Wiry blue eyed grass (Sisyrinchium biforme)
Description
Herbs, perennial, cespitose, pale to olive green or occasionally bronze when dry, to 4.7 dm, not glaucous; rhizomes scarcely discernable. Stems simple or branched, with 1 node, 1.1�1.9 dm wide, glabrous, margins entire, usually same color and texture as stem body but occasionally drying lighter; internode 17.2�21.3 cm, equaling or shorter than leaves, with 2 branches. Leaf blades glabrous, bases not persistent in fibrous tufts. Inflorescences borne singly; spathes green, obviously wider than supporting branch, glabrous, keels entire; outer 13�19.6 mm on branched stems, 19.3�25.6 mm on simple stems, 1.2 mm longer to 2 mm shorter than inner on branched stems, 1.5�4.2 mm longer than inner on simple stems, tapering evenly towards apex, margins basally connate 3.9�6.1 mm; inner with keel evenly curved, hyaline margins 0.2�0.5 mm wide, apex acuminate to acute, ending 0.2�0.8 mm proximal to green apex on branched stems, sometimes lobed and exceeding green apex on simple stems. Flowers: tepals light blue, bases yellow; outer tepals 5�13 mm, apex rounded, short-aristate; filaments connate � entirely, stipitate-glandular basally; ovary similar in color to foliage. Capsules light to dark brown, � globose to � fusiform, 5�7 mm; pedicel usually erect. Seeds globose to obconic, occasionally with slight depression, 1�1.3 mm, rugulose. 2n = 96.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Magnoliophyta
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Class: Liliopsida
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Order: Asparagales
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Family: Iridaceae
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Genus: Sisyrinchium
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