76 FLORA ORCADENSIS. 
416. H. virtpis (Br.), Frog-orchis. Searce. 
Houton (Syme); Standing Stones (Dr Fortescue) ; 
fairly common between Gloup and Brough, Deerness. 
I have specimens gathered in Westray (1905). 
Genus CXCVI.—LISTERA (Br.) 
417. L. corDaTa (Br.), Tway-blade. Rare. 
Hoy, Evie, Rousay, Orphir. My specimens are 
from near Kame, Hoy; and from Orphir, sent by J. 
Omond, teacher. 
418. L. ovata (Br.), Tway-blade. Searce. 
Wideford Burn (1900, M. Spence); Seatter, St. 
Ola; Quendale, Rousay (G. Robson). I find this 
species 18 more numerous than the previous one. 
Genus CXCVII—GOODYERA (Br.) 
419. G. REPENS (Br.), Creeping Goodyera. Very 
rare. 
Dr Grant sent me one plant which he found near 
Stairwaddy, Stromness. Mr Ar. Bennett says :—“ The 
finding of a single specimen cannot be considered as 
admitting the plant as an Orcadian species. Still 
there is no reason why it should not grow as far 
north, as it occurs throughout Sweden up to Lapland ; 
in North and South Norway; and is distributed 
throughout Finland and Lapland, except the four 
‘northern provinces, in which few stations are on 
record. It occurs in West Ross, East and West 
Sutherland, but is not on record for Caithness or the 
Outer Hebrides. Prof. Trail says:—“<In Scotland, so 
