COMPOSITAE. 





[Vol. III. 



J-A 





8. Lacinaria spicata(L.) Kuntze. 



Dense Button-Snakeroot. Gay 

 Feather. Uevir.s Bit. (Fig. 3643.) 



Stirulala spicala I,. Sp. PI. 819. 1753. 

 IJalris spicala Willd. Sp. PI. 3: i6.?6. 1804. 

 L. spicala Kuntze, Kev. Gen. PI. 349. 1891. 



Glabrous or nearly so, 2°-6° high. 

 Lower leaves linear-lanceolate or liuear- 

 oblong, usually blunt-poiuted, soinelimes 

 1° long and 5" wide, the upper linear or 

 even subulate, somewhat or obscurely 

 punctate; spike generally dense, 4'-l5' 

 long; heads sbort-oblong or cylindric, 

 5-13-flowered, 2"-4" broad, mostly 

 sessile; involucre rounded or obtuse at 

 the base, its bracts appressed, oblong, ob- 

 tuse and scarious-margined at the apex, 

 obscurely punctate, imbricated in 4-6 

 series; flowers blue-purple, occasionally 

 white; pappus roughened or barbellate. 



Inmoistsoil.Massachusett.'i to Florida, west 

 toWisconsin,Keiitucky, Louisiana and Arkan- 

 sas. Called also Rough or Backaclie-root. 

 Throat wort, Prairie Pine, Colic-root. Aug.-Oct. 



Lacinaria spicata pCimila (Lodd.) Porter, Mem. Torn Club, 5; 314. 1894. 

 Lialris puniila Lodd. Bot. Cab. />/. /.//. 1821. 

 Liatris spicala var. monlana .K. Gray, Syn. Fl. i: Part 2, in. 1884. 



Low, stout, i°-2° high. Lower leaves broader and shorter, obtuse; spike shorter; heads larger. 



9. Lacinaria graminifolia (Walt.) 

 Kuntze. Loose-flowered Button- 

 Snakeroot. (Fig. 3644.) 



Anonymus giaminif alius Walt. Fl. Car. 

 197. 17S8. 



~ - — - ggpj 



Lialris graminifolia Pursh, Fl. Am. 



2: 508. 1814. Not Willd. i,Su4. 

 Lacinaria graminifolia Kuntze, Rev. Gen. 

 349. 1S91. 



Glabrous, or sparingly pubescent, i°-3° 



rt «j L \'ic '3 C/Tiigh. Leaves similar to those of the pre 

 ^'W' ' ceding species, but more conspicuously 



sly 

 punctate, usually somewhat ciliate near 

 the base and acute or acutish at the apex; 

 heads spicate or racemose, mostly pedun- 

 cled; involucre narrowed or acute at 

 the base, 2"-4" broad, its bracts distinctly 

 punctate, appressed, rounded and scarcely 

 margined at the apex, thick; flowers pur- 

 ple; pappus barbellate; achenes hairy. 



In dry soil, Virginia to Florida and Georgia. 

 Ascends to 4200 ft. in North Carolina. Called 

 also Fine-leaved Blazing Star. Aug. -Sept. 



Lacinaria graminifolia pilosa (Ait. ) Britton, 

 Mem. Torr. Club, 5: ,^14. 1S94. 

 Serrulala pilosa \.\\.. Hort. Kew. 3: 138. 1789. 

 Lialris graminifolia var. diihia A. Gras", Man. Ed. 2, 185. 1856. 



Leaves usually prominently ciliate: heads larger, spicate, racemose, or even paniculate; bracts of 

 the involucre linear-oblong or spatulate, narrowly scarious-margined. In sandy soil, New Jersey 

 to Florida and Alabama. 



9. TRILISA Cass. BulL See. Philom. 1818: 140. 1818. 



Erect perennial herbs, with flbrous roots and alternate simple leaves; those of the stem 

 sessile or clasping, the basal ones narrowed into petioles. Heads small, discoid, of 5-10 purple 

 or white flowers, in terminal tliyrsoid or corymbose panicles. Involucre campanulate, its 

 bracts imbricated in 2 or 3 series, the outer scarcely shorter than the inner. Receptacle flat, 

 naked. Corolla regular, its limb 5-lobcd. Anthers obtuse and entire at the'base. Achenes 

 nearly terete, lo-ribbed. Style-branches slender, obtuse. Pappus of 1 or 2 series of elon- 

 gated, barbed bristles. [Anagram of Lialris.'] 



Two known species, native of the southeastern United States. 

 Stem glabrous; heads corymbose-paniculate. i. T. odoralissima. 



Stem viscid-pubescent; heads thyrsoid-paniculale. 2. T. paniculala. 



