192 COMPOSITE. (composite family.) 



obtuse or mucronate, morn or less pubescent; the edges not margined and com 

 monly ciliate. — Sandy pine barrens, Alabama, Georgia, and Florida. Septem- 

 ber. — Stem l°-2° high. Varies greatly in the Length and direction of the 

 pedicels. 



8. L. graminifolia, Willd. Stem usually smooth, and striped with 

 greener lines ; leaves more or less hairy on the upper surface, and fringed near 

 the base; the lowest lanceolate or linear-lanceolate, elongated, the upper linear; 

 heads in spikes or racemes, often very numerous; involucre broadly obconical, 

 7- 14-flowered ; the scales oblong-spatulate, rounded at the apex, narrowly mar- 

 gined. (L. gracilis, Ell, a more slender form, with the fewer-flowered heads on 

 longer pedicels.) — Light dry soil, Florida to Mississippi, and northward. Sep- 

 tember. — Stem 2° - 6° high. 



9. L. spicata, Willd. Smooth; stem very leafy; leaves linear, erect; 

 the lowest very long, obtuse, 3-5-ribbed; the uppermost small and bract-like; 

 heads sessile, cylindrical, 8 -12-flowercd, crowded in a long cylindrical spike; 

 scales of the involucre smooth, obtuse, narrow-margined, purple. (L. resinosa, 

 Nutt., a small form with 5-flowered heads.) — Swamps, Florida to Mississippi, 

 and northward. August and September. — Stem rigid, 2° -5° high. Spikes 

 sometimes 2° -3° long. Styles elongated. 



10. L. pilosa, Willd. More or less pubescent with long scattered hairs ; 

 stem stout ; leaves linear or linear-lanceolate, elongated, hairy ; heads in a loose 

 simple raceme, 10- 1 5-flowered ; scales of the turbinate or campanulate involu- 

 cre glabrous, not punctate, with slight scarious margins, the exterior narrowly 

 oblong, short, very obtuse ; the innermost linear ; achenia pubescent, nearly as 

 long as the densely bearded (almost plumose) pappus. — Henderson County, 

 North Carolina, Curtis. — A stout plant, with the heads 8' -10" long. 



11- L. scariosa, Willd. Stem stout, pubescent ; leaves mostly pubescent, 

 the lowest large, oblong or lanceolate, obtuse, the upper linear, acute ; heads 

 largo, 1 5 - 40-flowered, roundish, sessile or pcdicelled ; scales of the involucre 

 spatulatc or obovate, rounded at the apex, usually with broad and colored mar- 

 gins ; the outer ones with spreading tips. (L. spheroidea, Michx.) — Dry light 

 soil, Florida to Mississippi, and northward. September. — Stem 3°-G°high. 

 I lends sometimes 1' wide. 



12. L. heterophylla, Brown. Leaves lanceolate, smooth; the upper 

 ones linear-lanceolate and much smaller; heads about 10, roundish, spiked, 

 crowded, 15 - lG-flowered ; scales lanceolate, with pointed spreading tips. — Geor- 

 gia to North Carolina, not common. 



§ 2. Root not tuberous: leaves o!x>vate or oblotifj : heads fen-flowered, eorymhed or 

 panicled: pappus minutely bearded. 



13. L. odoratissima, Willd. (Houkd's Toxgue.) Stem herbaceous, 

 smooth ; leaves smooth and often glaucous, obtuse ; the lowest spatulate-obovatc, 

 3-5-ribbed, the upper oval or oblong, small, sessile ; heads 7 -8-flowered, dis- 

 poned in an ample spreading corymb or panicle. — Flat pine barrens, Florida 

 I') North Carolina, and westward. September. — Stem 2° -3° high. The 

 withering leaves exhale the odor of vanilla. 



