Botrychium hesperium (Maxon & R.T. Clausen) W.H. Wagner & Lellinger
western moonwort
Ophioglossaceae (Adder's-tongue family)
Introduction to Vascular Plants
western moonwort
Ophioglossaceae (Adder's-tongue family)
Introduction to Vascular Plants
Species Information
General:
Deciduous perennial, 3-15 cm tall.
Trophophores:
Triangular-shaped to narrowly oblong, dull, grey-green, the stalks up to 1/4 the length of the trophophores; blades 1- to 2-pinnate, up to 6 cm long and up to 5 cm wide; pinnae to 6 pairs, usually approximate or overlapping, with entire or slightly lobed margins; the basal pair of pinnae, dissimilar in size, commonly much larger and more divided than the adjacent pair.
Sporophores:
1- to 3-pinnate, 2-3 times length of trophophores, with a single midrib, this midrib sometimes with 2 smaller, less conspicious ribs.
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 Botrychium hesperium
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) |
1426 | 1320 | 1550 |
| Slope
Gradient (%) |
15 | 4 | 25 |
|
Aspect (degrees) |
112 | 45 | 180 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 3 | 3 |
| Modal
Nutrient Regime
Class |
B | ||
| #
of field plots species was recorded in: |
3 | ||
| Modal
BEC Zone Class |
MS | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
MS(1) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Mesic grassy slopes in montane to subalpine zones; rare in SC and SE BC; E to ON and S to MI, MN, CO and AZ, disjunct in ON and MI.Status Information
Synonyms
Synonyms and Alternate Names:
Botrychium lunaria subsp. occidentale A.& D. L÷ve & Kapoor
Botrychium matricariifolium subsp. hesperium Maxon & Clausen
Botrychium matricariifolium var. hesperium (Maxon & Clausen) Broun