Re: (unknown)

Hi filippo,
 
D. grandiflora usually has narrower leaves, but plants can vary.  Aside from the long lasting flowers, what I have invariably found are yellow/orange markings on the outer 3 tepals, continuing to the base, dark brown spots forming two rows at the base of the inner tepals and the style branches are suffused with blue/violet.  D. iridoides also has blue/violet style branches and yellow/orange streaks on the outer tepals, but the inner tepals are pure white; the flowers are smaller and only last a day.
 
But, my experience is limited, and there are probably variteties of thes species that differ from the above.

From: Filippo Dimatteo <fillidik@hotmail.com>
To: iris-species@yahoogroups.com
Sent: Wednesday, January 14, 2009 3:15:57 PM
Subject: RE: [iris-species] (unknown)

Hi David,
 
I agree with you in all you say.
Anyway the plants I grow are different.
 
D. grandiflora has big flowers, longlasting. The leaves are wide (up to 3 cm), twisted, up to 90 cm long and erect. Very showy plant when in clump.
D. iridioides is really smaller and not showy: small flowers, one day lasting. The leaves are up to 2 cm wide, perfectly plain and up to 40 cm long. The plant looks like a fan.
D. bicolor is similar to D. grandiflora  in size but the leaves are 1,5 cm wide and not twisted. The flowers are different.
D. robinsoniana is similar to D. grandiflora but it seems it can grow up to 200 cm tall (my plant is young).
 
I never seen the other 2 species.
Considering what you say, do you think my D. iridioides is not a true iridioides?
 
thank you for sharing infos.
fil.


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