SPEC: Rhode Island

From: "Ian E. & Shirley Efford" <avocet.intl@sympatico.ca>

Celia asked about the wild species known from Rhode Island.  There are
three:-

Iris prismatica Pursh ex Ker-Gawl.   slender blue iris         
Iris pseudacorus L.                  pale yellow iris           
Iris versicolor L.                   harlequin blueflag        
                    
The blue one might be either prismatica or vericolor, depending on your
definition of blue and the actual local genetic stock.  I do not class
versicolor as really blue, normally, but it can tend that
way.              
I should note that many enquiries about the native irises in North
America can be answered by looking on one of two websites.  Rodney's on
native irises or the USDA on PLANTS on the US.  They can be found at:-
                                                                  
http://molly.hsc.unt.edu/~rbarton/Iris/NANI.html

http://trident.ftc.nrcs.usda.gov/plants/plntmenu.html

Ian, in Ottawa, where he is swamped with work but still keeping up with
reading the list!

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