Golden Mouse or Orange-Ear Hawkweed. Devil's Paint-Brush. Hieracium aurantiacum. Flowers orange yellow; achenes jet black, oblong, straight or curved, apex truncate, base abruptly tapering, cylindrical, the sides bearing 10 narrow, vertical ridges. Introduced from Europe. In Eastern New York and Western Massachusetts meadows abound in large areas of this vile weed, 1.8–2.2 mm. long.

Fig 201. [Mouse-Ear Hawkweed. Hieracium Pilosella] L.

Mouse-Ear Hawkweed. Hieracium Pilosella L. Flowers yellow; achenes jet black, oblong, straight or curved, apex truncate, base abruptly pointed, cylindrical or narrowly oval, the sides bearing 10 narrow vertical ridges. Introduced from Europe. The achenes very closely resemble those of the orange hawkweed. It doesn't matter much, for the habits are the same, and one is about as noxious as the other. Introduced from Europe.

Fig 202. [Elecampane. Inula Helenium] L.

Elecampane. Inula Helenium L. Flowers yellow; achenes light brown, straight or curved, linear, flattened, 4–5 mm. long, 4 sided with 5–8 obscure vertical ridges on each side, apex concave, the margin bearing a circle of short stiff bristles, the remains of longer ones. Introduced from Europe. Not common.