Sisyrinchium angustifolium |
Sisyrinchium miamiense |
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Bermudienne à feuilles étroites, blue-eyed grass, narrow-leaf blue-eyed-grass, stout blue-eyed grass |
Miami blue-eyed grass |
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Habit | Herbs, perennial, cespitose, dark olive green to bronze or blackish when dry, to 4.5 dm, not glaucous. | Herbs, perennial, brownish or bronze-olive when dry, to 4 dm, not glaucous; rhizomes slightly elongated. |
Stems | branched, with 1–2 nodes, 2.3–5 mm wide, glabrous, margins often minutely denticulate especially basally, similar in color and texture to stem body; first internode 10–30 cm, usually longer than leaves; distalmost node with 1–3 branches. |
branched, with 1 or 2 nodes, 1.3–2(–2.5) mm wide, glabrous, margins usually entire, similar in color and texture to stem body; first internode 9–30 cm, equaling or shorter than leaves; distalmost node with 1–3 branches. |
Leaf | blades glabrous, bases not persistent in fibrous tufts. |
blades glabrous, bases not persistent in fibrous tufts. |
Inflorescences | borne singly; spathes usually green, obviously wider than supporting branch, glabrous, keels denticulate to entire; outer 18–38 mm, 2–9.5 mm longer than inner, usually tapering evenly towards apex, margins basally connate 4–6 mm; inner with keel evenly curved or straight, hyaline margins 0.1–0.3 mm wide, apex acuminate to acute, ending 0.2–0.7 mm proximal to green apex. |
borne singly; spathes green to occasionally purplish, obviously wider than supporting branch, glabrous, keels usually entire; outer 12.5–23 mm, 2.3 mm shorter to 3.7 mm longer than inner, tapering evenly towards apex, margins basally connate 3.9–6.5 mm; inner with keel straight to evenly curved, hyaline margins 0.1–0.3 mm wide, apex acute or obtuse, ending at or to 1 mm proximal to aristate green apex. |
Flowers | tepals pale blue to violet, occasionally white, bases yellow; outer tepals 7.7–12.5 mm, apex rounded or emarginate, aristate; filaments connate ± entirely, stipitate-glandular basally; ovary similar in color to foliage. |
tepals pale blue to deep bluish violet, bases yellow; outer tepals 8.3–12.8 mm, apex rounded to emarginate or truncate, aristate; filaments connate ± entirely, stipitate-glandular basally or glabrous; ovary similar in color to foliage. |
Capsules | dark brown or black, sometimes with purplish tinge, ± globose, 4–7 mm; pedicel spreading or ascending. |
dark brown or nearly black, ± globose to obovoid, 3.7–4.5 mm; pedicel ascending to spreading. |
Seeds | globose to obconic, lacking obvious depression, 0.5–1.2 mm, rugulose. |
globose to obconic, lacking obvious depression, 1–1.2 mm, rugulose. |
2n | = 96. |
= 32. |
Sisyrinchium angustifolium |
Sisyrinchium miamiense |
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Phenology | Flowering spring–early summer. | Flowering late winter–summer. |
Habitat | Moist meadows, stream banks, swamp edges, sandy meadows, moist open woods | Roadside ditches, hammocks, open woods |
Elevation | 0–800 m (0–2600 ft) | 0–50 m (0–200 ft) |
Distribution |
AL; AR; CT; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; NE; NH; NJ; NY; OH; OK; PA; RI; SC; TN; TX; VA; VT; WI; WV; LB; NS; ON; QC
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AL; FL; GA; MS |
Discussion | Sisyrinchium membranaceum E. P. Bicknell probably belongs here; Bicknell indicated that its relationship was “with S. graminoides” and his description falls within that of S. angustifolium, except for slightly shorter spathe bracts. In previous floras, Sisyrinchium angustifolium often has been confused with S. montanum, especially when S. graminoides was segregated. Branching seems to be the primary point of confusion. The original descriptions of S. angustifolium and S. graminoides clearly indicated branching while that of S. montanum indicates it to be single-stemmed. There is some slight similarity between S. montanum var. crebrum and S. angustifolium with respect to spathe connation and dry color, and chromosome counts indicate that both have 2n = 96, but there is some indication that breeding barriers may exist (D. B. Ward 1959). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 26, p. 361. | FNA vol. 26, p. 364. |
Parent taxa | Iridaceae > Sisyrinchium | Iridaceae > Sisyrinchium |
Sibling taxa | ||
Synonyms | S. graminoides | S. flagellum, S. recurvatum |
Name authority | Miller: Gard. Dict. ed. 8, Sisyrinchium no. 2. (1768) | E. P. Bicknell: Bull. Torrey Bot. Club 26: 226. (1899) |
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