Note Author: Frank Lomer, Honorary Research Assistant, UBC Herbarium

Key (extracted from Michigan Flora online):

1. Flowers spreading to nodding, bell shaped; tepals separate; anthers bluish.....S. siberica

1. Flowers up facing, opening ± flat; tepals fused for ca. 3–4 mm at the base; anthers yellowish to white.

2. Flowers 1–2 (–3), pale blue (rarely white) throughout..........S. luciliae

2. Flowers mostly 3–8 in a raceme, deep blue with a distinctly paler, almost white, center.

.......S. forbesii

Sources:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. May 10, 2021. https://www.michiganflora.net/genus.aspx?id=Scilla.