Scottish Rock Garden Club Forum
Plant Identification => Plant Identification Questions and Answers => Topic started by: Catwheazle on April 15, 2019, 09:13:31 PM
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can someone tell me th difference between E dens canis and sibiricum?
Are there a link to a key
Thx
Bernd
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Probably Ian Young will be able to give you a more detailed reply to this Bernd but one distinguishing issue is that in the main the pollen colour in dens-canis is mainly yellow and in sibiricum is mainly dark-violet.
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There are precise descriptions in the book by Chris Clennett - and there is an option to download that for free here : http://arubabooks.com/get/ebook.php?id=4PMkmwEACAAJ (http://arubabooks.com/get/ebook.php?id=4PMkmwEACAAJ)
See also Ian Young's free e-book on the Erythroniums in Cultivation ....
http://files.srgc.net/general/ERYTHRONIUMS-IN-CULTIVATION%20-2016-IanYoung.pdf (http://files.srgc.net/general/ERYTHRONIUMS-IN-CULTIVATION%20-2016-IanYoung.pdf)
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Probably Ian Young will be able to give you a more detailed reply to this Bernd but one distinguishing issue is that in the main the pollen colour in dens-canis is mainly yellow and in sibiricum is mainly dark-violet.
Other way round, David, dens-canis pollen is violet. Senior moment?!
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Clennett gives sibiricum anthers as dark purple - but most are yellow in the ones I've seen.
dens-canis pollen can be brown but is mostly, bluish lilac.
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The majority of Erythronium dens-canis that I have seen in cultivation have dark violet pollen, some at stages may give the appearance of a white bloom sitting on top of the dark pollen similarly E. sibericum mostly appears in cultivation as the yellow pollen forms.
Having said that there are dark pollen forms of E. sibericum and yellow/brown pollen in some forms of dens-canis but as yet these are not commonly seen in cultivation.
To answer Bernd the colour of the pollen is the first thing to check, there are a number of other subtle differences in the filaments,, style, leaf, etc but while I can quickly see the differences between them it is difficult to write it down in words that is why it is so difficult to write a precise key. Have a look at the detailed pictures in my book and you will pick out some of these features.
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Other way round, David, dens-canis pollen is violet. Senior moment?!
Very 'senior', happens a lot! :D
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There are precise descriptions in the book by Chris Clennett - and there is an option to download that for free here : http://arubabooks.com/get/ebook.php?id=4PMkmwEACAAJ (http://arubabooks.com/get/ebook.php?id=4PMkmwEACAAJ)
Possibly they won't accept UK credit cards (you need to set up an account to proceed) or on my present form I got the card numbers wrong? I did check it a couple of times though.
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That's odd - I just saw that one needed to create a "free account" - and I (foolishly!) assumed it meant just that - so I had no idea credit card details would be required. (sigh!)
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You can see the Erythronium sibiricum chapter from my book here:-
http://www.srgc.org.uk/logs/logdir/2015Nov251448456813BULB_LOG_4715.pdf (http://www.srgc.org.uk/logs/logdir/2015Nov251448456813BULB_LOG_4715.pdf)
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wow, great :-) Thanks for the information!
@ Ian: You've made me really curious about erythronium :-) Great info .... and ... I got while reading an interesting information. I have two different clones of sibiricum. one of them is noticeable in some winters - as this year - because the flowers have only very short stems. That's not the case with the other clone. It's not every spring either way. Your note with the rapid, or slow warming I can confirm!
Thank you all
Bernd