. The Indiana weed book. Weeds. WEEDS OP THE THISTLE FAMILY. 163. 120. Artemisia biennis Willd. Wormwood. (A. or B. N. 2.) Stem erect, very leafy, branched, 1-4 feet high; leaves alternate, once or twice divided into linear or oblong, toothed lobes. Heads small, numerous, sessile in dense axillary clusters or short spikes; involucre cup-shaped, its bracts green with dry margins; receptacle flat, naked; flowers tubular, greenish. Achenes small, slender; pappus none. (Fig. 123.) Common along dry gravelly banks of streams, roadsides and waste places about cities and towns in southern In- diana; l
. The Indiana weed book. Weeds. WEEDS OP THE THISTLE FAMILY. 163. 120. Artemisia biennis Willd. Wormwood. (A. or B. N. 2.) Stem erect, very leafy, branched, 1-4 feet high; leaves alternate, once or twice divided into linear or oblong, toothed lobes. Heads small, numerous, sessile in dense axillary clusters or short spikes; involucre cup-shaped, its bracts green with dry margins; receptacle flat, naked; flowers tubular, greenish. Achenes small, slender; pappus none. (Fig. 123.) Common along dry gravelly banks of streams, roadsides and waste places about cities and towns in southern In- diana; less so1 northward. July-Sept. It has a disagreeable, penetrating odor and a bitter taste. With us it is the most common 6f 6 or 7 species of so- called wormwoods, all of which are n,.>r, ,-i,. â¢>â â¢.:.!.«:^ieaow- homely, weed-like plants. Remedies: era above. (After Bntton and Brown.) pulling Or grubbing; mowing Several times before the heads mature. 130. Erechtites hieracifolla L. Fireweed. Pilewort. (A. N. 3.) Stem erect, branching, grooved, succulent, 1-8 feet high; leaves thin, alternate, lanceolate or narrowly ovate, cut-toothed, 2-8 inches long. Heads rather large, in an open panicle at the ends of the branches; in- volucre cylindric, swollen at base, its bracts linear in one row; receptacle concave, naked; flowers white, all tubular. Achene linear-oblong, grooved; pappus a large tuft of smooth white hairs. Frequent in rich moist soil along borders of woods and thickets. Very common in newly cleared ground, especially where brush-piles have been burned. July-Sept. In a deadening caused by fire this weed is the first plant to spring up, often taking complete posses- sion of the soil for a year or two, then giving way to more hardy species. The foliage is often attacked by mildews and a small Carabid beetle {Anisodactylus terminatus Say) is sometimes found by scores feeding upon its ripening seeds. An ointment made from the essential oil is said to be
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1912
