COMPOSITE FAMILY. -/l7 



69. HIERACIUM, HAWKWEED (which the name means in Greek). 

 Wild plants of tlie country, in dry ground : II. summer and autumn ^/ 



H. Canadense, chiefly N., has simple stems l-3 high and leafy up to 

 the corymbed summit ; laiiceolate <>r oblong acute, leaves with a few coarse teeth, 

 and rather large licads with loose imbricated involucre. 



H. paniculatum, in woods, has slender and branching leafy stems 2 -3 

 high, lanceolate scarcely toothed leaves, a loose panicle of very small 12-20- 

 flowered heads on slender peduncles, the involucre very simple. 



H. SCabrum, in more open grounds, is roughish-hairy, with rather stout 

 simple stem (2 -3 high), bearing obovate or oval nearly entire leaves, and 

 a narrow panicle of many small heads, the 40 - 50-flowered involucre and stiff 

 peduncles thickly beset with dark glandular bristles ; akenes not tapering. 



H. longipiium, in prairies W., is so named from the exceedingly long 

 (often 1') straight bristly hairs of the stem ; has narrow oblong entire leaves, 

 panicle and 20 - 30-flowered involucre between the last and the next, and akenes 

 spindle-shaped.' 



H. Gronbvii, common in sterile soil, with slender stems leafy and very 

 hairy below, leaves oblong or obovate, panicle narrow, small heads, slender 

 peduncles and 20 - 30-flowered involucre sparingly glandular-bristly, anil spindle- 

 shaped akenes with very tapering summit. 



H. venbsum, RATTLESNAKE- WEED ; common in dry sandy ground, very 

 smooth or with a few hairs ; with leaves chiefly at the root, obovate or oblong, 

 thin, purple-tinged beneath and purple- veiny above ; scape slender, l-2 high, 

 forking into 2-7 slender peduncles bearing small about 20-flowered heads; 

 akenes linear, not tapering. 



70. NABALUS, RATTLESNAKE-ROOT. (Name from Greek word 

 for a harp, alluding probably to the lyrate leaves of sonic species.) Roots 

 tuberous or spindle-shaped, bitter. Fl. late summer and autumn. 2/ 



* Peduncles and 5 \1-flowered heads smooth : leaves very variable. 



N. altissimus, TALL R. or WHITE-LETTUCE. Rich woods N., 3 - 6 

 high, with long and narrow leafy panicle, petiolcd leaves inclined to be ovate- 

 triangular ; heads 5 6-flowered ; pappus dirty white. 



W. albUS, COMMON WHITE-LETTITE, in open woods, chiefly N. and W., 

 is glaucous, with more corymbed panicles of 8- 12-flowercd heads, usually more 

 cut or divided leaves, and cinnamon-colored pappus. 



N. Fraseri, LION'S-FOOT, or GALL-OF-THE-EARTH, is commonest in dry 

 soil E. and S., l-4 high, with narrow-corymbed panicles of 8- 12-flowered 

 heads, and pappus dull straw-color. 



* * Peduncles and 12 - 40-Jloivered heads lairy. Chiefly West, on / l:iin<:, $-c. 



N. racembsus has smooth wand-like stem '2 - 5 high, lance-oblong 

 slightly toothed leaves, the upper ones partly clasping, and a narrow >piked 

 panicle of about 12-flowered heads. 



N. asper is similar, but rough-pubescent, the 12- 14-fiowered beads mostly 

 erect and larger. 



N. crepedinius, only W., is smoother, with stout stem 5 - 8 high, 

 wide corymbed panicles of 20 - 40-flowercd heads, brown pappus, and broad 

 leaves G' - 12' long on winged petioles. 



71. PYRRHOPAPPTJS, FALSE DANDELION. (Nam,- means in 

 Greek fame-colored jia/ipiis ; this and the leafy steins obviously distinguish 

 this genus from the next.) @ 



P. CaroliniantlS, in sandy fields from Maryland S. : l-2 high, with 

 oblong or lanceolate leaves often pinnatirid or cut, the upper partly da -ping: 

 n. spring and summer. 



72. TARAXACUM, DANDELION. (Greek name referring to mcdici 

 nal properties of the root. ) ? y. 



T. Dens-lebnis, COMMON D., in all fields, &(., from spring to autumn. 

 Inner involucre closes after blossoming till tlie akenes mature and tin 1 beak 



