单词 | cliff brake |
释义 | cliff brake (once / 1969886 pages) n WORD FAMILY cliff brake n any of several small lithophytic ferns of tropical and warm temperate regions Syn|Hypo|Hyper cliff-brake, rock brake Pellaea andromedifolia, coffee fern evergreen fern of California and Baja California Pellaea atropurpurea, purple rock brakevery short shallowly creeping North American fern usually growing on cliffs or walls and having dark glossy leaf axes Pellaea mucronata, Pellaea ornithopus, bird's-foot ferncliff brake of California and Baja California having purple-brown leafstalks fern any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores |
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