Obder to.— composite. 417 



linear and entire. Cor. Jilated at mouth, witli short, obtuse lobea, white. Aug.w- 

 Ocl. (E. glauoe30ens (3. leucolepig DC.) 



10 E. hyssopifolium L. Lvs. opposite, often vertioillate, linewr-lamceolate, obr 

 sourely tripli-veined, punctate, lower ones suiserrate, upper ones entire ; scales short, 

 oval, grayish pubescent, very obtuse. — A more delicate species, smooth, or minutely 

 pubescent, in dry holia, Mass. to Iowa and La. St. about 2f high, branching 

 into a spreading corymb. Hds. 5-flowered, very small, in dense clusters, and 3" 

 long, scales haJf as long. Aug., Sept. /3. linearifolium is more pubescent, with 

 the lower lvs. serrate. — South. 



11 E. cuneifolium Willd. Pubescent ; lvs. smaU, glaucous both sides, broadly 

 oilanceolate or oblong, obtuse at apex, acute at the subsessile base, shghtly serrate 

 above the middle; hds. small, in a loose corymb, 5-flowered; scales (2" long) 

 soft-villous, obtuse, much shorter than the fls. — Rich shady soils, S. Car., Ga. to 

 Ala. St. 1 to 2f high. Lvs. 8 to 18" long. Fls. white. Aug., Sept. 



12 E. parviflorum Ell. Soft-pnberulent, diffusely branched ; lvs. mostly oppo- 

 site (in 3s below), lanceolate, acute, acuCL-iy serrate above the middle, entire be- 

 low, and tapering to the sessile base, 3-veined ; hds. small and crowded ; scales 

 pubescent, glandular (like the 3 preceding), ovier very sTwrt, inner linear, obtuse. — 

 Low grounds, Ta. to Fla. and La. Height 1 to 3f. Pan. compound, loose. Lvs. 

 1 to 3' long, the upper scattered. Hds. about 2'' long, scales 1^". Aug. — Oct. 



13 E. altissimum L. St. pubescent tomentous, tall, corymbous at the summit ; 

 lvs. lanceolate, remotely and acutely serrate above the middle, pubescent, tapering 

 to each end, subsessile, conspicuously 3-veined ; hds. 5-fiowered ; scales 8 to 12, 

 elliptical, obtuse, pubescent. — "Woods and sandy soils, Penn. and W. States (Plum- 

 mer). St. round, striate, 3 to 7f high. Lvs. 3 to 4' long, much resembling those 

 of Solidago Canadensis ; small ones often fascicled in the axUs. Corymb com- 

 pound. Cor. whitish, nearly twice as long (5") as the scales. Sept., Oct. 

 (Kuhnia glutinosa DC.) 



14 E. teuorifdlium "Willd. Lvs. opposite, sessile, ovate, rough, veiny, the lower 

 ones doubly serrate, upper ones subserrate or entire ; st. paniculate, pubescent, 

 with fastigiate, corymbous branches above ; scales elliptical, faintly striate, rather 

 acute.— Maaa. to La. Plant hairy, 2 to 3f high, with a somewhat panicled co- 

 rymb of white flowers. The upper lvs. are often entire. Invol. 5-flowered, with 

 twice as many scales in 2 rows. Closely allied to the following, but is much 

 more rough. Aug. (E. verbenaafolium Mx. E. pubescens Pers.) 



15 E. sessilifolium L. Lvs. opposite, amplexicaul, ovate-lanceolate, rounded at 

 the base, very smooth, serrate; st. smooth; inn^r scales oblong-oiovate, obtuse. — 

 Plant 2 to 4f high, in rocky woods, Mass. to Ind. and p-a. — St. slender, erect, 

 branchiilg at top into a corymb with white fls. Lvs. large, tapering regularly 

 from the somewhat truncate base to a long point, with smiall serratures, paler be- 

 neath. Flower-stalks downy. Hds. 5-flowered, with twice as many scales in 2 

 rows. Sept. 



16 E. rotundifolium "Willd. Hoaehound. Lvs. opposite, sessile, roundish- 

 ovate, subcordate at base, 3-veined and veinleted, coarsely serrate, scabrous above, 

 pubescent beneath ; hds. about 5-flowered ; inner scales acuminate, as long as the 

 flowers. — A bushy, compact species, in dry fields, N. J. and S. States. St. 2 to 3f 

 high, roughish. Lvs. 1 to 2' by 9 to 20", obtuse or broadly acute. Hds. fastigi- 

 ate-corymbous. Invol. very pubescent, concealing the white florets. Pappus 

 longer than cor. Sty. much exserted. Aug. Sept. 



17 E. pubescens Muhl. St. hirsute; lvs. opposite, sessile, distinct, ovate, acute, 

 obtusely dentate, rough-pubescent ; corymb fastigiate; invol. about 8-flowered; 

 scales lanceolate, acute, raiher shorter than the flowers.— A large, rough plant, 3 to 

 4f high gi'owing on dry grounds, N. H. to Penn. Distmguished from No. 16 by 

 its larger lvs. (2 to 3' by 1} to 2'), hds., and proportionately shorter scales, which 

 are about 12, the outer much the shortest Aug. (E. ovatum Bw.) 



18 E perfoUatum L. Thoboogh-woet. Eoneset. Lvs. connate-perfoliate, 

 very pubescent— A common, well-known plant, on low grounds, meadows, U. S. 

 and Can., abundant. St. 1 to 5f high, round, rough, and hairy. Bach pair of 

 lvs are so united at the base as to constitute a single lamina, centrally perforated 

 by the stem, and placed at right angles to it; they are rgugh, rugose, serrate, 



27 



