FLORULA ORCADENSIS. 19 
D. hirta, while there are also other examples in pod which are rightly 
labelled. Drosera Anglica is labelled D. longifolia, as is often the case 
elsewhere, although English botanists mostly apply this latter name to 
D. intermedia. Hypocheris radicata is labelled Apargia hispida; Po- 
tamogeton pusillus is labelled P. gramineus ; Scirpus cespitosus is la- 
belled S. paucifforus. 
In other instances the names on the labels have been erroneous at 
first, corresponding with Lowe's nomenclature, and corrected subse- 
quently into the right names of the accompanying specimens. Thus, 
Veronica serpyllifolia was first named F. spicata ; Sparganium natans 
was named S. simplex; Aira cespitosa was named Agrostis capillaris. 
In one instance, however, it would seem that the accuracy of Lowe's 
nomenclature has been wrongly disputed ; namely, in that of Elymus 
arenarius, doubted by Neill and also in the Flora. "There are two ex- 
amples of this Grass in the little herbarium cited, which had been first 
labelled Arundo arenaria, and subsequently corrected by another pen 
into Elymus. 
Further, it may be proper to remark here that some of the plants in 
each list, the admitted and the omitted species, ought to be looked 
upon as introduced species only. Thus, Spartium scoparium and Ulex 
Europæus are placed among the omitted species, although actually to be 
seen in Orkney, because it is expressly stated by Dr. Gillies, in his 
manuscript * Flora Orcadensis,’ that they are certainly introduced shrubs 
there. Armoracia and Tanacetum, admitted into the former list, can 
hardly be more than escapes from cultivation. The two Fumarias and 
several others are the ordinary annual weeds which accompany agricul- 
ture or horticulture widely over the earth. 
Without going further into individual explanations as to the grounds 
on which they are severally rejected as inhabitants of Orkney, I pro- 
ceed to enumerate the names of a considerable number of species which 
have been recorded as found in the isles, but which cannot be accepted 
as natives, or even established colonists, without some additional confir- 
mation, which may perhaps be obtained for three or four of them. 
LIST OF OMITTED SPECIES. 
Ranunculus Lingua. Sagina ap 
R. arvensis. Viola odorata. Arenaria Norvegica. 
Draba hirta. ra intermedia, Cerast. * tomentosum.” 
Cardamine impatiens. Bilene nutans. : C. latifolium. 
