Sisyrinchium septentrionale |
Sisyrinchium pallidum |
|
---|---|---|
northern blue-eyed-grass |
pale blue-eyed grass |
|
Habit | Herbs, perennial, cespitose, green to pale olive when dry, to 4.3 dm, not glaucous; rhizomes scarcely discernable. | Herbs, perennial, cespitose, green to olive when dry, to 3 dm, not glaucous; rhizomes scarcely discernable. Stems simple, 1–2 mm wide, glabrous, margins entire, similar in color and texture to stem body. |
Stems | simple, 0.8–2 mm wide, glabrous, margins usually entire to denticulate apically, similar in color and texture to stem body. |
|
Leaf | blades glabrous, bases not persistent in fibrous tufts. |
blades glabrous, bases not persistent in fibrous tufts. |
Inflorescences | borne singly; spathes usually green, glabrous, keels entire to slightly denticulate; outer 20–63 mm, 17–42 mm longer than inner, tapering evenly towards apex, basally connate 1.5–2.5 mm; inner with keel evenly curved, hyaline margins 0.1–0.3 mm wide, apex acute to acuminate, ending 0.4–2.3 mm proximal to green apex. |
borne singly; spathes green, glabrous, keels entire; outer 28–38 mm, 7–26 mm longer than inner, basally connate 2.6–4.3 mm, often very slightly constricted proximal to apex; inner with keels evenly curved, hyaline margins 0.1–0.5 mm wide, apex usually acute, ending 0–1.5 mm proximal to green apex. |
Flowers | tepals pale blue to light bluish violet, rarely white, bases yellow; outer 8–9.1 mm, apex usually rounded, aristate; filaments connate ± entirely, stipitate-glandular basally; ovary similar in color to foliage. |
tepals pale blue, bases yellow; outer tepals 7.6–10 mm, apex slightly emarginate or rounded, aristate; filaments connate ± entirely, stipitate-glandular basally; ovary similar in color to foliage. |
Capsules | beige to light brown, ± globose, 3–5 mm; pedicel spreading to erect. |
beige to dark brown, globose, 3–5 mm; pedicel ascending. |
Seeds | globose to obconic, lacking obvious depression, 0.5–1.2 mm, rugulose. |
globose to obconic, lacking obvious depression, 0.8–1.2 mm, granular or somewhat rugulose. |
2n | = 32. |
= 64. |
Sisyrinchium septentrionale |
Sisyrinchium pallidum |
|
Phenology | Flowering early–mid summer. | Flowering mid summer. |
Habitat | Mesic to dry meadows, stream banks, often in gravelly soil | Poorly drained, montane meadows |
Elevation | 500–1600 m (1600–5200 ft) | 2600–3000 m (8500–9800 ft) |
Distribution |
WA; AB; BC; NT; SK
|
CO; WY
|
Discussion | Sisyrinchium septentrionale is widespread but apparently not common in western Canada. In central Canada it intergrades with S. mucronatum, to which it appears closely related (see discussion, p. 367). It is confused also with S. montanum but can be distinguished by its very slender, very long outer spathe and nongibbous inner spathe. Fresh material will show lighter blue flowers and outer tepals with rounded apices. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 371. | FNA vol. 26, p. 367. |
Parent taxa | Iridaceae > Sisyrinchium | Iridaceae > Sisyrinchium |
Sibling taxa | ||
Name authority | E. P. Bicknell: Bull. Torrey Bot. Club 26: 452. (1899) | Cholewa & Douglass M. Henderson: Brittonia 36: 361, fig. 7E–G. (1984) |
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