Oenothera villosa Thunb.
hairy evening primrose (yellow evening-primrose)
Onagraceae (Evening Primrose family)
Introduction to Vascular Plants
hairy evening primrose (yellow evening-primrose)
Onagraceae (Evening Primrose family)
Introduction to Vascular Plants
SUBTAXA PRESENT IN BC
Species Information
General:
Biennial herb from a stout taproot; forming rosette in first year and an erect, stiff stem in second; greyish stiff-hairy, also with spreading hairs from red blister-like bases; stems 50-200 cm tall, simple or branched.
Leaves:
Stem leaves alternate, ascending or spreading, lanceolate or elliptic, 10-30 cm long, entire to minutely-toothed, hairy.
Flowers:
Inflorescence a few-flowered, open spike, glandular, buds erect, opening in the evening, subtended by large bracts or reduced leaves; hypanthium 2.5-4 cm long; petals yellow, fading duller or pale orange, 0.7-2 cm long; sepals 0.9-1.8 cm long, often marked reddish, bent back when in flower, the free tips in bud 0.5-2.5 mm long.
Fruits:
Capsules, erect, narrowly lanceolate, 2-3.5 cm long, 4-7 mm wide, more or less straight, 4-chambered, hairy; seeds 1-2 mm long, angled, irregularly pitted.
Ecology
Ecological Framework for Oenothera villosa
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) |
|||
| Slope
Gradient (%) |
50 | 50 | 50 |
|
Aspect (degrees) |
42 | 42 | 42 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 3 | 3 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
1 | ||
| Modal
BEC Zone Class |
IDF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
IDF(1) | ||
|
Source:
Klinkenberg 2013
|
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