E-Flora BC: Electronic Atlas of the Flora of British Columbia

Sisyrinchium idahoense E.P. Bicknell var. idahoense
Idaho blue-eyed-grass (Idaho blue-eyed grass)
Iridaceae (Iris family)

Introduction to Vascular Plants

© Frank Lomer  Email the photographer   (Photo ID #28565)

E-Flora BC Static Map
Distribution of Sisyrinchium idahoense var. idahoense
Click here to view the full interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Species Information

Click on the image below to view an expanded illustration for this species.



General:
Perennial tufted herb from a fibrous root; stems simple or sometimes branched, flat, winged, 10-42 cm tall.
Leaves:
Mostly basal, the blades several, linear, 10-30 cm long, (0.5) 2-2.5 (4.5) mm wide, sheathing, the margins entire to fine-toothed, the tips long-pointed; stem leaves 1 or few at the nodes, similar to basal.
Flowers:
Inflorescence of 2 to 7 showy, erect to nodding flowers on slender, smooth to slightly glandular, 2- to 2.5-cm long stalks; flowers pale blue to purple or deep violet-purple, of 6 distinct, narrowly elliptic to oblanceolate segments, these similar, 1-1.5 (2) cm long, rounded to blunt, abruptly bristle-tipped, the tubes slightly inflated below, 1-2 mm long; bracts 2, unequal, the outer one usually exceeding the flowers; filaments fused about 1/3 their length; anthers (1) 1.3-2 (2.5) mm long, yellow.
Fruits:
Capsules, egg-shaped to globe-shaped, 4-5.5 (6.5) mm long; seeds numerous, globe-shaped to angled, black, (1) 1.3-1.8 mm wide.
Notes:
Two varieties occur in BC while a third, var. segetum, known from the nearby San Juan Islands in NW WA may be found in BC in the future.

1. Stems usually averaging at least 2 mm wide; perianth segments usually less than 1.5 cm long................... var. idahoense

1. Stems usually averaging less than 1.5 mm wide; perianth segments usually more than 1.5 cm long.

2. Outer bracts at least twice as long as inner bracts; perianth usually more than 1.8 cm long; stems less than 1.5 mm wide..................... var. macounii (Bickn.) Henderson

2. Outer bracts usually less than twice as long as the inner bracts; perianth 1.5-1.8 cm long; stems usually less than 1.2 mm wide...................... var. segetum (Bickn.) Henderson

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist grassy meadows in the lowland, steppe and montane zones; var. idahoense - rare in S BC; var. macounii - rare on S Vancouver Island and the Gulf Islands; var. idahoense S to WY, ID and N CA; var. macounii - S to WA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Sisyrinchium idahoense var. idahoense

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Minimum

Average

Maximum

Elevation (metres) 1133 1133 1133
Slope Gradient (%) 0 0 0
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
5 5 5
Modal Nutrient Regime
Class
B
Number of field plots
 species was recorded in:
1
Modal BEC Zone Class
MS
All BEC Zones (# of stations/zone) species was recorded in: MS(1)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Sisyrinchium birameum Piper

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References