CUMPOSITJi. (^OMrOslTK FAMILY.) 211 



close raceme ; scales of the involucre barely pointed, smooth, purple. Dry 

 pine barrens. Sept. Stem 2 -4 high. Racemes often 1-sided. 



Var. quadriflora, Chapm. Leaves involute-filiform, rigid, those of the 

 stem setaceous ; heads 4-rlowered ; scales of the involucre 8, half as long a 

 the disk, often cuspidate. Banks of the Caloosa River, South Florida 



Oct. 



t- 4- Heads 3 - many-JJoicered : pappus densely hiarded. 



5. L. pauciflora, Pursh. Stem pubescent, declining; leaves linear, 

 shrt, smooth; heads 4 5-flowered, in a long 1-sided raceme; scales of the 

 involucre oblong-lanceolate, acute, smooth, or pubescent on the margins. (L. 

 secuiula, Ell.) Dry sandy ridges in the middle districts. Sept. Stem 

 2 -3 long. 



6. L. Chapmanii, Torr. & Gray. Stem tomeutose ; leaves smooth or 

 pubescent, linear, rather obtuse; the uppermost very short and bract-like; 

 heads mostly 3-flowered, cylindrical, densely spiked; scales of the involucre 

 lanceolate, acuminate, smooth ; the outer ones much shorter and broader ; 

 corolla and very hairy achenium large. Dry sandy ridges, Florida. July - 

 Sept. Stem 1 - 2 high. 



7. L. gracilis, Pursh. Stem tomeutose and somewhat lioarv ; leaves 

 smooth or nearly so, the lowest lanceolate, obtuse, long-petioled, the others 

 linear, appressed or spreading, short ; heads small, 3 - 7-flowered, sessile or on 

 slender tomentose and bracted pedicels ; scales of the involucre oblong, rather 

 obtuse or mucrouate, more or less pubescent; the edges not margined and 

 commonly ciliate. Sandy pine barrens. Sept. Stem 1 - 2 high. Varies 

 greatlv in the length and direction of the pedicels. 



8. L. graminifolia, YVilld. 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 

 obcouical, 7- 14-flowered ; the scales obloug-spatulate rounded at the apex, 

 narrowly margined. (L. gracilis, Ell., a more slender form, with the fewer- 

 flowered heads on longer pedicels.) Light dry soil. Sept. 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. August -Sept. 

 Stem rigid, 2 -5 high. Spikes sometimes 2 -3 long. Styles elongated. 



10. L. Garberi, Gray. Hirsute, the rigid leaves at length smooth; 

 heads closely spiked, 6 - 7-flowered ; scales of the bell-shaped involucre ovate 

 or oblong, cuspidate, glandular-hirsute ; pappus barbellate. Tampa, Florida 

 ( Garber). 



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 



