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 the base, entire-margined, puberulent, at least on 

 the veins beneath, copiously punctate, somewhat fleshy, 3-nerved, the puberu- 

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

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

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

 5-striate ; floAvers 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, 7^25). 

 Recorded by Dolley and by Hitchcock as Eupatorium repandum ^Yilld. 



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



Eupatorium atripUci folium Lam. Encycl. 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 cylindric 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. PL 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. Receptacle small, naked. Corolla regular, its tube slender, the limb 

 cam.panulate, 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: 

 MiTcania Jiastata (L.) Willd. 



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



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

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

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

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

 Willughaetja heterophylla 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 



