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| Mentzelia albicaulis (Dougl. ex Hook.) Dougl. ex Torr & Gray | Species Image Gallery (opens in a new window) |
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| 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 |
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| Common Names: | white-stem blazing-star white blazingstar whitestem stickleaf white-stemmed evening-star |
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| DISTRIBUTION | |||||||||
| Canada: | southern British Columbia, southwestern Saskatchewan | ||||||||
| Saskatchewan: | southwestern Saskatchewan | ||||||||
| Ecoregion: | Mixed Grassland | ||||||||
| HABITAT | |||||||||
| Saskatchewan: | dry, steep, south-facing slopes | ||||||||
| Associated Species: | Chenopodium album, Lappula squarrosa, Thlaspi arvense | ||||||||
| RARITY STATUS | |||||||||
| Provincial
Status According to Harms (2003): |
Endangered |
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| Nature Conservancy Status: | G5 N2 S1 |
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| Saskatchewan
Species at Risk Status: |
None |
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| COSEWIC Status: | None |
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| Mentzelia albicaulis 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, glabrous below, may be scabrous above | ||||||||
| Leaves: | basal and cauline, variable, some leaves entire, others lobed | ||||||||
| Inflorescence: | solitary or a few in loose corymbs; bracts linear to dentate | ||||||||
| Flowers: | sepals 2 – 3 mm long; corolla 5-merous, 3 – 5 mm long, 3 – 4 mm wide, obovate, yellow; stamens numerous, shorter than the petals, lacking staminodia | ||||||||
| Fruits: | capsule; seeds 10 – 40, pendulous, angular, winged, tuberculate | ||||||||
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