CV1 PROCEEDINGS — PERTHSHIRE SOCIETY OF NATURAL SCIENCE. 
where. They might, with equal propriety, perhaps, have been 
included in the list of natives (just as some of the natives might have 
been classed as colonists) but for the doubt as to whether they had 
spread to the wild spots from the cultivated ground, or vice versa . (49) 
Ranunculus Sardous. 
,, arvensis. 
Papaver dubium. 
,, Rhoeas. 
,, Argemone. 
Fumaria pallidiflora. 
,, Boraei. 
,, confusa. 
,, officinalis. 
,, densiflora. 
Brassica campestris. 
,, Sinapis. 
Capsella Bursa-Pastoris. 
Raphanus Raphanistrum. 
Viola arvensis. 
Spergula arvensis. 
Scandix Pecten-Veneris. 
FEthusa Cynapium. 
Sherardia arvensis. 
Valerianella dentata. 
Anthemis arvensis. 
Matricaria inodora. 
Chrysanthemum segetum. 
Senecio vulgaris. 
Centaurea Cyanus. 
Crepis virens. 
Sonchus arvensis. 
,, asper. 
,, oleraceus. 
Anagallis arvensis. 
Lithospermum arvense. 
Veronica persica. 
,, agrestis. 
,, polita. 
,, hederaefolia. 
Anchusa arvensis. 
Stachys arvensis. 
Galeopsis Ladanum. 
,, Tetrahit. 
,, speciosa. 
Lamium purpureum. 
,, intermedium. 
,, amplexicaule. 
Chenopodium album. 
Atriplex patula. 
Polygonum Convolvulus. 
Euphorbia Helioscopia. 
,, Peplus. 
„ exigua. 
6. Probably Native. 
There are certain plants about which it is very difficult to form 
an opinion, since so much can be said both for and against their 
being natives. A not inconsiderable number of them are undoubt¬ 
edly introductions in some of the places in which they occur, a fact 
which makes it all the more difficult to decide whether they are 
really, as they seem to be, indigenous in their other stations. Under 
these circumstances, it has been thought expedient to place them in a 
group by themselves, and to give in the Appendix the reasons for or 
against their being considered native. (20) 
Lepidium campestre. 
Malva moschata. 
Rhamnus Frangula. 
Prunus Avium. 
Rosa rubiginosa. 
Pyrus Aria. 
Ribes rubrum. 
Daucus Carota. 
Sambucus nigra. 
Dipsacus sylvestris. 
Tanacetum vulgare. 
Lapsana communis. 
Symphytum officinale. 
Lithospermum officinale. 
Verbascum Thapsus. 
Linaria vulgaris. 
Calamintha Acinos. 
Salix triandra. 
Typha latifolia. 
Butomus umbellatus. 
