| Noun | 1. | spider fern - fern of North Africa and Azores and Canary Islandsfern - any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores genus Pteris, Pteris - large genus of terrestrial ferns of tropics and subtropics; sometimes placed in family Polypodiaceae |
| 2. | spider fern - Asiatic fern introduced in America fern - any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores genus Pteris, Pteris - large genus of terrestrial ferns of tropics and subtropics; sometimes placed in family Polypodiaceae |