11 L. pycnostachya Mx. Simple, more or less hirsute, very leafy; Ivs. rigid, ascending, straight, lower ones long, lanceolate, veined, obtuse, upper short, narrow-linear ; spike dense and thick, long and bracted below; hds. numerous, cylindrical, sessile, 5-flowered; scales appressed, with acute, scarious and colored squarrous tips. - Prairies, 111. to Tex. A stout species, distinguished from L. spicata, chiefly by its acute, squarrous scales, and few-flowered heads. St. 3 to 5f high. Spikes cylindrical, 10 to 20' long. Aug. Varies with stem and invol. nearly glabrous (L. brachystachya Nutt.)
12 L. scariosa L. Gay Feather. Scabrous-pubescent; Ivs. lanceolate, lower on long petioles, upper linear and much smaller; hds. remotelyracemed, 20 to40 flowered, globous hemispherical; scales obovate, very obtuse, purplish; fls. numerous; pappus scabrous. - A beautiful plant, 4 to 5f high, in woods and sandy fields, Can., Mass. (Ricard) to Ga. and La. St. rather stout, whitish above. Lvs. numerous, entire, lower 3 to 9' long, upper 1 to 3' by 1 to 3 ', rough-edged. Hds. 5 to 20, 1' diam., in a long raceme, each 20 to 40-flowered. Cor. purple. Aug. †
13 L. spicata Willd. Lvs. lance-linear, smoothish, punctate, ciliate, lower ones narrowed at base ; hds. in along, terminal spike, sessik ; scales of the invol. ob'ong, obtuse; fls. about 8; pappus scabrous-plumous. - Native from N. J. and Mich, to Fla. and La. Abundant in prairies. A beautiful species, often cultivated. St.
2 to 5f high. Hds. numerous, with bright purple fls. Aug. † - Varies with smaller, 5 to 7-flowered heads. (L. resinosa Nutt.)
14 L. graminifolia Willd. Glabrous or with scattered hairs; st. slender and simple; lvs. linear, 1-veined; hds. 7 to 12-flowered, mostly pedicellate, spikes or racemes sometimes paniculate below; invol. acute at base; scales many (12 to 18), obovate-spatulate, very obtuse, appressed, outer row shorter; ach. hairy. - N. J. to Ga. and Ala. St 2 to 3f high. The lower lvs. are lance-linear, 3 to 4" wide, upper subulate. Hds. generally pedicellate, pedicels 4 to 12" long. Fr. hairy, shorter than the scabrous pappus. Sept., Oct.
ß. dubia. Inflorescence sometimes compound below, or partly paniculate hds. on short pedicels, 1 to 10-flowered; scales somewhat narrower, ciliate. -Pine barrens, N. J. to Ga. (Miss Keen.) Approaches L. spicata. (L. dubia Bart.)
15 L. pilosa Willd. St. simple, pubescent; lvs. linear, pilous-ciliatc; hds. loosely racerned ; scales linear-oblong, rather obtuse; peduncles bracteolate. - In pine barrens and sandy fields, N. J. to Car. (Pursh.) Seven-mile Mt., Ya. (Read.) Very rare and obscure.
16 L. heterophylla R. Br. St. simple, glabrous; Ivs. lanceolate, smooth and glabrous; upper linear-lanceolate, many times smaller; hds. spicate, very short-pedunculate ; invol. subsquarrous, scales lanceolate, acute, naked (not ciliate). - S. Car. and Ga. (Bartram.) A doubtful species, variety of L. scariosa?
8. KUH'NIA, L. (To Dr. Adam Kuhn, of Pennsylvania, a pupil of Linnaeus.) Heads 10 to 25-flowered, ; scales of the involucre lanceolate, loosely imbricated ; receptacle naked ; corolla slender, 5-toothed ; pappus in a single series, plumous; achenia cylindrical, striate, pubescent. - Ц Herb with alternate, resinous-dotted Ivs., and corymbed hds. of pale yellow florets.
