|
|
|
|
|
|
|
|
|
|
|
| Halimolobos virgata (Nutt.) O.E. Schulz | Species Image Gallery (opens in a new window) |
||||||||||
| TAXONOMY | |||||||||||
| Family: | Brassicaceae | ||||||||||
| Genus: | Halimolobos | ||||||||||
| Species Synonyms: | Sisymbrium virgatum Nutt. | ||||||||||
| Common Names: | halimolobos rod halimolobos stemmy halimolobos slender mouse-ear cress |
||||||||||
| DISTRIBUTION | |||||||||||
| Canada: | southeastern Alberta - southwestern Saskatchewan | ||||||||||
| Saskatchewan: | southwestern Saskatchewan; Cypress Hills and surrounding area | ||||||||||
| Ecoregion: | Mixed Grassland, Moist Mixed Grassland, Cypress Upland | ||||||||||
| HABITAT | |||||||||||
| Saskatchewan: | silty, sandy, or clay soils on eroded or grazed grassland slopes and flats | ||||||||||
| Associated Species: | Cusick’s bluegrass, dense clubmoss, holboell rockcress, flatspine stickseed, narrowleaf goosefoot, narrowleaf milkvetch, needleleaf sedge, pygmyflower, wild onion, wood draba | ||||||||||
| RARITY STATUS | |||||||||||
| Provincial
Status According to Harms (2003): |
Endangered |
||||||||||
| Nature Conservancy Status: | G2G3 N2 S1 |
||||||||||
| Saskatchewan
Species at Risk Status: |
Endangered |
||||||||||
| COSEWIC Status: | Endangered |
||||||||||
| Halimolobos is endangered because it is rare and somewhat regionally restricted in the province. In addition, population sizes vary. Possible threats have been identified for this species, including occurring in a fragile habitat. | |||||||||||
| SPECIES DESCRIPTION | |||||||||||
| Height: | 20 – 40 cm | ||||||||||
| Roots: | taproot slender | ||||||||||
| Stems: | small persistent woody base; solitary, simple to sparingly branched, hairs mixed, long, branched, or straight | ||||||||||
| Leaves: | basal rosette, 1 – 4 cm long, 3 – 9 mm wide, narrowly spoon-shaped to lance-shaped, hairy, margin entire to toothed; stem leaves alternate, sessile to clasping with ear-like lobes, 1 – 4 cm long, 4 – 6 mm wide, slightly reduced upwards, lance-shaped to oblong, margin toothed to entire | ||||||||||
| Inflorescence: | unbranched, bracts lacking; stalks slender | ||||||||||
| Flowers: | sepals purplish; petals to 4 mm long, white with pinkish veins | ||||||||||
| Fruits: | silique 4 – 10 mm long, 1 – 2 mm wide, round in cross-section, purplish, hairless; seeds in two rows | ||||||||||
| |||||||||||
