Olsynium douglasii (A. Dietr.) E.P. Bicknell
satinflower (Douglas' blue-eyed-grass (var. douglasii); Douglas' grasswidow; purple blue-eyed-grass (var. inflatum))
Iridaceae (Iris family)
Introduction to Vascular Plants
satinflower (Douglas' blue-eyed-grass (var. douglasii); Douglas' grasswidow; purple blue-eyed-grass (var. inflatum))
Iridaceae (Iris family)
Introduction to Vascular Plants
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SUBTAXA PRESENT IN BC
Species Information
General:
Perennial tufted herb from a fibrous root; stems somewhat compressed, simple, 10-30 cm tall.
Leaves:
Basal leaves reduced, bractlike, blades lacking or sometimes 1-2 cm long; stem leaves 2 to 4, linear, on the lower 1/2 of stem, sheathing, the blades 10-30 cm long, 1.5-3 mm wide, the tips long-pointed.
Flowers:
Inflorescence of (1) 2 or 3 showy, nodding flowers on slender, flexuous, 3- to 4-cm long stalks; flowers reddish-purple, of 6 distinct oblanceolate to egg-shaped segments, these similar, 1.5-2.5 cm long, 5-nerved, abruptly pointed, the tubes slightly inflated below, 1-2 mm long; bracts 2, unequal, the upper one usually exceeding the flowers; filaments fused about 1/3 to 1/2 their length; anthers 3-7 mm long, yellow.
Fruits:
Capsules, 5-9 mm long; seeds numerous, egg-shaped, brown, 1.5-2.5 mm long.
Notes:
Two varieties occur in BC
1. Perianth segments dark red-purple; filament tubes only slightly enlarged above the base; flowers commonly 2 per stem; plants of SW BC .....................var. douglasii
1. Perianth segments pale purple; filament tubes with an inflated area just above the base; flowers commonly 3 per stem; plants of SC BC.......................... var. inflatum (Suksd.) Cholewa & Henderson
Ecology
Ecological Framework for Olsynium douglasii
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)
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 |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
264 | 31 | 1125 |
| Slope
Gradient (%) |
30 | 0 | 84 |
|
Aspect (degrees) |
15 | 23 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
2 | 1 | 6 |
| Modal
Nutrient Regime
Class |
D | ||
| #
of field plots species was recorded in: |
20 | ||
| Modal
BEC Zone Class |
CDF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
CDF(14), IDF(2) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Vernally moist rocky bluffs, grassy slopes and Quercus garryana woodlands in the lowland zone (var. douglasii) and sagebrush slopes in the montane zone (var. inflatum); var. douglasii - infrequent on S Vancouver Island and the Gulf Islands; var. inflatum - rare in SC BC; var. douglasii - S to N CA; var. inflatum - S to UT, NV and OR.Synonyms
Synonyms and Alternate Names:
Sisyrinchium douglasii A. Dietr
Sisyrinchium inalatum A. Nelson