More on Adder’s-tongues

Now that I can be sure which is which, my Raasay populations of adder’s-tongues look like this in terms of 1 km square distributions:

Ophioglossum azoricum

Ophioglossum azoricum

Ophioglossum vulgatum

Ophioglossum vulgatum

 

Red dots show those confirmed by DNA analysis.  Black dots are populations where I am sure of the identity without need of molecular confirmation. Green dots are populations that need checking.

O. vulgatum populations are all under bracken.  However, two populations of O. azoricum are also under bracken, in both cases nearer to bigger populations in either short coastal turf or dried up pools.

O. azoricum is now confirmed on Raasay, Rum and Eigg but is not known on Skye, by far the biggest landmass in the vice-county.

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