Platanthera dilatata var. leucostachys (Pursh) Lindl. ex Beck (Lindl.) Luer
fragrant white rein orchid (Sierra bog orchid)
Orchidaceae (Orchid family)
Introduction to Vascular Plants
fragrant white rein orchid (Sierra bog orchid)
Orchidaceae (Orchid family)
Introduction to Vascular Plants
Map
Distribution of Platanthera dilatata var. leucostachys
Click here to view the full interactive map and legend
Species Information
General:
Perennial herb from spindle-shaped stem-bases, with a few fibrous roots; stems 15-100 cm tall, leafy.
Leaves:
Basal and stem leaves oblong to linear or lanceolate, 10-30 cm long.
Flowers:
Inflorescence a terminal, 5- to 30-flowered spike, the flowers white, very fragrant, unstalked; sepals 3-9 mm long, broadly lanceolate, 3(4)-veined, the upper sepal egg-shaped, erect, converging with the petals and forming a hood; petals 1- to 2-veined, slightly shorter and wider than sepals; lip linear-lanceolate to lanceolate, 5-10 mm long, strongly round-dilated at base; spur 5-10 mm long, slenderly cylindric to slightly club-shaped, slightly curved; column about 2 mm long.
Fruits:
Capsules, ascending to erect.
Notes:
Three varieties occur in BC:
1. Spurs up to two-thirds the length of lips.................... var. albiflora (Cham.) Ledeb.
1. Spurs equaling the lips or slightly longer.
2. Spurs 1.5-2 times longer than lips, very slender, strongly curved..................... var. leucostachys (Lindl.) Luer
2. Spurs about the length of the lips, not very slender, not strongly curved....................... var. dilatata
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 Platanthera dilatata var. leucostachys
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) |
962 | 955 | 970 |
| Slope
Gradient (%) |
30 | 0 | 60 |
|
Aspect (degrees) |
220 | 220 | 220 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
4 | 2 | 7 |
| Modal
Nutrient Regime
Class |
B | ||
| #
of field plots species was recorded in: |
2 | ||
| Modal
BEC Zone Class |
SBS | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
ICH(1), SBS(1) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Wet meadows, seepage slopes, bogs, stream and lake margins and open forests in the montane to alpine zones; common throughout BC, except var. albiflora, rare in S BC; var. albiflora - N to AK, E to NF and S to CO, UT, ID and OR; var. dilatata - N to AK, YT and NT, E to ME, MA, NY, IN, IL, MN, SD, NM, UT, NV and OR; var. leucostachys - N to AK and S to WY, AZ and CA; Greenland.Status Information
| Scientific Name | Origin Status | Provincial Status | BC List (Red Blue List) | COSEWIC |
|---|---|---|---|---|
| Platanthera dilatata var. albiflora | Native | S5 | Yellow | Not Listed |
| Platanthera dilatata var. dilatata | Native | S5 | Yellow | Not Listed |
| Platanthera dilatata var. leucostachys | Native | S5 | Yellow | Not Listed |
BC Ministry of Environment: BC Species and Ecosystems Explorer.
Synonyms
Synonyms and Alternate Names:
Habenaria dilatata var. leucostachys (Lindl.) Ames
Habenaria leucostachys (Lindl.) S. Watson
Limnorchis graminifolia Rydb.
Platanthera leucostachys Lindl.