Platanthera chorisiana (Cham.) Rchb.
Chamisso's rein orchid (Chimissso's orchid; small bog orchid)
Orchidaceae (Orchid family)
Introduction to Vascular Plants
Chamisso's rein orchid (Chimissso's orchid; small bog orchid)
Orchidaceae (Orchid family)
Introduction to Vascular Plants
Species Information
General:
Perennial herb from spindle-shaped stem-bases, with a few fibrous roots; stems 5-20 cm tall, with 1 or 2 bracts to 2 cm long.
Leaves:
Usually 2 or 3 nearly basal leaves nearly circular or egg-shaped to lanceolate, 2.5-6 cm long, about 1/2 as wide, sheathing.
Flowers:
Inflorescence a terminal, 5- to 18-flowered, crowded spike, the flowers small, greenish, unstalked, the lower flowers shorter than floral bracts; sepals 2 mm long, oblong, 1-veined, the upper sepal slightly hooded; petals strongly 3-veined, slightly shorter and wider than sepals; lip 1.5-2 mm long, nearly as wide, concavely curved, the margins slightly lobed, erect; spur barely 1 mm long, slightly curved, bulbous; column plump, about 1 mm long.
Fruits:
Capsules, ascending to erect.
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 chorisiana
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) |
298 | 60 | 780 |
| Slope
Gradient (%) |
22 | 0 | 65 |
|
Aspect (degrees) |
93 | 5 | 330 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
4 | 0 | 7 |
| Modal
Nutrient Regime
Class |
B | ||
| #
of field plots species was recorded in: |
20 | ||
| Modal
BEC Zone Class |
CWH | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
CWH(16), MH(2), SBS(2) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Sphagnum bogs, bog forests, and swamps in the lowland and montane zones; infrequent in coastal BC; N to AK and S to WA; Japan.Status Information
Synonyms
Synonyms and Alternate Names:
Habenaria chorisiana Cham.