442 CARDUACEAE. 



7. GUNDLACHIA A. Gray, Proc. Am. Acad. 16: 100. 1880. 



Somewhat viscid, leafy shrubs, with alternate entire, linear to oblance- 

 olate leaves, and numerous small heads of both discoid and radiate white 

 flowers in terminal thyrses or compound corymbs. Ray-flowers few, pistillate; 

 disk-flowers somewhat more numerous, perfect. Involucre obconic, its bracts 

 coriaceous, imbricated in 4 or 5 series, the outer much shorter than the inner. 

 Achenes nearly terete, 5-nerved. Pappus a single series of capillary bristles. 

 [In honor of John Gundlach, 1810-1896, traveller and naturalist.] A few 

 species, natives of the West Indies. Type species: Gundlackia domingensis 

 (Spreng.) A. Gray. 



1. Gundlachia corymbosa (Urban) Britton; Boldingh, Fl. Ned. West-Ind. 391. 

 1913. 



Gundlachia domingensis corymbosa Urban, Symb. Ant. 3: 406. 1903. 



Nearly glabrous, viscid above, bushy-branched, 6-12 dm. high. Leaves 

 oblanceolate to oblong-lanceolate, 3-8 cm. long, 5-20 mm. wide, fleshy, obtuse 

 and rounded at the apex, or emarginate or mucronulate, narrowed at the base, 

 short-petioled, the midvein rather prominent, the lateral veins few and obscure ; 

 corymbs dense, convex, 3-10 cm. broad; heads short-peduncled; involucre about 

 5 mm. high, its bracts acute or aeutish, the outer ovate, the inner linear- 

 lanceolate; rays spreading, 4-5 mm. long. 



Sand-dunes, scrub-lands, pine-lands and borders of saline marshes. Andros, Eleu- 

 thera to Acklin's, Grand Turk and Inagua : Porto Rico ; Anegada ; Saba ; Barbuda ; 

 Desirade : Montserrat ; Curasao ; Aruba. Horse-bush. Broom-bush. Soldier's-bcsh. 



8. ERIGERON L. Sp. PI. 863. 1753. 



Branching or scapose herbs, with alternate or basal leaves, and corymbose, 

 paniculate or solitary, peduncled heads, of both tubular and radiate (rarely all 

 tubular) flowers. Involucre hemispheric or eampanulate, its bracts narrow, 

 nearly equal, imbricated in but 1 or 2 series in most species. Receptacle nearly 

 flat, usually naked. Ray-flowers usually numerous, white, violet or purple, 

 pistillate. Disk-flowers yellow, tubular, perfect, their corollas mostly 5-lobed. 

 Anthers obtuse and entire at the base. Style-branches more or less flattened, 

 their appendages short, mostly rounded or obtuse. Achenes flattened, usually 

 2-nerved. Pappus-bristles fragile, slender, scabrous or denticulate, in 1 series, 

 or often an additional outer shorter series. [Greek, early-old, alluding to the 

 early hoary pappus.] A genus of some 130 species, of wide distribution. 

 Type species: Erigeron acre L. 



1. Erigeron quercifolium Lam. Tabl. Encyc. 3: 258. 1823. 



Perennial, pubescent; stems 1-7 dm. high, commonly branched above, 

 erect, slender. Basal and lower leaves spatulate, oblanceolate or oblong, 412 

 cm. long, sinuate-pinnatifid, narrowed into margined petioles, the upper ob- 

 lanceolate to lanceolate, distant, smaller, mostly sessile; heads rather few; 

 involucre about 3 mm. high, its bracts linear, acute or acuminate; rays many, 

 white or purplish, 3-4 mm. long. 



Moist grounds. Abaco. Great Bahama, Andros, New Providence, Eleuthera : 

 Florida. Referred to E. tenuis T. & G. by Dolley. Southern- Fleabane. 



