DIPETALOUS EXOGENS—TFIE PETAL MOSTLY TINCT.
Ranunculus bulbasus. Buttercup, bulbous crowfoot, (p). Thie foreigner is extenaively naturalized in graaa plota, meadowa, and low ground paaturea along our atreama, where it ia regarded aa a nuisance by the farmers. The fleahy bulb is highly acrid, and the plant when once intro duced ia difficult to aubdue. The most effective remedy yet found ie to get the plant cloaely depastured in early apring by atock, eapecially aheep. Another perennial apeciea, viz: Rairis, or tall crow oot, ia naturalized in New England, and ia as obn alone aa its congener.
Delphinium consolida. Field Larkapur, (a.) Thia intro duced plant hae strayed from the garden in many placea, and ia an unwelcome intruder in grain &Ida and other cultivated grounds. This and a kindred speciea (D. adjacis) have become so common in gardens that some attention is requisite to prevent them from trespaasing on the farme. Planta which have matured their seeds in the garden ahould never ba e:rried to the barnyard nor per mitted to mingle with farm manures, otherwise the field& will be epeedily infeated with worthleaa and pernicioue weeda. A elight ing after the removal of the crops from the &hie will favor the germination of the seeda, which will be destroyed by the regular plowing of the field.
Papaver eubium. Field Poppy, (a.) Thia foreigner haa found ita way into some diatricts, and, if unattended to, may become a troubleaome weed, as it and the Corn Poppy (P. rho( as) are in Europe. A aimilar remark ia applicable to the Prickly Mexican Poppy (Argenione mexicana) auother kindr d weed which has been intro duced Thle pl nt ahould be extirpated by hand-weeding before the ripening orthe eeed. Bata ly the p ickly poppy became a obnoxioue as to be called infer', al figs.
camelina sativa. Wild Flax, gold of pleasure, (a.) A natur lized foreigner, and, where neglected, becoming a gr at nuisance—tormerly suppoi.ed by the aimple and creduloua to be a aort or tranamuted or degenerate flax. It has been subdued by annual plowing, so managed aa ta allow the seeda to vegetate, and thue deatroy the young plants beforo the aeeds on them are matured.
Capsella bursa-pastoris. Shepherd's purse, (a.) A. worthleaa little intruder from Europe, hut the valuable: grames will generally choke out auch small weeda.
Raphanus raphanistrum. Wild Radish, jointed char lock, (a.) A naturalized weed, becomiog a nuisance in the Northern States. It has already i avaded New Englund aod Pennsylvania, and ie tendiug westward. The seeds are coutained in a joiuted pod, and are thus .protected from the severity of frost and concealed from birds until liberated by the procees of decay of the pod.
Hypericum perforatum. St. John's Wort, (p.) A foreign weed, formerly supposed to cause cutaneous ulcers in white cows aud on horses with white feet and noses; but, the disease disappenring, that notioo seenis to have become obsolete.
Agrostenama githago. Cockle, rose campirm, (b.) A well kuown fore gn weed infesting wheat fields. The black-coated seeds, when abundant and ground with wheat are iujuriotte to the appearauce of the flour. The root of this plaot should be cut below the surface with a chieel fastened to a long haodle and wielded hy children. If this s neglected in the early part of the season, the fields should be scarified humediately after the removal of the crops. to favor the germination of the seed, and ultimate destruction by fall ploughing snd the frost. The seed obtained from the screening of cereals should not be thrown out upon the manure heap, but fed to fowls, and the refuse left by them should be burued the next day. Abut.lo, aricen me. Indian Mallow, velvet leaf, (a.) This foreiguer, hitherto regarded ae a worthless end troublesome intender in Indifin corn nettle, potato patches, and. other cultivated lots. has beeu recently announced ttogether with Hibiscus moschatos a malvaceous peren oial, native of our maratime inarshes,) as yielding a fihr,eis hark imitable for textile purposes, similar to the Jute of commerce. obtained from Asiatic species of cor chorus, and employed in the manufacture of gunny hags. The economical valne of this material, which is termed Americau Jute, must be ascertained by experience.