Iris sintenisii

James L. Jones
Tue, 29 Jan 2013 16:38:25 PST
There's been an ongoing discussion here in the Boston area as to which is the true I. sintenisii: a totally deciduous one (as below) or a quite thoroughly evergreen one that weathers the cold well.  I have them both.  The flowers are at least similar, though I hadn't been moved in the past to compare them that closely.  The impression of our group is that this is a wide-spread conundrum.
Jim (the other Jim) Jones
Lexington, MA

-----Original Message-----
From: iain <>
To: pbs <>
Sent: Tue, Jan 29, 2013 2:36 pm
Subject: [pbs] Iris sintenisii

I can confirm Jim's statement on this taxon in that its winter state is complete 
dormancy of all foliage, it just withers and beds down for the winter. 
The effect of having living tissue exposed during winter would result in severe 
desiccation. It also seems to be the case with many Iris, as with Lilium that 
wild seed origin is often important to ensure survival. 
There are a few taxa here from both genera which form clines - north to south, 
low to high altitude, east to west with variable degrees of success and failure. 
Our main seed provenance of Lilium nepalense appears not to have read the extant 
literature as to frost hardiness having several times dealt with -20 C to - 25 
C. Just try whatever you feel might work if it seems interesting, all you loose 
is your time and the price of the seed but now and again there is the odd bonus.


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