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very abundant, especially in meadows where it is even now a 

 bad pest in many places. Equisetum Telmataei Ehrh. was fre- 

 quently troublesome, especially in poorly drained pastures. On 

 recently burned over stump lands and newly cleared land, the 

 fireweed, Epilobium angustifolium L., frequently persisted for 

 several years on the uplands, while on the lowlands, Epilobium 

 adenocaulon Haussk., was a common pest in pastures, meadows 

 and grainfields. Neither of these weeds persisted long under 

 cultivation. 



Naturalized and Adventive Weeds 



1. Species well established and rather generally distributed 

 before 1905. 



In meadows : Gzwwawia lanata (L.) Hub., locally known as 

 mesquite grass, especially common on peat land; Achillea 

 Millefolium L., Plantago lanceolata L., Rumex acetosella L., 

 on uplands. In pastures: Cirsium lanceolatum (L.) Hill, Cir- 

 sium arvense (L.) Scop., Verbascum Thapsus L., Taraxacum 

 officinale L., Bromus hordeaceus L., Aira caryophylla L. In 

 grainfields: Brassica arvensis (L.) Ktze., Brassica juncea (L.), 

 Cosson, Brassica campestris L., Raphanus sativus L., Spergula 

 arvensis L., Avena Jatua var. glabra ta Peterm. and, especially 

 in peat land. Polygonum hydropiper L. On cultivated soils 

 and in gardens: Chenopodium album L., Amaranthus retrofiexus 

 L., Stellaria media (L.) Cyrill, Capsella Bursa-pastoris (L.) 

 Medic. Sonchus asper L., Sonchus oleraceus L., Polygonum 

 Persicaria L. and Polygonum Convolvulus L. About barnyards 

 and in waste places: Polygonum avicidare L., Plantago major 

 L., Anthemis Cotiila L., Sisynibrium officinale (L.) Scop., Rumex 

 crispus L., Echinochloa crus-galli (L.) Beauv. Although native 

 on the Pacific coast, Matricaria suaveolens (Pursh) Buch. and 

 Erigeron canadensis L. appear as if introduced in Whatcom 

 County. 



2, Species occurring before 1905 but apparently not spread 

 to any extent since. 



Mostly in waste places or about farm buildings: Arctium 

 minus (Hill) Bernh., Centaurea Cyanus L., Cytisus scoparius 

 (L.) Link., Panicum capillare L., Veronica arvensis L., Marru- 

 bium vulgar e L., Nepeta hederacea (L.) Trev. and Lychnis Cor- 

 onaria (L.) Desv. 



