CABDUACEAE. 437 



acute or obtuse at the apex, mostly rounded or obtuse at the base, the slender 

 petioles 5-15 mm. long; heads several in the corymb; peduncles 5-10 mm. long; 

 involucre about 4 mm. high, its bracts oblong-lanceolate, acute; flowers violet 

 or white ; pappus scales lanceolate, ciliolate, awnless or some of them bristle- 

 tipped, about one-third as long as the achene. 



Waste places and cultivated fields, Abaco, Great Bahama and Andros to 

 Ackliu's Island, Calces and Turk's Islands and Imagua : — Cuba ; ■Tamalea'; Hlspanionla ; 

 contiuental tropical America. Specimens from New Providence and Harbour Island, 

 referred by Dr. B. D. Koibinson (Proc. Am. Acad. 49: 463) to Ageratum conyzoides 

 inaeqwi/paleaceum X-Iieron., do not appear to be specifically distinct from A. latifoHum. 



Recorded by Schoepf, Dolley, Hitchcock and Mrs. Northrop as A. conysoides !•., 

 which It closely resembles. Wild Agekatum. Goat-bush. 



3. EUPATOEIXnVE [Tourn.] L. Sp. PI. 836. 1753. 



Erect herbs or shrubs, with opposite or verticillate, or sometimes alter- 

 nate, often punctate leaves, andj in most species, cymose-corymbose discoid 

 heads of white, blue or purple flowers. Involucre oblong, ovoid, campanulate, 

 or hemispheric, the bracts imbricated in 2-several series. Receptacle naied. 

 Corolla regular, its tube slender, its limb 5-lobed or 5-toothed. Anthers obtuse 

 and entire at the base, appendiculate at the apex. Style-branches elongated, 

 flattened, or thickened above, stigmatic at the base. Achenes 5-angled, trun- 

 cate. Pappus of numerous capillary, usually scabrous bristles arranged in 1 

 row. [Named for Mithridates Eupator. i. c, of a noble father.] Over 500 

 species, mostly of warm or tropical regions. Type species : .E«paiormm canna- 

 binum L. 



Leaves dissected into filifonn segments. 



Heads not secund; plants copiously pubescent. 1. E. capillifnliiim. 



Heads secund ; plants essentially glabrous. 2. E. leptophyllum. 



Leaves entire or dentate. 



Scales of the campanulate involucre in 1— S-series. 



Plants glabrous. 3, E. havanense. 



Plants finely pubescent. 4. B. villosum. 



Scales of the cylindric involucre imbricated in several series. 

 Scales without densely pubescent tips ; leaves entire, 

 serrate, or crenulate. 

 Leaves acute or acuminate, serrate. 5. E. odoratum. 



Leaves rounded or obtuse, entire or crenulate. 



Involucre 2-2.5 mm. ' thick ; scales narrow, 3- 



strlate. 6. E. bahamense. 



Involucre 3—4 mm'; thick ; scales broad, 5-striate. 7. E. lucayanum. 

 Scales with densely pubescent tips ; leaves coarsely 



crenate. 8. E. corymioaum. 



1. Eupatorium capillifdlium (Lam.) Small, Mem. Torr. Club 5: 311. 1894. 



Artemisia capillifolia Lam. Encyc. 1: 267. 1783. 

 Eupatorium foeniculaceum Willd. Sp. PI. 3: 1750. 1804. 



Erect, paniculately much branched, with the aspect of an Artemisia, the 

 stem finely pubescent, 1-3 m. high. Leaves crowded, dissected into filiform 

 segments, alternate, the lower petioled, the upper sessile; heads very numerous, 

 about 3 mm. high, short-peduncled, racemose-paniculate, 3-6-flowered; bracts 

 of the involucre in about 2 series, linear, cuspidate, narrowly scarious-margined, 

 glabrous; flowers greenish white. 



Moist places, in coppices and scrub-lands. Great Bahama, Abaco, North Cat Cay, 

 Andros, New Providence, Great Guana Cay, Eleuthera, Cat Island, Watling's Island 

 and Fortune Island : — ^Bermuda ; southern United States ; Cuba. Dog-fenxel. 



2. Eupatorium leptophyllum DC. Prodr. 5; 176. 1836. 



Erect, usually much branched above, 4-15 dm. high, similar to the preced- 

 ing species, but glabrous. Leaves numerous, mostly alternate, dissected into 



