02G COMPOSlTuE. 



PECTIS, L. 



P. ciliaris, L. Stem erect, smootli ; leaves linear, bristly-fringed below 

 the niKliile ; beads nearly sessile ; rays 3 ; pappus of llie disk-flowers of 5 

 lanceolate acuminate scales, of tbe rays only o. — Keys of Caxiiubas Bay, 

 Soutli Florida. — Stem G' - 12' liigli. 



LIATRIS, Scbrcb. 



L. Garberi, Gray. Hirsute, tbe 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 



( Garhc.r). 



L. tenuifolia, var. quadriflora. Leaves involute filitbrm, rigid, those 

 of the stem setaceous ; heads 4flowered ; scales of the involucre b, half as 

 long as the disk, often cuspidate — Banks of the Caloosa liiver, South 

 Florida. 



EUPATORIUM, Tourn. 



E. eonyzoides, Vahl. Shrubby, stem much branched (4°-G° high), 

 leaves opposite, ovate or ovate-lanceolate, acuminate, 3-nerved, serrate or 

 nearly entire ; corymb tricliotomous ; beads 10- 2U-flowered, receptacle flat; 

 scales of the involucre rounded at tbe tip, striate ; acbenium scabrous on the 

 angles. — Coast of South Florida ( Curtiss). 



E. heteroclinium, Griseb. ? Pubescent; stem branching above (2° 

 high); leaves opposite, ovate, crenate-serrate, short-petioled ; pedicels 1-3 

 in the forks of the branches, longer than the cylindrical many-flowered 

 heads; scales of the involucre smooth, oblong, obtuse, striate, deciduous; 

 receptacle globular, naked; flowers pale blue ; acbenium smooth. — Keys ot 

 South Florida. 



E. aromaticura, var. gracile. Smootlii.sh ; stem long and slender; 

 leaves thin, acuminate, coarsely serrate ; corymbs loose ; acbenium slightly 

 pubescent. — Dry sandy pine woods, Clear Water Harbor, South Florida. 



CONOCLINIUM, DC. 



C. dichotomum, Chapm. Stem dicliotomously branched (l°-2o high) ; 

 leaves deltoid, barely acute, crenate-serrate, twice as long as the short 

 petiole; corymbs numerous, mostly in the forks of the branches, sliort- 

 peduncled : heads few (3-10), short-pedicelled ; flowers blue. — South 

 Florida. 



ASTER, Tourn. 



A. ptarmacoides, Torr. & Gray. Smooth or scabrous ; stems (G'-15' 

 high) simple; leaves linear-lanceolate, 1-3-nerved; heads small, in a flat 

 corymb; scales of the involucre imbricated in 3 or 4 rows, short; rays 

 white. — Northern States. 



