Iris lacustris Nutt.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Iridaceae
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Scientific Name
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Description
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Species Description - Like a smaller form of no. 2 [Iris cristata Aiton]; lvs broadly linear, curved- arching, 4–6 cm at anthesis, later to 18 cm × 5–10 mm; spathe-valves closely sheathing each other, the upper and lower equally spaced; perianth-tube dull yellow, 1–2 cm, dilated upwards, not or scarcely exceeding the spathe-valves and shorter than the sep and pet; fls 5–6 cm wide, the pet emarginate; seeds dark brown, arillate; 2n=42. Gravelly shores and cliffs in calcareous soil around lakes Michigan and Huron; now rare. May.
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Common Names
dwarf lake-iris