Epilobium hornemannii Rchb.
Hornemann's willowherb
Onagraceae (Evening Primrose family)
Introduction to Vascular Plants
Hornemann's willowherb
Onagraceae (Evening Primrose family)
Introduction to Vascular Plants
SUBTAXA PRESENT IN BC
Species Information
General:
Perennial herb from short, leafy stolons; stems 10-45 cm tall, loosely clumped, short stiff-hairy in lines below, glandular short stiff-hairy above (in inflorescence).
Leaves:
Broadly elliptic to narrowly egg-shaped below, lance- to narrowly egg-shaped above, 1.5-5.5 cm long, 0.7-2.9 cm wide, finely toothed, glabrous but margins sometimes fringed with short, stiff hairs.
Flowers:
Inflorescence an erect or nodding, terminal raceme; hypanthium 1-2.2 mm long; petals 3-9 mm long, rose to pink, rarely white, notched at tip; sepals 2-4.5 mm long, somewhat glandular; ovaries 1.5-2.5 cm long; anthers 0.4-1.2 mm long; styles 1.7-4.2 mm long; stigmas club-shaped or cylindric.
Fruits:
Capsules, 4-6.5 cm long, linear, green, with scattered glandular and short, stiff hairs; stalks 5-15 mm long; seeds narrowly egg-shaped, 0.9-1.2 mm long, pimply, tuft of hairs white, 6-11 mm long, readily detaching.
Notes:
Two subspecies occur in BC:
1. Flowering plants with several pairs of broad, withered, persistent leaves at base; leaves relatively thick, margins sharply toothed................. ssp. behringianum (Hausskn.) Hoch & Raven
1. Flowering plants lacking broad, withered leaves at base; leaves relatively thin, margins entire or bluntly toothed...................... ssp. hornemannii
Ecology
Ecological Framework for Epilobium hornemannii
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) |
1455 | 30 | 2340 |
| Slope
Gradient (%) |
17 | 0 | 85 |
|
Aspect (degrees) |
168 | 5 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
5 | 1 | 7 |
| Modal
Nutrient Regime
Class |
D | ||
| #
of field plots species was recorded in: |
97 | ||
| Modal
BEC Zone Class |
ESSF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BAFA(3), BWBS(1), CMA(2), CWH(6), ESSF(32), ICH(4), IMA(1), MH(1), MS(9), SBPS(9), SBS(8), SWB(2) | ||
|
Source:
Klinkenberg 2013
|
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