Plants 15–60(–75) cm. high.. Rhizome horizontal, short, moniliform; roots fairly thin, shortly branched, bearing tubers 2–3 cm. long, mainly on the lateral branches.. Leaves rosulate, glabrous, lanceolate, broadest at the middle, narrowed and clasping below, occasionally petiolate, 10–75 long, (1–)2–4(–6) cm. wide, with distinct midrib, the margins glabrous or minutely scabrid, often undulate.. Peduncle terete, glabrous, leafless, occasionally with a single sterile bract below the inflorescence, 10–50 cm. long.. Inflorescence paniculate; branches usually with short internodes (except for the lowermost ones), more elongated in shade-forms; rhachis glabrous to papillate; floral bracts 5–15(–30) mm. long, 1–3 mm. wide, larger and longer in shade forms.. Pedicels articulated near or above the middle, 3–10 mm. long, slightly papillate, 2–4-nate at the lower nodes.. Perianth with reflexed tepals, greenish, 5–7 mm. long, 1.5–2 mm. wide, 3(–5)-veined.. Stamens as long as the perianth; filaments fusiform, scabrid, ± 3 mm. long; anthers 2–3 mm. long.. Style straight, as long as the stamens.. Capsule deeply triquetrous, emarginate, 3–6 mm. long, 4–7 mm. wide, smooth.. Seeds disc-to saucer-shaped, ± 2.5 mm. in diameter.
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A lax branched infloresconce nearly 2 ft. high
Flowers blue-green with white filaments