92 Maine Agricultural Experiment Station. 1920. 



List of Noxious Weed Seeds Arranged Alphabetically by Sci- 

 entific Names. (Grays Manual, iyth Edition, 1908). 



Agrostemma githago. Corn Cockle. 



Ambrosia artemisiifolia. Common Ragweed. 



Ambrosia psilostachya. Perennial Ragweed. 



Ambrosia trifida. Great Ragweed. 



Avena fatua. Wild Oats. 



Brassica arvensis. Charlock. 



Brassica campestris. Rutabaga. 



Brassica juncea. Indian Mustard. 



Brassica nigra. Black Mustard. 



Camelina microcarpa. Small-seeded False Flax. 



Camelina sativa. False Flax. 



Chrysanthemum leucanthemum. Ox-eye Daisy. 



Cichorium intybus. Chicory. 



Cirsium arvense. Canada Thistle. 



Conringia orientalis. Hare's-Ear Mustard. 



Convolvulus arvensis. Field Bindweed. 



Cuscuta species. Clover Dodder. 



Daucus carota. Wild Carrot. 



Echium vulgare. Blueweed. 



Erigeron annuus. Sweet scabious. 



Erigeron ramosus. Daisy Fleabane. 



Hieracium aurantiacum. Orange hawk weed. 



Hieracium pratense. King devil weed. 



Lappula echinta. Blue Bur or Stickseed. 



Lychnis alba. White champion. 



Lolium temulentum. Common Darnel. 



Neslia paniculata. Ball Mustard. 



Plantago lanceolata. Ribgrass. 



Raphanus raphanistrum. Wild Radish. 



Rumex conglomeratus. Clustered Dock. 



Rumex crispus. Yellow dock. 



Rumex obtusifolius. Bitter Dock. 



Saponaria vaccaria. Cow-herb. 



Silene Latifolia. Bladder Champion. 



Silene notciflora. Night-flowering Catchfly. 



Sisymbrium altissimum. Tumble Mustard. 



Sonchus asper. Spiny-leaved or Prickly Sow Thistle. 



Sonchus arvensis. Field (Perennial) Sow Thistle. 



Sonchus oleraceus. Common (Annual) Sow Thistle. 



Thlaspi arvense. Field Penny Cress. 



