| Scientific Name: | Dryopteris expansa |
| Common Name: | northwest wood fern, Buckler fern |
| Family Name: | Dryopteridaceae |
| Origin: | North America, S.E. Asia / Japan / China, South Asia / India |
| Hardiness Zone: | Zone 4: (-34 to -29 °C) |
| Plant Type: | Fern |
| Mature Size: | 0.2 - 0.4m x 0.6 - 1.0m (height x width) |
| Habit: | Arching |
| Form: | Vase |
| Texture: | Medium - fine |
| Landscape Uses: | Native planting |
| Exposure: | Filtered shade |
| Soil or Media: | Acidic |
| Leaves: | Compound, Fern-like, Basal, Soft flexible, Pubescent, Tripinnate, Ovate, Ciliate, Serrate |
| Flowers: | |
| Fruit: | Sporangium (spores), Brown, Jun-Jul |
| Key ID Features: | |
| Frond blades triangular, green, lacy, 20-60(-90)cm long x 10-60cm wide, appearing unbranched yet tripinnate at the base and pinnate toward the apex; sori along central vain on the underside of the pinnules. | |