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Author Topic: Crocus November 2012  (Read 33871 times)

bulborum

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Re: Crocus November 2012
« Reply #105 on: November 08, 2012, 07:10:05 PM »
Does someone knows if the Crocus cartwrightianus albus
in the Dutch trade is in real Crocus hadriaticus
and if this is true
does there a real white form exist from Crocus cartwrightianus

Roland
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David Nicholson

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Re: Crocus November 2012
« Reply #106 on: November 08, 2012, 08:35:54 PM »
My Crocus season beginning to move a bit. Sorry for the quality of the pics, have moved my photographing position in the greenhouse and am getting more light so need to darken my backing plate to stop it showing through.

Crocus goulimyi 'Mani White' a kind gift from Gerry in 2011.

Crocus goulimyi from seed sown August 2007.

Crocus longiflorus from seed Tony Goode kindly sent to me and sown August 2007 and, I think, flowering for the first time.
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David Nicholson
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Gerry Webster

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Re: Crocus November 2012
« Reply #107 on: November 08, 2012, 08:47:50 PM »
Quote from: bulborum on November 08, 2012, 07:10:05 PM
Does someone knows if the Crocus cartwrightianus albus
in the Dutch trade is in real Crocus hadriaticus
and if this is true
does there a real white form exist from Crocus cartwrightianus

Roland
Roland - From Brian Mathew: C. cartwrightianus albus is, in fact, C. hadriaticus. Albino forms of C. cartwrightianus are said to be common but the only one I have seen has a purple eye - I posted this on the forum in earlier  years & Janis posted a similar plant.
« Last Edit: November 08, 2012, 08:50:48 PM by Gerry Webster »
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ArnoldT

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Re: Crocus November 2012
« Reply #108 on: November 09, 2012, 03:57:10 AM »
I have this as Crocus cartwrightianus albus

If not what is it?
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Arnold Trachtenberg
Leonia, New Jersey

Janis Ruksans

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Re: Crocus November 2012
« Reply #109 on: November 09, 2012, 05:30:42 AM »
Quote from: ArnoldT on November 09, 2012, 03:57:10 AM
I have this as Crocus cartwrightianus albus

If not what is it?
It looks as cartwrightianus (by lenghth of style branches) but I'm afraid that plant is virus infected.
Janis
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bulborum

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Re: Crocus November 2012
« Reply #110 on: November 09, 2012, 08:02:33 AM »
Quote from: Janis Ruksans on November 09, 2012, 05:30:42 AM
It looks as cartwrightianus (by lenghth of style branches) but I'm afraid that plant is virus infected.
Janis

before you throw it away (what most people do)
try to let it produce seeds and seed it again

Roland
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David Nicholson

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Re: Crocus November 2012
« Reply #111 on: November 09, 2012, 09:36:24 AM »
I would be interested to hear the evidence of virusing.
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David Nicholson
in Devon, UK  Zone 9b
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Gerry Webster

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Re: Crocus November 2012
« Reply #112 on: November 09, 2012, 09:56:47 AM »
Quote from: Janis Ruksans on November 09, 2012, 05:30:42 AM
It looks as cartwrightianus (by lenghth of style branches) .........
Janis

The style appears to be divided well above the throat.  Following Brian Mathew, this  suggests C. hadriaticus.
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ArnoldT

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Re: Crocus November 2012
« Reply #113 on: November 09, 2012, 11:23:13 AM »
David:

Me too, leaves look OK.
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Arnold Trachtenberg
Leonia, New Jersey

Janis Ruksans

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Re: Crocus November 2012
« Reply #114 on: November 09, 2012, 06:05:05 PM »
Quote from: Gerry Webster on November 09, 2012, 09:56:47 AM
The style appears to be divided well above the throat.  Following Brian Mathew, this  suggests C. hadriaticus.
All my hadriaticus has much shorter stigmatic branches, of course picture isn't the best for identifying and crocuses are so variable...
Janis
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Janis Ruksans

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Re: Crocus November 2012
« Reply #115 on: November 09, 2012, 06:06:56 PM »
Quote from: David Nicholson on November 09, 2012, 09:36:24 AM
I would be interested to hear the evidence of virusing.
Edge of petals is not straight but with "cut" edge + seems some discoloration on petals, too.
Janis
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tonyg

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Re: Crocus November 2012
« Reply #116 on: November 09, 2012, 07:04:49 PM »
Quote from: Thomas Huber on November 01, 2012, 03:43:06 PM
some close-ups:
Very late reply as we have been away.
Fabulous selection of forms.  Good to see that you are out and about recording crocus.  Thanks for sharing them here.
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Maggi Young

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Re: Crocus November 2012
« Reply #117 on: November 09, 2012, 07:09:13 PM »
Quote from: Gerry Webster on November 09, 2012, 09:56:47 AM
The style appears to be divided well above the throat.  Following Brian Mathew, this  suggests C. hadriaticus.
Yes, but the style branches are almost as long as the petals......
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Margaret Young in Aberdeen, North East Scotland Zone 7 -ish!

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Gerry Webster

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Re: Crocus November 2012
« Reply #118 on: November 09, 2012, 08:41:55 PM »
Quote from: Maggi Young on November 09, 2012, 07:09:13 PM
Yes, but the style branches are almost as long as the petals......

Yes, but which characteristic do you choose - length of style branches or point of division? Brian, not very helpfully, seems  indecisive here.
See a 'C. cartwrightianus albus' (= 'C. hadriaticus') here:

http://www.google.co.uk/imgres?imgurl=http://www.thompson-morgan.com/medias/sys_tandm/8806574850078.jpg&imgrefurl=http://www.thompson-morgan.com/flowers/flower-bulbs-and-tubers/crocus-bulbs/crocus-cartwrightianus-albus/p93108TM&usg=__pHU1viUrKGDKa7Sgu2G4Tx7LN3s=&h=1000&w=1000&sz=92&hl=en&start=19&zoom=1&tbnid=iPBHLfNthz26jM:&tbnh=149&tbnw=149&ei=t2edUL_tIsLH0QXqi4DoDA&prev=/images%3Fq%3Dcrocus%2Bhadriaticus%26hl%3Den%26client%3Dsafari%26sa%3DX%26rls%3Den%26tbm%3Disch&itbs=1

This looks just like Arnold's with a high point of division of the style.

I have yet to see a completely  albino form of C. cartwrightianus for comparison. Does anyone have one?
« Last Edit: November 09, 2012, 08:46:47 PM by Gerry Webster »
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Maggi Young

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Re: Crocus November 2012
« Reply #119 on: November 09, 2012, 08:45:30 PM »
Quote
Yes, but which characteristic do you choose - length of style branches or point of division? Brian, not very helpfully, seems  indecisive here.
My point exactly - to me the whole thing is as clear as mud....  ;)  :-\
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Margaret Young in Aberdeen, North East Scotland Zone 7 -ish!

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