444 CARDUACEAE. 



1. Eschenbachia lyrata (H.B.K.) Britton & Millspaugh. 



Conyza lyrata H.B.K. Nov. Gen. 4: 70. 1820. 



Perennial, erect, branched, viscid-pubescent, 4-9 dm. high, the branches 

 ascending. Basal and lower leaves obovate, coarsely dentate, 4-8 cm. long, 

 obtuse, narrowed into margined petioles; upper leaves much smaller than the 

 lower, oblong to obovate, dentate or lyrate, sessile or nearly so; heads few or 

 solitary at the ends of the branches, slender-peduncled; involucre campanulate, 

 about 8 mm. high, its bracts linear, acuminate. 



Waste grounds. Long Island, at Clarence Town ; Great Exunia, near George- 

 town : Cuba ; Mexico to Colombia. Sticky-weed. 



11. BACCHARIS L. Sp. PL 860. 1753. 



Dioecious shrubs, with alternate leaves, and small, paniculate or corymbose 

 heads of tubular flowers. Involucre campanulate or oblong, its many bracts 

 imbricated in several series, the outer shorter. Receptacle flat, naked, com- 

 monly foveolate. Corolla of the pistillate flowers slender, that of the staminate 

 tubular, 5-lobed. Anthers obtuse and entire at the base. Style-branches nar- 

 row or subulate, those of the fertile flowers smooth, exserted, those of the 

 sterile flowers rudimentary, tipped with an ovate pubescent appendage. 

 Achenes more or less compressed, ribbed. Pappus of the fertile flowers 

 copious, capillary, that of the sterile flowers short. [Named for Bacchus; 

 originally' applied to some different shrubs.] About 300 species, all American, 

 most abundant in South America. Type species: Baccharis ivifolia L. 



Leaves linear to narrowly oblanceolate, the lower often dentate. 1. B. angustifolia. 

 Leaves obovate to elliptic or oblanceolate. 



At least the lower leaves dentate. 2. B. halimifolia. 



Leaves all entire. 3. B. dioica. 



1. Baccharis angustifolia Michx. Fl. Bor. Am. 2: 125. 1803. 



A branching shrub, 2.5 m. high or less, the foliage resinous. Leaves mostly 

 linear, sessile, 1-8 cm. long, entire, or the lower denticulate; heads numerous, 

 glomerate in peduncled clusters, or solitary; involucre of the staminate heads 

 campanulate, about 2.5 mm. high, that of the pistillate ones oblong, 4-5 mm. 

 high, its bracts ovate to lanceolate, obtuse or acutish; achenes about 1 mm. 

 long; pappus white, twice as long as the involucre. 



Borders of marshes, Abaco, Great Bahama, Andros, New Providence : south- 

 eastern United States. Narrow-leaved Groundsel-bush. 



2. Baccharis halimifolia L. Sp. PI. 860. 1753. 



A branching glabrous shrub, 1-3 dm. high, the branchlets angled, some- 

 times minutely scurfy. Leaves thick, those of the stem and larger branches 

 2-7 cm. long, 1-5 cm. wide, those of the branchlets oblanceolate, short-petioled 

 or sessile, entire, or few-toothed toward the apex; heads in terminal peduncled 

 clusters of 1-5, those of the sterile plant nearly globose when young, the bracts 

 of the involucre oblong-ovate, obtuse, glutinous, appressed, the inner ones of 

 the pistillate heads lanceolate, acute or acutish; pappus bright white, 6-8 mm. 

 long, much exceeding the involucre. 



Borders of marshes, Great Bahama, Andros, New Providence : Coast of the 

 eastern and southeastern United States. The Andros specimen (Brace 5203) may rep- 

 resent the variety angustior DC, abundant in Cuba. Groundsel-bush. 



