Asplenium trichomanes	type		IMAGE
Maidenhair Spleenwort	fern	species

size <1 cut 1 decid. evergreen garden almost	ID tips A very pretty fern. Narrow frond with oval, uneared pinnae. Dark stipe and rachis on mature fronds.
where . ME NH VT MA RI CT click . U U U . . for key	Comment Diploid ssp. trichomanes more common, ascends from rock cracks. Tetraploid ssp. quadrivalens demands limestone, grows prostrate. It's an autopolyploid, having mutated to double the chromosomes frome the diploid ssp., not from a hybrid.
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