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Messages 5584 - 5613 of 6382   Oldest  |  < Older  |  Newer >  |  Newest
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5584
Hi All A quick teaser so to speak I was recently reviewing my old Botany texts in anticipation of the first flowers of spring. A few plants stood out - Cow...
colinduke2003
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Feb 1, 2009
11:27 am
5585
... AIUI, the very large ones are often hybrids. Like this one: http://www.bioimages.org.uk/html/P2/P23961.php Note the metre rule for scale. (Identified by...
Malcolm Storey
bioimages2000
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Feb 3, 2009
8:48 pm
5586
... From memory: gorse. Many seeds that are not actively discharged are ant dispersed: Viola odorata and hirta (the subgenus with round non-explosive pods) are...
Malcolm Storey
bioimages2000
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Feb 3, 2009
9:06 pm
5587
Malcolm Primula seed appear to have elaiosomes see http://www.demonsineden.com/Site/Research_publications_files/Valverde%20&%20Silvertown%201995.pdf Terry...
Terry Smith
veteranoak
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Feb 4, 2009
7:57 am
5588
It can be one pointer if you're trying to single out hybrids in a population, but it's certainly not reliably diagnostic. D. affinis group and D. filix-mas can...
Martin Rand
rand_martin
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Feb 4, 2009
9:32 am
5589
Interesting - is there an easy way to tell a fern hybrid - I guess the spores aren't properly formed? Otherwise intermediate features? I struggle wiwth...
ryenats
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Feb 4, 2009
10:58 am
5590
Wow! Those are wonderful pictures, Malcolm - makes me itch to get my microscope out again :-) Gill ... are ant ... presents...
ryenats
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Feb 4, 2009
10:59 am
5591
Thanks Malcolm / Terry Very interetsing comments and link . Thanks for the suggestions OL Saxifrage in the spreads by rooting stems, to form extensive mats,...
colinduke2003
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Feb 4, 2009
12:04 pm
5592
... Interestingly my "hybrid" had perfectly normal spores... Malcolm...
Malcolm Storey
bioimages2000
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Feb 4, 2009
12:57 pm
5593
... It presents its seeds in open umbels just like the flowers, as tho offering them to be taken. I only said "suggesting". Maybe it's simply waiting to be ...
Malcolm Storey
bioimages2000
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Feb 4, 2009
1:32 pm
5594
Thanks malcolm :) I am presently suprised by the number of plants coexisting with Ants. I wonder if other than Ants these structures are used or have ...
colinduke2003
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Feb 4, 2009
5:01 pm
5595
Colin, I have seen ants carrying 'cup-shaped' seeds of a Veronica, and it seemed that the seeds were specially shaped to make them easily carried. I don't know...
Rodney Burton
rodney_m_burton
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Feb 4, 2009
5:09 pm
5596
Dear List, http://www.ecoflora.co.uk generates the list below for species dispersed by ants No mention of Chrysosplenium! Interesting the way many genera seems...
Malcolm Storey
bioimages2000
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Feb 4, 2009
5:17 pm
5597
... They seem to have a loose structure in the cup which I took to be an elaiosome? http://www.bioimages.org.uk/html/P2/P20499.php If you Google for:...
Malcolm Storey
bioimages2000
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Feb 4, 2009
5:22 pm
5598
Malcolm / Rodney The thread thickens and becomes more interesting !!! Malcolm thats an excellent list to start with. Rodney - you appear to be the first who...
colinduke2003
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Feb 4, 2009
6:05 pm
5599
Just looked in Hymenopterists Handbook (p71-2) "In Britain the greatest seed collector is Tetramorium caespitum. Workers carry individual seeds, especially...
Malcolm Storey
bioimages2000
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Feb 4, 2009
6:13 pm
5600
This is a great thread. For the record, I did check my books when this started and, remarkably, could not come up with a decent list of ant dispersed plants...
Mike Lush
stubbornlyin...
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Feb 4, 2009
7:42 pm
5601
Ah ha Mike Was hoping you would post on this topic, and abridge the Botany :) with some Ant Knowledge . 1 In terms of LIfe Cycle when would you be most likely...
colinduke2003
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Feb 4, 2009
8:24 pm
5602
Malcolm Several years ago, I found a neat pile of about 10 Viola seed on an upstairs window sill about 5 metres above ground level. I saw ants come in through...
Terry Smith
veteranoak
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Feb 4, 2009
9:09 pm
5603
Completely off the top of my head, which means it's probably wrong... ... I seem to remember reading that elaiosomes are chewed off, so are probably stored...
Mike Lush
stubbornlyin...
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Feb 4, 2009
9:44 pm
5604
Terry This relates to Birdsfoor Violet Extract.. The blooming period is mid- to late spring, and this plant may bloom during the fall. There may be a mild...
colinduke2003
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Feb 4, 2009
9:46 pm
5605
With D. x complexa, because of the apogamous nature of the D. affinis parent, you wouldn't expect an _absence_ of good spores; but you would expect an...
Martin Rand
rand_martin
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Feb 5, 2009
10:18 am
5606
There isn't one easy answer, and in some specific cases, there isn't any easy answer! As most hybrids have a proportion of abortive spores I always check this...
Martin Rand
rand_martin
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Feb 5, 2009
11:10 am
5607
... seeds ... very ... I've been wondering about the plants that grow on ant hills of Lasius flavus - in South Wales at least there are several species which...
georgetordoff40
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Feb 5, 2009
1:52 pm
5608
None of the Veronicas in George's posting are among the ones with cup-shaped seeds - my obs probably related to V hederifolia. Another plant which I think has...
Rodney Burton
rodney_m_burton
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Feb 5, 2009
7:12 pm
5609
Rodney / George Thank you for these very valuable comments and observations I think one objective way to produce a list is to actually propagete captured seeds...
colinduke2003
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Feb 5, 2009
8:42 pm
5610
Consider also the chemical and physical effects of ants. Formicine ants such as L. flavus undoubtedly change the soil chemistry due to formic acid production,...
Mike Lush
stubbornlyin...
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Feb 6, 2009
5:41 pm
5611
On chalk and limestone grassland ant-hills, from personal observation: Ranunculus bulbosus Rumex acetosella Viola hirta Cerastium arvense Cerastium fontanum ...
Martin Rand
rand_martin
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Feb 8, 2009
5:33 pm
5612
Wow !! Martin An impressive list ! More to Follow on the Ant and Plant Project- very observant you noted these on the ant hills themselves Best wishes Colin D...
colinduke2003
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Feb 8, 2009
8:15 pm
5613
That's quite a list, Martin. Unfortunately I can't see which are bold (maybe it's a browser thing?). Gill ... Hampshire. ... that...
ryenats
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Feb 9, 2009
2:42 pm
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