Fig 194. [Fire-weed. Erechtites hieracifolia] (L.) Raf.

Fire-weed. Erechtites hieracifolia (L.) Raf. Achenes brown, linear, 2.2–2.8 mm. long, flattened, straight or curved, having ten vertical ribs between which are minute white oppressed hairs, the extremities truncate, wider than the narrow portion beneath, the apex white with a tubercle projecting from the center of a minute cup. Native to this country. Not of much importance.

Annual Fleabane. Erigeron annuus (L.) Pers. Flowers white; achenes smooth, shining, brownish white, translucent, flattened, obovate or oblong, .7-.9 mm. long, bearing at the apex a whorl of very small diverging bristles, the longest ones having been rubbed off. Faint traces of a few oppressed hairs may be seen under a good lens. Native to this country and a very prominent weed in thin meadows.

Fig 195. [Horse-weed. Erigeron Canadensis] L. Leptilon Canadense (L.) Britton.

Horse-weed. Erigeron Canadensis L. Leptilon Canadense (L.) Britton. Achenes oblong, dull cream color, much flattened, 1–1.3 mm. long, shining, smooth or containing a few minute oppressed bristles, apex truncate, bearing a whorl of bristles, the longest having been rubbed off. Native of this country. Compare the above description with that of Erigeron annuus. Common in waste places.