Order 70.— COMPOSITE. 417 



Knoar and entire. Cor. dilated at mouth, with short, obtuse lobes, white. Aug.— 

 Oct. (E. glaucescens /?. leucolepis DC.) 



10 E. hyssopifolium L. Lvs. opposite, often verticillate, linear-lanceolate, ob- 

 scurely triph-veined. punctate, lower ones subserrate, upper ones entire ; scales short, 

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

 pubescent, in dry fields, Mass. to Iowa and La. St. about 2f high, brandling 

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

 long, scales half as long. Aug., Sept. (i. linearifolium is more pubescent, with 

 the lower lvs. serrate. — South. 



11 E. ctineifdlium Willd. Pubescent ; lvs. small, glaucous both sides, broadly 

 oblanceolate or oblong, obtuse at apex, acute at the subsessile base, slightly 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. parvifldruni Ell. Soft-puberulent, diffusely branched ; lvs. mostly oppo- 

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

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

 pubescent, glandular (like the 3 preceding), outer very short, inner linear, obtuse. — 

 Low grounds, Va. 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 Z-veined; hds. 5-flowered; scales 8 to 12, 

 elliptical, obtuse, pubescent. — Woods and saudy 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 axils. Corymb com- 

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

 (Kuhnia glutinosa DC.) 



14 E. teucrifolitmi 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. — Mass. to La. Plant hairy, 2 to 3f high, with a somewhat panicled co- 

 rymb of white flowers. The upper ivs. 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. verbengsfolium Mx. E. pubescens Pers.) 



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

 the base, very smooth, serrate; st. smooth; inner scales oblong-obovate, obtuse. — 

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

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

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

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

 rows. Sept. 



16 E. rotuii&ifdliuni Willd. Hoarhound. 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, roughisli. Lvs. 1 to 2' by 9 to 20", obtuse or broadly acute. Hds. fastigi- 

 ate-corymbous. Invol. very pubescent, concealing the white florets. I'appua 

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



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

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

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

 4f high, growing on dry grounds, N. H. to Penn. Distinguished from No. 1G by 

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

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



18 E. perfoliatum L. Thorocgii-wort. Boneset. 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. Each 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 ; thev are rough, rugose, serrate, 



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