Platanthera obtusata (Banks ex Pursh) Lindl. subsp. obtusata
one-leaved rein orchid (bluntleaved orchid)
Orchidaceae (Orchid family)
Introduction to Vascular Plants
one-leaved rein orchid (bluntleaved orchid)
Orchidaceae (Orchid family)
Introduction to Vascular Plants
Photograph
Map
Distribution of Platanthera obtusata subsp. obtusata
Click here to view the full interactive map and legend
Species Information
General:
Perennial herb, from a few fleshy-tuberous roots; stems 10-30 cm tall, without leaves.
Leaves:
Single basal leaf, oblanceolate to elliptic or egg-shaped, 5-15 cm long, 1-5 cm wide, blunt-tipped, long-tapering to base.
Flowers:
Inflorescence a terminal, loosely 3- to 15-flowered spike, bracted; flower bracts green and up to 15 mm long below, yellowish and much reduced above; flower stalks 1-5 mm long; flowers pale green to yellow-green, sometimes the lip or petals whitish; lower sepals 4-6 mm long, elliptic-lanceolate, somewhat bent back, the upper sepal kidney-shaped to nearly round, 3-4 mm long, somewhat erect, arching over column; petals broadly lanceolate, curved upward, contacting the upper sepal; lip 5-10 mm long, lance-linear, greenish-white, hanging downward with slightly up-curved tip; spur slender, pointed, tapering from base, somewhat curving, as long as lip; column 2-3.5 mm long.
Fruits:
Capsules, erect, ellipsoid, to 10 mm long.
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 obtusata ssp. obtusata
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) |
1069 | 590 | 1550 |
| Slope
Gradient (%) |
9 | 0 | 36 |
|
Aspect (degrees) |
290 | 135 | 350 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 3 | 4 |
| Modal
Nutrient Regime
Class |
D | ||
| #
of field plots species was recorded in: |
12 | ||
| Modal
BEC Zone Class |
BWBS | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BWBS(2), ICH(1), IDF(2), MS(1) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Moist to wet forests, bogs, swamps and streambanks in the montane zone; infrequent throughout BC, except absent from the coast; N to AK, YT and NT, E to NF and S to ME, MA, NY, MI, WI, MN, CO, UT, ID and OR.Status Information
Synonyms
Synonyms and Alternate Names:
Habenaria obtusata (Banks ex Pursh) Richardson
Habenaria obtusata var. collectanea Fernald
Lysiella obtusata (Banks ex Pursh) Rydb.