with some new species and combinations', where she gives the distribution of these two species. I think Kew accepted it, based on this synopsis.

Where was it published? Is it available online?

[Maggi Young]

Various of Karin Persson's Colchicum papers available online - at a cost :

http://www.ingentaconnect.com/search?form_name=advanced&ie=%E0%A5%B0&value1=Colchicum&option1=tka&operator2=AND&option2=author&value2=Persson+Karin&operator3=AND&value3=&option3=journalbooktitle&operator4=AND&option4=volume&value4=&operator5=AND&option5=issue&value5=&subscribed=false&sortField=default&sortDescending=true&pageSize=10

[krisderaeymaeker]

Poul,
Your Colchicum is C. deicasnei which distribution is from S. Turkey down to North Israel.
C. trodii as it appear is endemic to the Toodos Mt. in Cyprus.

Hi Poul , I agree with Oron .
Here some pictures from C. troodi in flower in Cyprus ....We did see them in flower in Cyprus in november ...

[krisderaeymaeker]

Some more Colchicum troodi .......

[krisderaeymaeker]

Colchicum troodi with star shaped flowers .

[pehe]

Some more Colchicum troodi .......

Thank you all for your reply.
Most of my plants looks exactly like this one, and  some of them are almost pure white, so the pictures do not convince me. To me trodii and decasnei look identical, can you tell me what the difference is? I will try and get hold of Karins article. Maybe that will give the answer.

Poul

[krisderaeymaeker]

Hi Poul ,

My remark was mainly based on the geografical situation ....Plants from Turkey are named as decaisnei and troodi is confined to Cyprus ....But nevertheless ...I grow both troodi from Cyprus and decaisnei from Turkey and as I remember wel there is a difference in appearrance ....This difference is mainly visible in the leafs .Maybe I have to take pictures from both when they have both leafs .

Anyhow ,this is what I found in a study .... Don't know if it is valuable to you or anyone ...


C. decaisnei is similar to C. troodii Steven and so differences between the 2 species are shown in Table 11.

Table 11. Comparison of morphological characteristics between C. decaisnei and C. troodii.

C. decaisnei :
Corm tunics  :membranous or subcoriaceous
Leaves :suberect to arcuate-procumbent linear-lanceolate to lanceolate or narrowly ovate channelled at least in lower
part margins slightly undulate
Perianth segments : linear to oblanceolate
Filament channels : puberulous at least on margins
Filaments :  4-12 (-14) mm
Capsule : oblong to elliptic acute or acuminate only ellipsoid rostrate

C. troodii
Corm tunics :papery
Leaves : erecto-patent ligulate flat hardly twisted
Perianth segments : narrowly oblong-lanceolate
Filament channels : glabrous
Filaments : 15-20 mm
Capsule : only ellipsoid rostrate

Cheers ,

Kris

[pehe]

Hi Kris,

Thank you very much. Your answer is most helpful!
I have not received Karin Perssons article yet but I have found some other information about troodi and decaisnei.
Earlier they have been regarded as one species, but some years ago the forms from Turkey has been renamed to decaisnei only leaving the plants from Cyprus as troodi. That explains why Flora of Turkey describes troodi as growing in Turkey.

Here are some pics of my different Colchicum decaisnei plants and their corms

Poul