NaBaLus. LXXV. COMPOSITE. 361 
copious, capillary, brownish, 2-rowed, persistent ; achenia not beaked, 
smooth, striate-—H rect herbs, with a thick, tuberous, bitter root. Hds. 
5—18-flowered, not yellow, although often straw-colored. 
§ Heads pendulous, glabrous. Leaves very variable in the same species. 
1. N. atrpus. Hook. (Harpalyce. Don. Prenanthes. Linn.) Lion’s-foot. 
White Lettuce —St. smooth and somewhat glaucous, corymbose-panicu- 
late above; radical lvs. angular-hastate, often more or less deeply lobed; stem 
Wws. roundish-ovate, dentate, petioled, the lobes or leaves obtuse ; Ads. pendulous; 
invol. of 8 scales, J—12-flowered—A conspicuous and not inelegant plant, in 
moist woods and shades, N. Eng. to Iowa, and Can.to Car. Stem stout, 2—4f 
high, purplish, often deeply soin spots. ‘The leaves are very variable, the low- 
est 3—5-lobed or only hastate, the uppermost lanceolate, and between these the 
intermediate forms, hastate and ovate, all irregularly toothed. Scales purplish. 
Corollas whitish. Pappus brown. Some of the varieties have the reputation 
of curing the rattlesnake’s bite. Aug. 
B. serpentaria. (Prenanthes serpentaria. P.) Radical lvs. palmate-sinuate, 
those of the stem on long petioles, with the middle segment 3-parted ; upper ls. 
lanceolate. 
2. N. attissimus. Hook. (Harpalyce. Don. Prenanthes. Linn.) Tall 
Nabalus—St. smooth, slender, straight, paniculate above; lvs. more or 
less deeply 3—5-cleft, all petiolate, angular, denticulate and rough-edged, the 
lobes acuminate; Ads. pendulous; invol. of 5 scales and about 5-flowered.—A 
tall species, with cylindric, yellowish, nodding flowers, found in woods, New- 
foundiand to N. Eng. and Ky. Stem 3—5f high, bearing a narrow and elon- 
gated panicle. Heads in short, axillary 4nd terminal racemes. Aug. 
8. ovatus. Riddell. Cauline lvs: nearly all ovate, on slender petioles. 
y. cordatus. (Prenanthes cordata. Willd.) Lvs. cordate, on slender petioles. 
d. deltoidea, (Prenanthes deltoidea. Ell.) Lvs. deltoid, acuminate, acutely 
denticulate. 
e. dissectus. T. & G. Lwvs. mostly 3-parted or divided, segments entire or deep- 
ly cleft into 2 or 3 narrow lobes. 
3. N. Fraseri. DC. (P.rubicaulis. Ph.) Fraser’s Nabalus. 
St. smooth, corymbosely paniculate above ; jvs. subscabrous, mostly del- 
toid, often pinnately lobed, on winged petioles, the upper ones lanceolate, sub- 
sessile ; znvol. of about 8 scales, 8—12-flowered ; pappus straw-colored.—2 In 
dry, hard soils, Conn. and Mid. States (rare) to Flor. Stem 2—4f high, with 
paniculate branches. The leaves are as variable as in our other species, some- 
times all being lanceolate, with only irregular indentures instead of lobes. 
Heads drooping, with purplish scales and cream-colored corollas. It is most effec- 
tually distinguished from N. albus by the more lively color of the pappus. Aug. 
4. N. nanus. DC. (P. alba. 8. nana. Bw.) 
St. simple, low, smooth; Jvs. on slender petioles, the lowest variously 
lobed or parted, the others successively deltoid-hastate, ovate and lanceolate; 
Ads. in small, axillary and terminal clusters, forming a slender, racemose pani- 
cle; invol. greenish-purple, of about 8 scales and 10—12 flowers; pappus dingy 
white——This form of Nabalusis common on the White Mts., N. H.! where 
we find it with the same sportive character of foliage as appears in other species. 
Stem 5—10' high. Heads with whitish flowers. Aug. 
5. N. Boottn. DC. Boott’s Nabalus. 
St. simple, dwarf; lower lvs. subcordate or hastate-cordate, obtuse, the 
middle ones oblong, the upper lanceolate, mostly entire; Ads. slightly nodding; 
invol. 10—18-flowered, of 10—15 obtuse, proper scales calyculate at base with 
lax, linear scales half their length; pappus straw-color—White Mts., N. H., 
Whiteface Mt., Essex Co. N. Y. Macrae. N. Am. F1.,II., 482. Stem 5—8’ high, 
bearing the heads in asubsimple raceme. Flowers whitish and odorous. 
6. N. vircatus. DC. (Prenanthes. Mz. Sonchus. Desf. Harpalyce. oP. 
Glabrous and glaucous, slender and simple ; lower lvs. sinuate-pinnatifid, 
petiolate, middle ones toothed, sessile, wpper entire, partly clasping, gradually 
