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rock brake

DEFINITIONS OF: rock brake

1

n dwarf deciduous lithophytic ferns

Types:
American parsley fern, American rock brake, Cryptogramma acrostichoides
rock-inhabiting fern of northern North America growing in massive tufts and having fronds resembling parsley
Cryptogramma crispa, European parsley fern, mountain parsley fern
fern of Europe and Asia Minor having short slender rhizome and densely tufted bright green fronds resembling parsley
Type of:
fern
any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores

n any of several small lithophytic ferns of tropical and warm temperate regions

Synonyms:
cliff brake, cliff-brake
Types:
Pellaea andromedifolia, coffee fern
evergreen fern of California and Baja California
Pellaea atropurpurea, purple rock brake
very 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 fern
cliff brake of California and Baja California having purple-brown leafstalks
Type of:
fern
any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores

n chiefly lithophytic or epiphytic fern of North America and east Asia

Synonyms:
American wall fern, Polypodium virgianum, rock polypody
Type of:
polypody
any of numerous ferns of the genus Polypodium
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