Re: Iris sp. identification

Hi Folks,
    I was able to track down the person who posted these photos; he's a 
faculty member in plant biology at Cornell, but doesn't know much about 
irises.  I learned that the photos are of a cultivated iris, growing 
near a house he rented but doesn't live in any more.  His recollection 
is that the photos were taken in early April.  I asked him for a bit 
more information, since I really doubt the April date, but this may be 
all we get.  He's not likely to go collect seed pods for us. 
    Ken Walkup

gndavis@peoplepc.com wrote:
> Kenneth
> You have keen eyes. Standards are present hanging down on the first 
> picture. 
> I believe all subsequent pictures are variations on the same blooms shown 
> in 
> the first picture. First, the flower with broken standards in the first 
> picture looks like our typical Versicolor. The second flower with curved 
> standards looks to be a non typical flower with a double set of styles 
> since 
> two sets of tufted styles are present on the same bloom at two positions. 
> This is confusing.
>
> However, there are additional traits which favor a versicolor ID. First, 
> falls in the pictures are elongate with the typical versicolor "dogs 
> tongue" 
> shape. In setosa, the fall tends to be very slender on the inner haft with 
> abruptly flaring almost circular outer fall. Second, the signal area 
> pictured is very high contrast with distinct pattern and signal edge. In 
> setosa, the signal area is often larger and more diffuse than versicolor 
> with less contrast. In many setosas the signal area appears to merge onto 
> the fall, oft times with continuation of the vein pattern, more continuity 
> than versicolor. Further, spent blooms on Versicolor corkscrew quite 
> distinctly as seen in the picture. Finally, ageing / stressed versicolor 
> falls tend to roll up lengthwise as seen in the pictures. Setosa, as I 
> recall, tends to tuck the fall under the bloom.
>
> One additional comment I would make is that setosas need either re-seeding 
> or transplanting here as they do not persist well left in place. Their 
> ability to colonize an area is much weaker than versicolor, particularly in 
> competition with other plants.
> For what its worth.
>
> irisman646 - greg.davis
>
>
> ----- Original Message ----- 
> From: "Kenneth Walker" <kenww@astound.net>
> To: <iris-species@yahoogroups.com>
> Sent: Saturday, November 15, 2008 11:41 AM
> Subject: Re: [iris-species] Iris sp. identification
>
>
>   
>> Ken,
>>
>> You make a good point about a "wild" iris not necessarily being native.
>>
>> However, despite the lack of standards on most of the flowers, there are
>> standards in some of the pictures, indicating that the plants are not I.
>> setosa. The middle flower in the first photo shows one standard hanging
>> down, nearly falling off the flower. Photo 5 & 6 show a bloom with two
>> relatively large standards. In fact the standards seem a bit large for
>> I. versicolor, and are curving in instead of out. Something seems to be
>> eating standards. Some of the falls show munching along the edges.
>>
>> In photos 5 & 6, you can also see a perianth tube on both the foreground
>> bloom and a spent bloom in the background. Aren't the tubes rather large
>> for I. versicolor? Or is it within the species' variation?
>>
>> Ken
>>
>> Ken Walkup wrote:
>>     
>>> Yuri & all,
>>>     This location is within 5 miles of my home.  Greg is right that
>>> versicolor is the only naturally occurring iris which this could
>>> possibly be, but I'm not totally sure.  It looks like it could be a
>>> setosa.  The person who posted this has a Cornell University email
>>> address; so do I and I'll try to ID the sender & get more info.  And,
>>> possibly recruit a new SIGNA member.
>>>     A few years back, I was walking my dog within a half mile of home,
>>> and saw a siberian iris seedling growing out of a roadside drainage
>>> ditch.  Just because it wasn't "planted" does not mean it's native.
>>>     Ken
>>>
>>>
>>>       
>> ------------------------------------
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>>     
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>   

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