438 CARDUACEAE. 



filiform segments; heads numerous, 3.5-4.5 mm. high, short-peduncled, in 

 terminal secund racemes 2-10 cm. long; bracts of the involucre in about 

 2 series, linear, cuspidate or aristate; flowers nearly white. 



Border of marsh at Adelaide, New Providence : South Carolina ; Florida ; Cuba. 

 Smooth Dog-fennel. 



5^ 3. Eupatorium havanense H.B.K. Nov. Gen. 4: 128. 1820. 



Eupatorium ageratifolium DC. Prodr. 5: 173. 1836. 



Shrubby, branched, glabrous or nearly so, the branches spreading. Leaves 

 opposite, ovate to ovate-lanceolate or deltoid-ovate, 2-8 cm. long, acute or ob- 

 tuse, coarsely dentate or erenate-dentate, obtuse to subcordate at the base, 

 petioled; heads commonly numerous; involucre 10-30-flowered, 4-5 mm. high; 

 its bracts linear to linear-spatulate; flowers white; achenes 2-3 mm. long. 



Coppices, pine-lands and scrub-lands, Abaco. Great Bahama, Andros. New 

 Providence, Eleuthera : Cuba ; Texas and Mexico. Cat-tongue. Havana Thorough- 

 wort. 



4. Eupatorium villdsum Sw. Prodr. 111. 1788. 



A branching shrub, 2 m. high or less, the leaves and branches tomentulose. 

 Leaves opposite, petioled, ovate, 1.5-7 cm. long, obtuse, repand-dentate or 

 entire; heads small, usually numerous; involucre about 3 mm. high, 8-15- 

 flowered, its bracts oblong or linear-oblong, obtuse; flowers white or purplish; 

 achenes 1.5-2 mm. long. 



Scrub-lands, coppices and pine-lands, Abaco, Great Bahama and Andros to 

 Crooked Island and Atwood Cay : Florida ; Cuba ; Jamaica and the Cayman Islands. 

 Velvety Thorodghwort. Jackmada. 



^. 5. Eupatorium odoratum L. Syst. ed. 10, 1205. 1759. 



Eupatorium conyzoides Vahl, Symb. 3: 96 1794. 



Shrubby, much branched, more or less pubescent, erect, or in thickets half- 

 climbing, 1-3 m. high. Leaves thin, ovate to ovate-lanceolate, 5-15 cm. long, 

 3 -nerved, dentate, often with large acute teeth, acuminate at the apex, usually 

 cuneate at the base, the slender petioles 1-4 cm. long; heads in terminal 

 corymbs 5-10 cm. broad, cyiindric, 8-12 mm. long; involucre-bracts imbricated 

 in about 4 series, striate-nerved, glabrous or nearly so, shining, all obtuse, or 

 the inner acute or aeutish; flowers 10-20, white to blue; achenes rough-angled. 



Rocky plains and scrub-lands from Andros, New Providence and Eleuthera 

 southward to Cay Sal islets and the Caicos group : southern United States ; West 

 Indies and continental tropical America. Recorded from Bermuda. Bushy Tropical 

 Thoroughwort. Tonka-bean. Bitter-bush. Erroneously called Vanilla. 



6. Eupatorium bahamense Northrop, Mem. Torr. Club 12: 70. 1902. 



Shrubby, branched, 1-1.6 m. high, the twigs puberulent. Leaves ovate to 

 lanceolate, rather firm in texture, punctate, glabrous or sparingly puberulent, 

 2-7 cm. long, obtuse at the apex, cuneate to subtruncate at the base, entire or 

 sparingly crenate, 3-nerved, the petioles 2 cm. long or less; corymbs dense, 

 2-5 cm. broad, the heads sessile or short-peduncled; involucre cyiindric, 8-10 

 m m. high, 2-2.5 mm. thick, its scales imbricated in 4 or 5 series, oblong to 

 lanceolate, obtuse, 3-nerved; flowers pale blue or lavender; achenes 3-4 mm. 

 long, 3-5-angled, tapering to the base. 



Sand-dunes, coppices and scrub-lands, Little Harbor Cay of the Berry Islands, 

 Andros, New Providence, Eleuthera and Great Guana Cay of the Exuma Chain. 

 Endemic. Recorded by Dolley and by Eaton and Setchell as E. integrifolium Bert. 

 Bahama Thoroughwort. 



