CARDUACEAE. 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 cm. long or less, obtuse or rounded at the apex, 

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

 the veins beneath, copiously punctate, somewhat fleshy, 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, suborbieular 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, Mariguana and East Caicos. Type from Mariguana (Wilson, 7.J25). 

 Recorded by Dolley and by Hitchcock as Eupatorium repandum Willd. 



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



Eupatorium atriplici folium Lam. Encycl. 2: 407. 1788. 

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



A shrub about 6 dm. high, the young s-hoots, petioles and branches of the 

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

 cm. long or less, the blades reniform-eordate to suborbieular, 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 cylindrie 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 Rico 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 cymose-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 

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

 elongated, acutish. 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 Tiastata (L.) Willd. 



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



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

 Mikania batatifolia DC. Prodr. 5: 197. 1836. 

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

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

 Willugbaeya heterophijlla Small, M. 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 



