I suppose it may be useful to read some Mathew, The Iris, into the record for educational reasons, claiming fair use, as it were.
Speaking of I. lacustris Nuttall: "Apart from being generally smaller [than I. cristata] in all its parts, I. lacustris has a much shorter perianth tube, usually about 2cm or less.[. . ..] In leaf width there is perhaps also a generalization to be made; those of the non-flowering shoots of I.cristata are 1-3cm wide and thoser of I. lacustris usually less than 1cm."
The BIS species Iris book says much the same thing. Both mention a white blotch on the falls, neither mention a dark purple blotch or halo arount the "crest"
AMW
-----Original Message-----
From: Chuck Chapman <irischapman@aim.com>
To: iris-species@yahoogroups.com
Sent: Mon, Jun 27, 2011 9:44 am
Subject: Re: [iris-species] ID please - Iris lacustris
Height sounds right. Flowers are often only about 3/4" across.
It isn't fussy about temperature. It is very fussy re sun and moisture.
What are moisture and sun conditions it survives in?
Lacustris seems to prefer dappled sun or shade and likes to be well drained and kept moist. Likes high humidity.
Grows in gravel/sand and in soil found at edge of shores next to forest.
Chuck Chapman
-----Original Message-----
From: Yuri Pirogov <j*@aha.ru>
To: i*@yahoogroups.com
Sent: Sun, Jun 26, 2011 1:00 am
Subject: Re: [iris-species] ID please - Iris lacustris
ï
Thank all responding.
It's heigt is about 3 inches.
This clone is widely distributed between gardeners in Almaty, Kazakhstan under name Iris lacustris.
So now I'm sure it is true name.
Almaty is quite hot in summer and cold in winter so this clone is not so demanding.
Yuri
What is it's height?
Could be lacustris, but height is the best distinguishing feature of the two.
What is the condition you are growing it in? Cristata is relatively easy to grow.
Lacustris can be very demanding of growing conditions.
Chuck Chapman
