TB 38″ M B1D
From Schreiner’s Iris Lover’s catalog for 1947: “Rich, absolute marine blue of great purity with a fine silken sheen. Early blooming, very broad foliage, nice flowers. An iris that will fit in the best of iris company for many years. One of the best blues at any price.”
Provenance: Photo images 1,2 from Presby Iris Gardens, c. 2010 where this iris was growing under the name Sierra Blue. It was corrected by Phil Edinger.