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| Ericameria nauseosa var. glabrata (Gray) Nesom & Baird | Species Image Gallery (opens in a new window) |
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| TAXONOMY | |||||||||||||||||||||
| Family: | Asteraceae or Compositae | ||||||||||||||||||||
| Genus: | Ericameria | ||||||||||||||||||||
| Species Synonyms: | Chrysothamnus nauseosus var. glabratus
(Gray) Cronq. Chrysothamnus nauseosus var. graveolens (Nutt.) Piper ex Hall Chrysothamnus nauseosus var. petrophilus Cronq. Chrysothamnus graveolens (Nutt.) Greene Chrysothamnus nauseosus ssp. graveolens (Nutt.) Piper Ericameria nauseosa ssp. nauseosa var. glabrata (Gray) Nesom & Baird |
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| Common Names: | smooth rabbitbrush rubber rabbitbrush |
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| DISTRIBUTION | |||||||||||||||||||||
| Canada: | southern British Columbia, southeastern Saskatchewan | ||||||||||||||||||||
| Saskatchewan: | southeastern Saskatchewan; near Estevan | ||||||||||||||||||||
| Ecoregion: | Moist Mixed Grassland | ||||||||||||||||||||
| HABITAT | |||||||||||||||||||||
| Saskatchewan: | open, dry hills and plains | ||||||||||||||||||||
| RARITY STATUS | |||||||||||||||||||||
| Provincial
Status According to Harms (2003): |
Vulnerable |
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| Nature Conservancy Status: | G4 S3 |
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| Saskatchewan
Species at Risk Status: |
None |
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| COSEWIC Status: | None |
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| Smooth rabbitbrush is vulnerable because it is regionally restricted in Saskatchewan. | |||||||||||||||||||||
| SPECIES DESCRIPTION | |||||||||||||||||||||
| Height: | 20 – 60 cm tall | ||||||||||||||||||||
| Roots: | taproot often exposed | ||||||||||||||||||||
| Stem: | perennial shrub, widely branched, woody at base, very leafy, producing numerous annual shoots; covered in a close, felt-like mat of long, entangled hairs, with resin, appearing bark-like unless scraped | ||||||||||||||||||||
| Leaves: | alternate, sessile; 3 – 5 cm long, 1 – 2 mm wide, linear to thread-like, midvein prominent, hairless to woolly | ||||||||||||||||||||
| Inflorescence: | heads several in terminal clusters, disc flowers only, 5-flowered; bracts 20 – 25 in 3 series, inner considerably longer than outer, distinct vertical ranks, to 1 cm long, straw-coloured with brownish midvein, prominently boat-shaped, hairless | ||||||||||||||||||||
| Flowers: | disc flowers perfect, petals yellow, 6 – 10 mm long | ||||||||||||||||||||
| Fruits: | achene to 5 mm long, slender, hairy; pappus of numerous capillary bristles, tawny, barbed | ||||||||||||||||||||
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