CARDUACEAE. 441 



1. Aster lucayanus Britton, Bull. X. Y. Bot. Gard. 4: 143. 1906. 



Rootstock short, tuber-like ; stems erect, 5-7 dm. high. Leaves reticulate- 

 veined, entire, sessile (basal ones not seen), the louver oblanceolate, obtuse, those 

 above the middle of the stem lanceolate to" oblong-lanceolate, acuminate, 2-3.5 

 cm. long, 5-8 mm. wide, those of the inflorescence similar, smaller; heads 

 racemose or raeemose-eampanulate, about 2 cm. broad ; peduncles slender, 

 sericeous ; involucre turbinate-campanulate, its bracts loose, narrowly oblong- 

 lanceolate, acuminate, sericeous, the inner 5-7 mm. long; rays purple, 2 mm. 

 wide; achenes sericeous, 3 mm. long, half as long as the whitish pappus. 



Pine-land's of Great Bahama. Endemic. PINE-LAND ASTER. 



2. Aster adnatus Nutt. Jour. Acad. Sci. Phila. 7: 82. 1834. 



Rootstock tuberous; stem 2-8 dm. high, hispidulous, branched. Leaves 

 various, the basal ones obovate, 1.5-2.5 cm. long, those of the stem numerous, 

 oblong to lanceolate, 3-12 mm. long, scabrous, sessile, those of the branches 

 reduced to very small scales; heads few, terminating the branches; involucre 

 4-6 mm. high, its linear bracts with slightly spreading green tips; rays 

 numerous, violet, 7-10 mm. long; aehenes glabrous. 



Pine-lands of Great Bahama : southeastern United States. SCALE-LEAVED ASTER. 



3. Aster Bracei Britton; Small, Fl. Miami 190. 1913. 



Annual? Fleshy, glabrous, roots several coarse fibres; stem rather 

 slender, often zigzag, branched above, the branches divaricately ascending; 

 leaves all narrowly linear, thick, entire, acute, somewhat narrowed toward the 

 clasping base, the lower ones and those of shoots 10 cm. long or less, 3-4 mm. 

 wide, the upper much shorter, those of the branches few, linear-subulate, very 

 small ; heads mostly solitary at the ends of the slender branches ; involucre 

 camparmlate-cylindric, 3-4.5 mm. high ; bracts in 3 or 4 series, light green, 

 linear to linear-lanceolate, abruptly acute or short-acuminate ; rays pinkish, 

 45 mm. long; achenes 1-1.5 mm. long, rough on the angles. 



Brackish marshes and savannas, Abaco, Great Bahama, And'ros, New Provi- 

 dence : Florida ; Cuba. Recorded as A. tenuifolius by Coker. BRACE'S ASTEiR. 



4. Aster exilis Ell. Bot, S. C. & Ga. 2: 344. 1824. 



Annual, glabrous, somewhat fleshy, erect, 3-12 dm. high, usually much 

 branched, the branches slender. Stem-leaves linear or linear-lanceolate, 2-10 

 cm. long, entire, acute, sessile or nearly so, 2-5 mm. wide, those of the branches 

 subulate, 2-10 mm. long, Ihe basal ones oblong-lanceolate, petioled; heads 

 usually many, loosely panicled ; involucre 5-6 mm. high, its linear-subulate, 

 appressed bracts imbricated in 3 or 4 series ; rays several, 24 mm. long, 

 purplish or white, longer than the pappus; achenes pubescent. 



Wet grounds, Andros : southeastern United States ; Cuba. SLIM ASTER. 



5. Aster "bahamensis Britton, Bull. Torr. Club 41: 14. 1914. 



Stout, fibrous-rooted, slightly fleshy, glabrous, 3-20 dm. high. Lower 

 leaves and those of sterile shoots with sheathing petioles 47 em. long, the 

 blades oblong to linear-oblong or oblong-lanceolate, obtuse or acute, 4-8 cm. 

 long, 5-20 mm. wide, sparingly creuate-dentate or entire, narrowed into the 

 petiole, the midvein prominent, the lateral veins obscure; upper stem-leaves 

 linear, entire, 6 cm. long or less, those of the branches nearly subulate, 3-12 

 mm. long; heads numerous, paniculate; involucre nearly eyliudric, 6-8 mm. 

 high, its bracts linear, acuminate, about 0.7 mm. wide, green with scarious 

 margins, or the inner merely green-tipped ; rays purple, 4-5 mm. long ; achenes 

 columnar, 2.5 mm. long, the angles roughened; pappus brownish, twice as long 

 as the achene. 



Moist grounds and marshes, Great Bahama, Andros, Eleuthera and Cat Island : 

 Cuba. BAHAMA ASTER. 



29 