K. eupatoroides L. Lvs. lanceolate and lance-ovate, varying to lance-linear, usually serrate, petiolate, sprinkled with resinous dots, especially beneath; corymb few or many-flowered. - Shady soils, N. J., Penn. and Iowa (Cousens), to Fla. and La Sts. 2 to 3f high. Lvs. thin, 1 to 4' long, often coarsely and unevenly toothed, lower 3-veined, upper 1-veined, and very small. Hds. few, terminal. Pappus very plumous, white or tawny. Aug., Sept.
ß. Lvs. lauce-linear, mostly entire, sessile; pan. spreading, many-flowered; fls. and fr. unchanged. - With the other varieties (K. Critonia Willd.)
9. BRICKEL'LIA, Ell. (To Dr. Brkkell, of Savannah.) Heads many-flowered, £ 5 scales imbricated, lanceolate or linear, striate; receptacle naked, flat; corolla tube slightly expanded above, 5-toothed; branches of the style clavate; fr. 10-striatc, contracted above; pappus setaceous, in one series. - Ц. Herbs with tripli-veined leaves and large heads of purple florets in corymbs.
B. cordifolia Ell. Pubescent; lvs. all opposite, triangular, truncate or cordate at base, crenate, petiolate; corymbs dense, few-flowered; hds. 30 to 40-flowered; scales obtuse, conspicuously striate, the inner as long as the purple pappus and corollas. - W. Ga. (Pond) and Fla. A plant of fine appearance, 2 to 4f high. Lvs. large, sprinkled with shining dots beneath, 3-veined, the lateral veins marginal just at the base. Sds. brown, longer than the purple pappus. Aug., Sept.
10. EUPATORIUM, Tourn. Boneset. (To Bupator, King of Pon-tus, who first used the plant in medicine.) Flowers all tubular, $ 5 involucre imbricate, oblong; style much exserted, deeply cleft; anthers included ; receptacle naked, flat; pappus capillary, simple, scabrous; achenia 5-angled. - Ц Herbs, generally with opposite, simple lvs. and corymbous hds. Fls. of the cyanic series, that is white, blue, red, etc., never yellow.
§ Leaves mostly alternate, pinnately dissected. Heads paniculate.........
Nos. 1, 2
§ Leaves mostly opposite or verliciliate,- pinnately dissected.........
- undivided. (*)
* Scales imbricated in several rows, the outer gradually shorter, (a)
a Flowers bluish. Leaves opposite. Scales strongly striate..........
a Flowers purplish. Lvs. whorled. Scales streaked and flesh colored..
...Nos. 5- 7
a Flowers white, - 5 only in each head. Leaves subsessile. (b)
b Leaves acute at base. Scales with acute white points........
Nos. 8, 9
b Leaves acute at base. Scales obtuse , short, downy................
Nos. 10 - 13
b Leaves obtuse , roundish or trucate at the base.............
..Nos .14 - 16
a Flowers white, 7 to 15 in each head. Leaves various.........
..Nos .17 - 20
* Scales all of equal length, in about 1 row. Leaves petiolate........
Nos. 21 - 23
1 E. fceniculaceum Willd. Dog Fennel. Very branching nearly glabrous; Ivs. all alternate, the lower compoundly pinnate with linear filiform segments, the upper setaceous, simple, fascicled; hds. small, very numerous, 3 to 5-flowered, on short pedicels; scales 8 to 10, mucronate. - A common weed, in fields and damp soils, Va. to Fla. St. 3 to 10f high, bearing innumerable fine cut lvs. and a compound pyramidal panicle of innumerable hds. Fls. yellowish-white, little more than 1" long. Lvs. often channeled on the upper side. Sept., Oct.
2 E. coronopifdlium Willd. Much branched, pubescent; lvs. mostly alternate (the lower opposite), the lower twice pinnatifid with lance-linear lobes and segments ; upper lvs. linear, fascicled; hds. small, very numerous, 5-flowered; scales 10, with scarious margins and cuspidate points. - In dry, thin soils, N. Car., Ga. to Fla., common. St. 3 to 5f high. Lvs. and fls. immensely numerous, as in No. 1. Fls. white, about 2" long. Paniclo often 2f long. Sept., Oct. - Distinct from No. 1?