, 1940). TB, Midseason bloom. Color Code_WW. Kleinsorge 1940; Cooley 1940.
| Awaiting original catalog description.
| (1946) Birchbark - Was blooming beautifully for Mrs. Waters in Cincinnati, but it has always behaved poorly for me in Columbus (Ohio); Birchbark, for a white to me is as good as any. It compares well with the newest. It has heavy substance (Mass.). [Unknown author, Varietal Comment. AIS Bulletin 101:72/April 1946]
| (1948) Birchbark is a sparkling white white with broadly rounded very flaring falls. Of medium height, it is a lovely companion to the blue of 'Shining Waters'. [A Critical Evaluation of Older Iris, A.I.S. Bulletin 110:54/July 1948]
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