474 COMPOSITAE. [Vol. III. 



2. Mesadenia atriplicifolia (L.) Raf. Pale Indian Plantain. (Fig. 4030.) 



Cacalia alriplicifolia L. Sp. PI. 835. 1753. 

 Senecio alriplicifolius Hook. Fl. Bor. Am. 



1:332- "833. 

 Mesadenia alriplicifolia Raf. New Fl. 4: 



79. 1836. 



Stem terete, glabrous and glaucous, 

 3°-6'> high. Leaves thin, angulatc- 

 lobed, glaucous beueath, the lower and 

 basal ones slender-petioled, sometimes 

 6' wide, the upper reniform, fan-shaped, 

 or triangular with a nearly truncate 

 base, the uppermost commonly small, 

 lanceolate or oblong and entire; heads 

 very numerous, about \]i." broad, in 

 large loose compound corymbs; invo- 

 lucre 3"-4" high, its bracts about 5, 

 linear-oblong, scarious-margined, with 

 or without 1-3 minute outer ones. 



In woods, western Ontario to Minnesota, 

 south to Florida, Missouri and Kansas. 

 Kare or absent near the coast. Called also 

 Wild Caraway. July- Sept. 



Tuberous Indian Plantain. 



Mesadenia tuberosa (Xutt.) Britton. 



(Fig. 4031.) 



Cacalia luberosa Nutt. Gen. 2: 138. :8iS. 

 Mesadenia planiaginea Raf. New Fl. 4: 79. 1836. 

 Senecio Ntttlallii Sell. Bip. Flora, 27: 499. 1845. 



Glabrous and green throughout; stem angled, 

 stout, 2°-6° high. Leaves thick, strongly 5-9- 

 uerved, the lower and basal ones oval, ovate, 

 or ovate-lanceolate, obtuse or acutish, usually 

 quite entire, but sometimes repand, long-peti- 

 oled, narrowed at the base, or rarely subcordate, 

 4'-S' long, I '-3' wide; upper leaves ovate to 

 oblong or cuneate-obovate, sessile or short-pet- 

 ioled, much smaller, sometimes toothed toward 

 the apex; heads very numerous in a compound 

 corymb, about 2" broad, mostly 5-flowered; 

 involucre 3"-4''' high, its bracts linear-oblong, 

 obtuse or obtusish, scarious-margined. 



On wet prairies and in marshes, Ohio and we-st- 

 <-rn Ontario to Minnesota, south to Alabama, Louisi- 

 ana and Arkansas. June-Aug. 



94. SYNOSMA Raf.; Loud. Card. Mag. 8: 247. 1832. 



A perennial leaf\' herb, glabrous or very nearly so, with triangular or hastate, alternate 

 leaves, the lower petioled, the upper sessile, and several or numerous, corymbose or corym- 

 bose-paniculate, discoid heads of white or pinkish flowers. Involucre nearly cylindric, its 

 principal bracts 12-15, linear, acute, usually with some subulate outer ones. Receptacle flat, 

 naked. Flowers perfect; corolla 5-lobed. Style-branches not appendaged. Pappus of very 

 numerous white soft capillary bristles. [Greek, perhaps signifying a fragrant composite.] 



A monotypic genus of eastern North America. 



