| Scientific Name: | Erythronium americanum |
| Common Name: | yellow trout lily, adder's tongue |
| Family Name: | Liliaceae |
| Origin: | Canada - eastern, U.S. - northeast |
| Hardiness Zone: | Zone 3: (-40 to -34 °C) |
| Plant Type: | Herbaceous perennial |
| Mature Size: | 0.1 - 0.2m x 0.1 - 0.3m (height x width) |
| Habit: | Upright |
| Form: | Oval - vertical |
| Texture: | Medium - fine |
| Landscape Uses: | Mixed shrub border, Perennial border, Spring interest, Woodland margin |
| Exposure: | Part sun/part shade, Filtered shade, Deep shade |
| Soil or Media: | Acidic, Humus rich, Well-drained |
| Leaves: | Simple, Basal, Soft flexible, Glabrous, Elliptic, Oblong, Entire |
| Flowers: | Flowers solitary, Yellow, Apr |
| Fruit: | Capsule, Green, Brown, May-Jun |
| Key ID Features: | |
| Leaves tulip-like, basal, 2 per flowering bulb, most elliptic-oblong, 7-15cm long x 3-4cm wide, often mottled gray or brown to purple, margins entire; flowers solitary, pendulous, lily-like with 6 tepals, recurved upward, and close at night; capsules 12-15mm long. | |