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Atlas Of Ferns Of The British Isles

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ASPIDIACEAE<br />

0<br />

6<br />

5<br />

0<br />

27.4<br />

DRYOPTERIS<br />

REMOTA<br />

UTM GRID<br />

Kkenstres<br />

mass<br />

9<br />

9<br />

CHANNEL GLANDS<br />

PLOT TED ON 0<br />

WV<br />

41'<br />

soo<br />

100<br />

0<br />

8<br />

2<br />

1 2<br />

27.4 Dryopteris remota (A.Br.) Druce<br />

1 2<br />

An apogamous species probably originating from the hybrid<br />

between D.expansa and D.pseudomas could be expected where<br />

these species grow together. It is, however, rare. Plants brought<br />

into cultivation as Lastrea 'boydii' from Loch Lomond appear<br />

to be this species but it has not been seen in the wild this century.<br />

<strong>The</strong> two Irish specimens are even more perplexing as D.expansa<br />

is so far not recorded from Ireland; both records (Glen Flesk ,<br />

v.c. H2 and Dalystown, v.c. H15) need refinding (see<br />

3 4<br />

9<br />

8<br />

N1<br />

0<br />

4505;<br />

Zs<br />

N2<br />

7<br />

4<br />

5 6<br />

A.C.Jermy & S.Walker, in C.A.Stace (ed.). loc.cit.: 115). It is<br />

known however, that in Europe D.remota occurs in the absence<br />

of either of the above species and probably does not now arise<br />

de novo from hybridisation.<br />

<strong>The</strong> hybrid D.austriaca x pseudo mas recorded as D. x woynarii<br />

Rothm. from Lochinver, v.c. 108, in A.C.Jermy & S.Walker, in<br />

C.A.Stace (ed.) loc. cit.: 115; 1975, is now considered to be<br />

doubtfully of that parentage and more likely D. x ambrosiae.<br />

87

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