94 FLORA ORCADENSIS. 
Genus CCXLV.—POLYSTICHUM (Roth.) | 
539. P. Loncuitis (Roth.), Holly Fern. 
I have two fronds of this. The first was got per 
Dr Grant from Mrs Anderson, Manse, Hoy, who found 
the fern in one of the gullies on north side of Ward 
Hill about 1900. The other was got from G. W. 
Scarth, who found it in fair abundance on east 
shoulder of Ward Hill. This was in 1908. 
540. P. ACULEATUM (Roth.), Prackly Shield Fern. 
Rare and local. 
Hoy (Dr Boswell). 
Var. lobatwm (Presl.) Wooded burn, west of old 
church, Hoy (Dr Grant). 
Genus CCXLVL—LASTREA (Presl.) 
541. L. Finrx-mas (Presl.), Male Fern. Common. 
Var. Borrert (Newm.), Male Fern. Rather scarce. 
My specimen was got on north side of Ward Hill, Hoy. 
542. L. SPINULOSA (Presl.) 
Var. exaltata (Syme). Waulk Mill Bay (October 
1906). Seen by Mr Ar. Bennett. 
Var. decupiens (Syme). Seen by Mr Ar. Bennett, 
who said it was this. Got at Redland (1905). 
543. L. DILATATA (Presl.), Buckler Fern. Common. 
Var. alpina. Orphir; Stenness (Dr Boswell). 
544, L. aMULA (Brack.), Buckler Fern. 
Not uncommon in Orphir and South Isles. Mr 
Ar. Bennett says :—‘“ 1 have several fine specimens — 
