|
|
|
|
|
|
|
|
|
|
|
| Spiranthes lacera (Raf.) Raf. | Species Image Gallery (opens in a new window) |
||||||||
| TAXONOMY | |||||||||
| Family: | Orchidaceae | ||||||||
| Genus: | Spiranthes | ||||||||
| Species Synonyms: | none | ||||||||
| Common Names: | slender ladiestresses | ||||||||
| DISTRIBUTION | |||||||||
| Canada: | central Saskatchewan – Manitoba – Ontario – Quebec – New Brunswick – Nova Scotia | ||||||||
| Saskatchewan: | west-central Saskatchewan; Buffalo Narrows – Meadow Lake Provincial Park – Pasquia Hills | ||||||||
| Ecoregion: | Boreal Transition, Mid-Boreal Upland | ||||||||
| HABITAT | |||||||||
| Saskatchewan: | moist to dry, sandy or peaty sites | ||||||||
| RARITY STATUS | |||||||||
| Provincial
Status According to Harms (2003): |
Vulnerable |
||||||||
| Nature Conservancy Status: | G5 S2S3 |
||||||||
| Saskatchewan
Species at Risk Status: |
None |
||||||||
| COSEWIC Status: | None |
||||||||
| Spiranthes lacera is listed as vulnerable but is apparently secure in Saskatchewan. It is regionally restricted to one general region of the province and most local populations are small. No immediate threats are known but are possible in the future. | |||||||||
| SPECIES DESCRIPTION | |||||||||
| Height: | 10 – 60 cm | ||||||||
| Roots: | few to several, fasciculate, spreading to descending, slender to stout, fleshy | ||||||||
| Stems: | erect, cauline bracts sheathing | ||||||||
| Leaves: | 3 – 5, basal, petiole short, spreading, 1.5 – 6 cm long, 1 – 2.5 cm wide, obovate to elliptic or ovate | ||||||||
| Inflorescence: | spike secund to one-spiralled, up to 40-flowered; rachis glabrous to pubescent; floral bracts 5 – 10 mm long, 1 – 3 mm wide, ovate | ||||||||
| Flowers: | calyx and corolla 4.5 – 5 mm long, white; calyx spreading, distinct, lateral sepals white throughout; corolla lanceolate; labellum 4 – 6 mm long, 2 – 2.5 mm wide, ovate to oblong, apex dilated, pubescent, white with green or yellowish in centre; ovary 3 mm long, stout | ||||||||
| Fruits: | capsule 3 – 8 mm long, 2 – 4 mm wide | ||||||||
| |||||||||
