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Plagiobothrys
See list of 2 species in this genusPlagiobothrys scouleri var. scouleri was reported from ME by Kartesz (1999), but specimens are unknown.
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1a. Attachment scar of mericarp and often basal portion of inner keel positioned within a shallow trough created by folds of the pericarp; outer suface of mericarp with cross-ribs that lack teeth or prickles; calyx 2–4 mm long; corolla 1.5–3.5 mm wide in life
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1b. Attachment scar of mericarp not situated within a trough; outer surface of mericarp with cross-ribs that are ± toothed (rarely the teeth well-developed and nearly forming prickles); calyx 4–6 mm long; corolla 1–2 mm wide in life
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Each photo represents one species in this genus.