Pteridium aquilinum var. latiusculum (Desv.) A.Heller ex Underw.

REVISION OF PTERIDIUM
P. aquilinum (L.) Kuhn ssp. typicum
latlusculum (Desv.) Underw.
R.m.TryonjJr. ex HeHer	]98g
PLANTE FINLANDIA EXSICCATE
e Museo botanico Universitatis Helsingforsiensis distributes.
NEW YORK BOTANICAL GAflDEN
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409. Pteridium aquilinum (L.) Kuhn a glabra (Hook.)
Nylandia, par. Kyrkslàtt, Òsterby, in silva aperta, sicca. Fol. ster.
6 Aug. 1908, fol. sporif. 20 Aug. 1908.
leg. Harald Lindberg.
In Finlandia australi frequentissime aut frequenter et copiose
crescit, ad 63° fere subito rarescit, in parte boreali raris-
sime ad 65° occurrit. In parte max. orientali Lapponiae
Kemensis unico tantum loco ad 67° lectum est.
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