|
|
|
|
|
|
|
|
|
|
|
| Mentzelia albicaulis (Dougl. ex Hook.) Dougl. ex Torr & Gray | Species Image Gallery (opens in a new window) |
||||||||
| TAXONOMY | |||||||||
| Family: | Loasaceae | ||||||||
| Genus: | Mentzelia | ||||||||
| Species Synonyms: | Mentzelia albicaulis var. gracilis
J. Darl. Mentzelia albicaulis var. tenerrima (Rydb.) St. John Acrolasia albicaulis (Dougl. ex Hook.) Rydb. Mentzelia albicaulis var. ctenophora (Rydb.) St. John Mentzelia gracilis H.J. Thompson & Lewis non Urban & Gilg Mentzelia mojavensis H.J. Thompson & Roberts |
||||||||
| Common Names: | white-stem blazing-star white blazingstar whitestem stickleaf white-stemmed evening-star |
||||||||
| DISTRIBUTION | |||||||||
| Canada: | southern British Columbia, southwestern Saskatchewan | ||||||||
| Saskatchewan: | southwestern Saskatchewan | ||||||||
| Ecoregion: | Mixed Grassland | ||||||||
| HABITAT | |||||||||
| Saskatchewan: | dry, steep, south-facing slopes | ||||||||
| Associated Species: | bristly sheepburr, lambsquarters, pennycress | ||||||||
| RARITY STATUS | |||||||||
| Provincial
Status According to Harms (2003): |
Endangered |
||||||||
| Nature Conservancy Status: | G5 N2 S1 |
||||||||
| Saskatchewan
Species at Risk Status: |
None |
||||||||
| COSEWIC Status: | None |
||||||||
| White-stem blazing-star is endangered because it is extremely rare in Saskatchewan. This species is limited to one very small area and is almost always locally sparse. No immediate threats are known for this species. | |||||||||
| SPECIES DESCRIPTION | |||||||||
| Height: | 15 – 40 cm | ||||||||
| Roots: | taproot | ||||||||
| Stems: | often branching from the base, white, hairless below, may be rough hairy above | ||||||||
| Leaves: | basal and on stem, variable, some leaves entire, others lobed | ||||||||
| Inflorescence: | solitary or a few in loose flat-topped clusters; bracts smooth to square-toothed | ||||||||
| Flowers: | sepals 2 – 3 mm long; petals 5, 3 – 5 mm long, 3 – 4 mm wide, inversely egg-shaped, yellow; stamens numerous, shorter than the petals, lacking sterile stamens | ||||||||
| Fruits: | capsule; seeds 10 – 40, hanging down, angular, winged, bumpy | ||||||||
| |||||||||
