CABDXJACEAE. 439 



7. Eupatorium lucayanum Britton, sp. nov. 



A much-branched shrub, 4^6 dm. high, the young branches finely puberulent. 

 Leaves ovate, short-petioled, 4 em. long or lesSj obtuse or rounded at the apex, 

 obtuse or subtruncate at tha base, entire-margined, puberulent, at least on 

 the veins beneath, copiously punctate, somewhat fl.eshy, 3-nerved, the puberu- 

 lent petioles 3-7 mm. long; corymbs dense, 3-6 cm. broad, the heads sessile on 

 their branches; involucre oblong-cylindric, 7-9 mm. high, 3-4 mm. thick, its 

 scales in 5 or 6 series, suborbicular to oblong, obtuse, puberulent, strongly 

 5-striate; flowers lilac or pale purple; achenes narrowly obpyramidal, about 

 4 mm. long. 



Rocky soil and coastal rocks, Abaco, Frozen Cay, Berry Islands, Acklin's Island, 

 Crooked Island, Marlguana and East Calces. Type from Maa-iguana (Wilsonj 7^25). 

 Eecorded by DoUey and by Hitchcock as Jlupatorium repandum WlUd. 



8. Eupatorium corymbosum Aubl. PI. Guian. 2: 799. 1775. 



Eupatorium atripUcifoUum Lam. Eneycl. 2: 407. 1788. 

 Eupatorium repandum Willd. Sp. PI. 3: 1767. 1804. 



A shrub about 6 dm. high, the young shoots, petioles and branches of the 

 inflorescence densely puberulent. Leaves firm in texture, slightly fleshy, 4.5 

 cm. long or less, the blades reniform-cordate to suborbicular, rounded at the 

 apex, mostly about as wide as long, coarsely crenate, glabrous or nearly so 

 above, puberulent and pitted beneath with the midvein rather prominent, the 

 lateral veins few ; corymbs several, dense, 3-4 cm. broad, the heads sessile on 

 the short branches; involucre cylindrio with a somewhat narrowed base, 6-7 

 mm. high, 1.5—2 mm. thick; scales in four series, oblong to linear-oblong, 

 strongly striate-nerved, obtuse, their tips pubescent; flowers light purple; 

 achenes obpyramidal, 3-3.5 mm. long; pappus brownish. 



Sand-dunes, Clarence Town and Water Cay, Long Island : — Porto Eico to Tor- 

 tola ; Virgin Gorda ; St. Croix ; Martinique ; northern South America. 



4. MIKANIA Willd. Sp. PI. 3: 1742. 1804. 



Herbaceous twining vines, or some tropical species shrubs, with opposite, 

 petioled leaves, and discoid, mostly eymose-paniculate heads of white or pink 

 flowers. Heads 4-flowered. Involucre oblong, of 4 slightly unequal narrow 

 bracts. Eeceptacle small, naked. Corolla regular, its tube slender, the limb 

 campanulate, 5-cleft. Anthers entire and obtuse at the base. Style-branches 

 elongated, aeutish. Achenes truncate, 5-angled. Pappus of numerous capil- 

 lary roughish bristles in 1 or 2 series. [In honor of J. G. Mikan, 1743-1814, 

 professor at Prague.] About 150 species, natives of America. Type species: 

 Mikania hastata (L.) Willd. 



1. Mikania scandens (L.) Willd. Sp. PI. 3: 1743. 1804. 



Eupatorium scandens L. Sp. PI. 836. 1753. 

 Mikania iatatifolia BC. Prodr. 5: 197. 1836. 

 Mikania orinocensis H.B.K. Nov. Gen. 4: 134. 1820. 

 Willoughhya scandens Kuntze, Eev. Gen. PI. 372. 1891. 

 Willugbaeya heterophyHa Small, Fl. SE. U. S. 1170, 1338. 1903. 



A vine, glabrous or nearly so, 1.5-4.5 m. long. Leaves ovate or hastate, 

 deeply cordate, acuminate, repand or obtusely dentate, 5-10 cm. long, 2-5 cm. 

 wide; petioles slender, shorter than the blades; heads in compound clusters 



