GENUS 22. CHICORY FAMILY. 329 
1. Hieracium murérum L. Wall Hawk- 
: weed. Fig. 4094. 
Hieracium murorum L. Sp. Pl. 802. 1753. 
Stem pubescent or glabrate, simple, or with 1 or 
2 branches, 1°-23° high. Basal leaves thin, ovate or 
oblong, obtuse or acute, cordate or truncate at the 
- base, or abruptly narrowed into petioles, coarsely 
dentate or laciniate, at least near the base, 2’-4’ long, 
1-2’ wide, the petioles villous; stem leaves 1 or 2, 
short-petioled or sessile, sometimes none; heads 
2-several, corymbose, about 1’ broad; peduncles as- 
cending, usually glandular; involucre 4’—-5” high, its 
bracts linear-lanceolate, acute, glandular-pubescent, 
imbricated in 2 or 3 series; achenes columnar, trun- 
cate; pappus of slender nearly white bristles. 
Woodlands near Brooklyn, N. Y., Northampton, 
Mass., and about Quebec. Adventive or fugitive from : 
Europe. French or golden lungwort. June—Aug. ; j 
2. Hieracium vulgatum Fries. Hawkweed. 
Fig. 4095. 
H. molle Pursh, Fl. Am. Sept. 503. 1814. Not Jacq. 1774. 
Hi. vulgatum Fries, Fl. Hall. 128. 1817-18. 
Similar to the preceding species, sometimes taller 
and slightly glaucous; stem 2-5-leaved, pubescent or 
glabrate. Basal leaves oblong or lanceolate, acute at both 
ends, or some of them obtuse at the apex, coarsely den- 
tate or denticulate, petioled, 2’-5’ long, 3-13’ wide, often 
mottled; stem leaves similar, short-petioled or sessile; 
petioles more or less pubescent; heads several, corym- 
bose, smaller than those of H. murorum or as large; 
peduncles mostly glandular, straight; bracts of the in- 
volucre imbricated in 2 or 3 series, linear, acuminate, 
mostly glandular; achenes columnar, truncate; pappus 
copious. 
Labrador and Newfoundland to Quebec, and in southern 
‘ | New York and New Jersey. Naturalized from Europe. 
Also in Greenland, northern Europe and Asia. July—Sept. 
3. Hieracium canadénse Michx. Canada 
Hawkweed. Fig. 4096. 
H. canadense Michx. Fl. Bor. Am. 2: 86. 1803. 
Stem erect, firm, glabrate or pubescent, leafy, 
1°-5° high. Leaves numerous, ovate, oblong- 
lanceolate, ovate-oblong, or lanceolate, acute or 
-acuminate at the apex, rounded, sessile, and, at 
least the upper ones, clasping at the base, 1’-3’ 
long, 3-12” wide, serrate or incised, the mar- 
gins sometimes ciliolate, glabrous or pubescent. 
beneath, the lowest somewhat spatulate and 
petioled; no tuft of basal leaves at flowering 
time; heads usually numerous, corymbose- 
paniculate, about 1’ broad; involucre about 6” 
high, pubescent or puberulent, its bracts imbri- 
cated in 2-3 series, the outer spreading; flowers 
yellow; achenes columnar, truncate; pappus 
copious, brown. 
In dry woods and thickets, Newfoundland and 
Nova Scotia to Ontario, British Columbia, New 
Jersey, Indiana, Michigan, South Dakota and 
Oregon. July-Sept. High dandelion. 
