|
|
|
|
|
|
|
|
|
|
|
| Platanthera dilatata var. dilatata (Pursh) Lindl. ex. Beck | Species Image Gallery (opens in a new window) |
||||||||||||||||||||
| TAXONOMY | |||||||||||||||||||||
| Family: | Orchidaceae | ||||||||||||||||||||
| Genus: | Platanthera | ||||||||||||||||||||
| Species Synonyms: | Habenaria dilata (Pursh) Hook. Limnorchis dilata (Pursh) Rydb. Platanthera dilatata var. angustifolia Hook. |
||||||||||||||||||||
| Common Names: | scent-bottle white bog orchid tall white orchid bog-candle white orchid |
||||||||||||||||||||
| DISTRIBUTION | |||||||||||||||||||||
| Canada: | Yukon – southwestern Mackenzie District, southwestern Alberta – Saskatchewan – Manitoba – Ontario – Quebec – Labrador – Newfoundland – Nova Scotia | ||||||||||||||||||||
| Saskatchewan: | widespread except for extreme northern regions; Cypress Hills – Pasquia Hills – Clearwater River | ||||||||||||||||||||
| Ecoregion: | Cypress Upland, Moist Mixed Grassland, Aspen Parkland, Boreal Transition, Mid-Boreal Upland, Mid-Boreal Lowland, Athabasca Plain, Churchill River Upland | ||||||||||||||||||||
| HABITAT | |||||||||||||||||||||
| Saskatchewan: | moist woods and bog margins | ||||||||||||||||||||
| Canada: | meadows, bogs, and wet woods | ||||||||||||||||||||
| RARITY STATUS | |||||||||||||||||||||
| Provincial
Status According to Harms (2003): |
Vulnerable |
||||||||||||||||||||
| Nature Conservancy Status: | G5 S2 |
||||||||||||||||||||
| Saskatchewan
Species at Risk Status: |
None |
||||||||||||||||||||
| COSEWIC Status: | None |
||||||||||||||||||||
| Platanthera dilatata var. dilatata is apparently secure in Saskatchewan. It is listed as vulnerable because most local populations are small. No immediate threats are known but are possible in the future. | |||||||||||||||||||||
| SPECIES DESCRIPTION | |||||||||||||||||||||
| Height: | 10 – 50 cm | ||||||||||||||||||||
| Roots: | fascicled, fleshy or tuber-like | ||||||||||||||||||||
| Stems: | erect, leafy | ||||||||||||||||||||
| Leaves: | cauline, alternate, few to several, ascending to spreading, 10 – 30 cm long, gradually reduced to bracts below inflorescence, linear to lanceolate or oblanceolate, apex acute, base sheathing | ||||||||||||||||||||
| Inflorescence: | raceme spicate, lax to dense, cylindrical; bracts appearing shorter than the flowers, lanceolate, appressed | ||||||||||||||||||||
| Flowers: | resupinate, fragrant, rather showy; calyx and corolla white; calyx 3 – 9 mm long, 3-nerved, lateral sepals spreading to reflexed; corolla 4 – 8 mm long, ovate to linear, 1- or 2-nerved, margin entire; labellum descending, 5 – 10 mm long, base dilated to orbiculate, margin entire; spur filiform, usually longer than labellum; pollinia enclosed in anther sacs; ovary 5 – 15 mm long, slender to stout | ||||||||||||||||||||
| Fruits: | capsule ascending | ||||||||||||||||||||
| |||||||||||||||||||||
