159 



192. Solanum nigrum. L., var. Doicglasii Gray. Not before reported from Oregon. 



192. Solanum sisytnbriifolium Lam. Reported from other stations. 



194. Datura villosa Fernald. A Mexican species, not before reported from Oregon. 



195. Nicotiana rustica L. Did not survive first season. 



196. Plantago Coronopus L. Not before reported from Oregon. Found second 



season only. 



197. Galium veriim L. Had been reported from Salem. 



198. Acanthospermum australe (Loefl.) Ktze. Not before reported from Oregon. 



199. Ambrosia tenuifolia Spreng. A tropical species; not found second season. 



200. Xanlhium speciosum Kearn. Indigenous in various western stations, but 



plainly introduced here. 



201. Xanthium spinosum L. Reported from other stations. 



202. Hemizonia pungens (Hook. & Arn.) Torr. & Gray, var. Parryi (Greene) Hall. 



Indigenous in California. 



203. Matricaria inodora L. Reported from central Washington. 



204. Cotula australis Hook. Reported from California and southern Oregon. 



205. Artemisia vulgaris L. Not before reported from Oregon. 



206. Arctotis calendulacea L. Not found second season. 



207. Seyiecio Jacobaea L. Not before reported from Oregon. 



208. Senecio viscosus L. Same note as above. 



209. Carduus crispus L. Same note as the last. 



210. Carduus nutans L. Same note as the last. 



211. Silybum marianum (L.) Gaertn. Reported from other stations. 



212. Centaurea Calcitrapa L. Reported from other stations. 



213. Centaurea consimilis Boreau. Reported from eastern Washington. 



In addition to the above, the following were collected, but 

 on account of the imperfect state of the material — lack of fruit 

 or flowers, or both — could not be satisfactorily determined : 



214. Salix spp. — two forms; not in flower. One had the golden-yellow bark of 



5. alba, the other seemed a native form. 



215. Polentilla sp. A creeping form, without flowers. Perhaps P. reptans L. 



216. Rosa sp. In fruit only. Resembling R. rubiginosa, but much larger. 



217. Desmodium sp. Not in flower. A prostrate form. 



218. Scrophularia sp. In fruit. Capsules very small. 



219. Sambucus sp. Not in flower. Probably one of the native species. 



220. Cucurbita sp. Not in flower. Apparently one of the cultivated species. 



221. A prickly Composite with yellow flowers, suggesting Cousinia, that baffled 



all attempts at identification. 



222. A plant with immense prickly cut-toothed woolly leaves forming a rosette 



on the sand, without flowers. A probable Composite, possibly of the 

 Thistle tribe. 



Of the 213 identified species listed above, it will be seen that 

 32, or 15 per cent of the whole, are indigenous; 88, or 42 per 

 cent, are introduced, but are not restricted to the Linnton area; 



