148” SYNGENESIA. SUPERFLUA. 
hemispherical calix pubescent; stem 3 to 5-flowered, pe- 
duncles axillar and termina]. Han. On the plains of the 
‘Missouri, (around Fort Mandan, abundant ). Flowering in 
August. Stem 12 to 18 inches high, simple, smooth be- 
low; lower leaves of the stem much attenuated below, 3 or 
lines wide, smooth; peduncles about 2 inches long, pu- 
bescent; flower the size of a Daisy, pale blue; rays very 
numerous. Seeds smooth; pappus double, exterior whitish, 
interior short, simply pilose and rufescent. 
7. E.2 bellidifoliwm. Canescently hirsute; radical leaves 
obovate, subserrate, stem leaves remote, oblong-ovate, 
amplexicaule, entire; stem 3 to 5-flowered; radii nearly 
twice the h of the hemispherical calix. Has. From 
Canada to Virginia, and on the mountains of Curolina; 
common.—Perennial. Flower usually large, blueish. Pap- 
pus simple, of about 30 rays. Nearly allied to 4ster. 3. 
guercifolium. --. 9, purpureum. 10. E.? compositum, Px. 
Some other genus? 
§ 11. Stems paniculate or branched. 
11. philadeiphicum. Pappus double. 12. strigosum. 
aemeeaeeb le. 13. heterephyllum. Rays without pap- 
pus! pappus of the hermaphrodite florets double, the inner 
of about 15 rays. 14. hyssopifolium. 15. longifolium. What 
genus? . 
. *Canorvus. + Calix oblong, in fruit reflected. 
Rays of the flower very numerous and minute. 
Recefitacie naked. Pappus pilose, simple. 
Annual plants, divaricately branched; flowers very co- 
is and inconspicuous; radii composed of more than a 
nple series, more numerous than the florets of the disk, 
er the manner of Co and Gn ‘um; hermaphbro- 
persistent, the minute exterior pappus of Erigeron want- 
i ; seed oblong, compressed, Pretped. Tube of the dis- 
oar florets inflated as in many species of Erigeron. 
_ . + 16. .sanadense. Stem erect, hirsutely pilose, and much 
‘branched, branches paniculate; leaves linear-lanceolate, 
ciliate; radical toothed. Han. A pine weed, ex- 
er Pi ous Erect, low and slender; stem smooth; 
‘and divaricate; 
a = From sevees; Comment oul 
_ of the most common of all weeds i 
+ C. canadensis, being one 
florets mostly 4-cleft; pappus pilose, ot 12 to 15 rays, . 
— peduncles 
