Euphrasia subarctica Raup
arctic eyebright
Orobanchaceae (Broom-rape family)
(Previously in Scrophulariaceae)
Introduction to Vascular Plants
arctic eyebright
Orobanchaceae (Broom-rape family)
(Previously in Scrophulariaceae)
Introduction to Vascular Plants
Species Information
General:
Annual herb from a taproot; stems slender, erect, 3-30 cm tall, simple or branched from below the middle, minutely hairy and sometimes glandular-hairy above.
Leaves:
Opposite, unstalked, few, egg-shaped to circular, 2-18 mm long, palmately veined, prominently 7- to 11-toothed, sparsely hairy; bracts resembling the leaves but with more pointed teeth.
Flowers:
Inflorescence a terminal spike of single small flowers in the axils of leafy bracts; corollas whitish with purple markings and a yellow eye, about 5 mm long, 2-lipped, the upper lip slightly concave with 2 lobes, the lower lip spreading, with 3 shallowly notched, oblong lobes; calyces bell-shaped, hairy or glandular-hairy, almost as long as the corolla, 4-toothed, the teeth triangular or lanceolate; stamens 4.
Fruits:
Capsules, oblong, flattened, 3-6 mm long, more or less hairy; seeds numerous, narrowly winged.
Illustration
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Ecology
Ecological Framework for Euphrasia subarctica
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) |
635 | 550 | 840 |
| Slope
Gradient (%) |
9 | 3 | 12 |
|
Aspect (degrees) |
179 | 130 | 200 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 3 | 4 |
| Modal
Nutrient Regime
Class |
B | ||
| #
of field plots species was recorded in: |
11 | ||
| Modal
BEC Zone Class |
MH | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
ICH(1), MH(10) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Moist to wet streambanks, shores, bogs, gravelly openings in thickets, and heath in the montane and subalpine zones; infrequent in BC in and east of the Coast-Cascade Mountains and north of 52degreeN; N to AK, YT and NT, E to NF and S to MT; Greenland.Status Information
Synonyms
Synonyms and Alternate Names:
Euphrasia arctica
Euphrasia arctica var. disjuncta sensu (Fernald & Wiegand) Cronquist
Euphrasia arctica var. dolosa (Boivin) Boivin
Euphrasia disjuncta Fernald & Wiegand
Euphrasia disjuncta var. dolosa Boivin
Euphrasia pennellii Callen p.p.