192 COMPOSITE. (COMPOSITE FAMILY.) 



obtuse or mucronate, more 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-flowered, 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 

 large, 15-40-flowered, roundish, sessile or pedicelled; scales of the involucre 

 spatulate 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 -6 high. 

 Heads 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 - 16-flowered ; scales lanceolate, with pointed spreading tips. Geor- 

 gia to North Carolina, not common. 



2. Root not tuberous : leaves obovate or oblong : heads few-flowered, corytnbed or 

 panided: pappus minutely bearded. 



13. L. Odoratissima, Willd. (HOUND'S TONGUE.) Stem herbaceous, 

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

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

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

 to North Carolina, and westward. September. Stem 2 -3 high. The 

 withering leaves exhale the odor of vanilla. 



