APETALOUS EXOGENS—COROLLA USUALLY WANTING.
Phytotacca decandra. Poke-weed, pigeonberry, (p.) This stout native is everywhere frequent in rich soil. The turtions, or tender radical shoots, in the spring of the year afford a popular substitute for those of asparagus; never theless, the plant is regarded and treated as a weed by all neat farmers.
Chenopockum album. Lamb's Quarter, goose-foot, (a.) This coarse and rather homely weed has become common and quite troublesome in gardens.
Amaranthus hybridus. Pig-weed, (a.) A repulsive looking weed, an annoyance in gardens and cultivated lots in the lattertpart of summer. Ill permitted to mature its seed it soon becomes very abundant.
Amaran thus ems White Amaranth, (a.) Another coarse weed in the farm-yards of the Middle States. Al though supposed by some to he a native of Pennsylvania, it has a foreign habit and appearance, and probably came from tropical America.
Amarantus spinosus. Thorny Amaranth, (a.) This odious, bushy weed, supposed to be a native of tropical is common in unfrequented stieets and outskirts of our seaport towns, and is a vile nuisance wherever it appears. It can not be too sedulously guarded against. Hoeing on its first appearance is often effectual for its destruction.
Polyg mum Pennsylvanicum. Knot-weed, (a.) A com mon worthless weed on road sides and in waste places about neglected farm-houses.
PolygonuM pucicaria. Lady's Tbnmb, spotted knot weed, (a.) Resembles the preceding, and rather smaller, but equally worthless wherever introduced.
Poiygon um hydropiper. Water Pepper, smart-weed,(a.) A naturalized weed as worthless as most of the species are, though this is even more obnoxious than the preceding, being a highly acrid plant, and sometimes causing obsti nate ulcerative inflammation when incautiously applied to the skin.
Polygonum sagittatum. Arrow-leaved Tear-thumb, (a.) Mowers and haymakers are apt to he familiar with this annoying native weed in the second crop of swampy meaaows. Another kindred species; viz: ParVolium, or Halbert-leaved Tear-thumb, is an accompanying and equally obnoxious weed. Ditching and draining are the remedies for the evil. Several other Polygonum . occur, equally worthless, but rather less offensive.
RUMeX crispus. Sour Dock, curled dock, (p.) An un sightly and objectionable foreign weed, too extensively known.
Rumex oblusifolius. Bitter Dock, broad-leaved dock, (p.) 'I his foreign species is now more objectionable than the preceding, but it is not quite so prevalent. There is also a little foreign species, well known for its acidity, the R. acelosella, Field or Sheep Sorrel, (p.,) often so abundant as to be a n ,is•ce on the farm. Improving the land, especially by adequate dress mg of lime, is believed to be the best mode of expelling this and many other obnoxious weeds.
Euphorbia hypericifolia . Eye-bright, spnrge, (a.) This is a common weed in dry pasture fields, especially in thin ntsh sandy soils, and has been suspected (how justly has not been determined) as the cause of the disagreeable salivation or slobbering with which horses are sometimes affected in the latter part of summer. There is another natty, prostrate, bunching little species, E. niaculata, often abundant in Indian cornfields and other cultivated grounds.
Urtica dtiotica. Nettle, stinging nettle, (p.) An exotic rather frequent in waste places about farm houses, well known to those who have come in contact with them.