Sisyrinchium septentrionale
Sisyrinchium rosulatum
northern blue-eyed-grass
annual blue-eyed grass
simple, 0.8–2 mm wide, glabrous, margins usually entire to denticulate apically, similar in color and texture to stem body.
branched or rarely simple, with 1–2(–3) nodes, 0.7–2 mm wide, glabrous, margins usually entire, similar in color and texture to stem body;
first internode 2–10 cm, usually shorter than leaves;
distalmost node with 1–2 branches.
blades glabrous, bases not persistent in fibrous tufts.
blades glabrous, bases not persistent in fibrous tufts.
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, obviously wider than supporting branch, glabrous, keels usually entire;
outer 13–32.2 mm, 2–8.2 mm longer than inner, tapering evenly towards apex or occasionally slightly constricted proximal to apex, margins basally connate 2.3–6.7 mm;
inner with keel evenly curved to straight, hyaline margins 0.2–0.3 mm wide, apex acute, occasionally erose, ending 0.3–4.6 mm proximal to green apex.
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.
perianth flaring distally, campanulate basally;
tepals maroon or pink to lavender-rose with purple stripes, or yellow with rosy purple bases;
outer tepals 5–11 mm, apex acute, rarely aristate;
filaments connate basally, occasionally to 1/2 their length, basally inflated and stipitate-glandular 0.5–0.8 mm;
ovary similar in color to foliage.
beige to light brown, ± globose, 3–5 mm;
pedicel spreading to erect.
tan with purplish sutures and sometimes apex, ± globose, 2.1–4.2 mm;
pedicel spreading to recurved.
globose to obconic, lacking obvious depression, 0.5–1.2 mm, rugulose.
± globose, sometimes with slight depression, 0.5–1 mm, rugulose.
= 32.
= 32.
Sisyrinchium septentrionale
Sisyrinchium rosulatum
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.)
Sisyrinchium rosulatum is apparently weedy throughout much of its range.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
BC
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
LA Plants
