J ê : [ 2023 ]
POLYPODIUM hyperboreum.
Hairy Alpine Polypody.
CRYPTOGAMIA Filices.
Gen. Char. Fructifications scattered, in roundish dots,
not marginal. Involucrum none.
© Spec. Char. Frond lanceolate, bluntish, pinnated :
leaflets heart-shaped, pinnatifid, hairy on both sides:
lobes rounded, waved.
Syn. Polypodium hyperboreum. Sw. Fil. 39.
P. arvonicum. With. 774. Sm. FI. Brit. 1115,
FIull. 238. Syn. 191.
P. ilvense. With. 774. Hull. 237.
Acrostichum hyperboreum. Liljeblad in Stockh. TV.
fo r 1793. 201. t. 8.
A’, ilvense. Huds. 451. Dicks. H. Sicc.fasc. 8. 17;
but not o f Linnaeus.
A . alpinum. Bolt. Fil. 76. t. 42.
Filix alpina, pedicularis rubræ foliis subtùs villosis.
lia ii Syn. 118.
S e n t from Ben Lawers by Mr. G. Don, who informs us it
is rare in Scotland, growing out of the fissures of alpine rocks,
and often not above an inch high. Mr. Dickson gathered it
on the same mountain. But the place where it was originally
observed in Ray’s time, and still grows, is on a moist black
rock on Snowdon, almost at the top of the point called
' Clogwyn y Garnedh, looking North West, it is in perfection
in July.
The root is black and tufted. Fronds from 1 to 3 inches
high, linear-lanceolate, bluntish, clothed with tawny hairs,
and composed of numerous, nearly opposite, sessile, short,
heart-shaped, rounded, pinnatifid leaflets, whose segments
are rounded and waved, without any terminal prickles or
bristles. Masses of capsules red-brown, hairy, numerous,
at length often confluent. This is very distinct from the
real Acrostichum ilvense. Withering, who describes it twice
over, has given the name adopted in FI, Brit., but although
Mr. Liljeblad be wrong as to the genus, we gladly concur
with Professor Swartz in preferring his of hyperboreum, as
of a prior date and far more eligible in itself.