| Scientific Name: | Cardamine oligosperma |
| Common Name: | snapweed, little western bittercress |
| Family Name: | Brassicaceae |
| Origin: | B.C. east of Cascades, B.C. west of Cascades, U.S. - northwest, U.S. - southwest |
| Hardiness Zone: | Zone 4: (-34 to -29 °C) |
| Plant Type: | Annual (true), Biennial, Herbaceous perennial, Weed (horticultural) |
| Mature Size: | 0.1 - 0.2m x 0.1 - 0.3m (height x width) |
| Habit: | Upright |
| Form: | Round |
| Texture: | Fine |
| Landscape Uses: | Herb |
| Exposure: | Full sun, Part sun/part shade |
| Soil or Media: | Well-drained |
| Leaves: | Lobed, Compound, Alternate, Basal, Soft flexible, Pubescent, Odd-pinnate, Leaflets stalked, Oblanceolate, Pinnately lobed |
| Flowers: | Raceme, White, Mar-Apr-May-Jun-Jul |
| Fruit: | Silique, Brown, Apr-May-Jun-Jul |
| Key ID Features: | |
| Leaves mostly basal, 3-4cm long x 1-2cm wide, pinnately compound, leaflets 4-9mm long x 2-6mm wide, sometimes lobed or narrow, petiolules ~7mm long (stem leaves similar); racemes 3-10cm long, flowers small with 4 white petals 2-4mm long, sepals 1-2mm long; silique 1.5-2.5cm long x 1-1.5mm wide, exploding to release 15-25 seeds, on petiole stalk 4-7mm long. | |