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. 2006 May;97(5):723–729. doi: 10.1093/aob/mcl036

Fig. 1.

Fig. 1.

(A–I) Bright field (BF) and polarized light (PL) views of clearings of Prunus serotina young leaves and bud scales and crystals. (A) Young leaf 735 μm long with a small pair of stipules, no crystals are evident; BF. (B) Young leaf (bottom) about 1 mm long with one similarly long stipule (top); BF. (C) Same as (B) but crystals are visible; PL. (D) Young leaf about 2 mm long with longer stipule (top); BF. (E) Same as (D) but with further development of crystals; PL. (F) Close up of large druses in stipule; BF. (G) Older stipule 1.2 cm long displays some reduction in druses; PL. (H) Old stipule displays sparsely distributed druses; PL. (I) Young leaf 6-mm long displays distal crystals; PL. (J) Margin of young leaf 3.3 cm long; druses occur in leaf teeth and adjacent veins; PL. Scale bars: A = 250 μm; B–E and I = 0.5 mm; F = 40 μm; G = 250 mm; H = 0.5 mm; J = 1.0 mm.