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Perennial, rhizomatous herb, 0.4-0.6 m high. Leaves linear, apex acuminate; basal ± leathery, spreading, margins translucent, white to brown; cauline curved, keeled, with hyaline margins. Spathes rusty brown, becoming torn with age. Bracts ovate, with dark triangle at base, midvein raised, torn, apex acute, usually lacerated. Inflorescence usually terminal or lateral, binate rhipidia, with blue to deep purple flowers; outer tepals ± equal to inner ones. Ovary with trilobed stigma; lobes fan-shaped, finely crested. Flowering time Sept.-Mar. Capsule oblong.
Robust, perennial herb, up to 0.93 m high. Bracts with a raised midvein, dark rusty-brown. Scape transversely elliptic and slightly ancipitous. Margins of upper cauline leaves narrowly hyaline-margined. Flowers blue.
Rhizomatous perennial to 80 cm, stem elliptic, usually few-branched and with sessile lateral flower clusters. Leaves sword-shaped. Flowers blue, spathes scarious, rust-brown, lacerate with age. Capsules ovoid.
