368 



COMPOSITAE. 



VOL. III. 



10. Lacinaria pilosa (Ait.) Heller. Moun- 

 tain Button-Snakeroot. Fig. 4186. 



Serratula pilosa Ait. Hort. Kew. 3: 138. 1789. 

 L. pilosa Heller, Muhlenbergia i : 6. 1900. 



Glabrous, except the ciliate leaf-bases and 

 involucral bracts, 5'-3i tall, simple. Leaves 

 rather numerous, the basal often fully half as 

 long as the stem, with broadly linear or linear- 

 oblong blades, the upper stem leaves much 

 smaller, with linear blades, all more or less 

 ciliate near the base ; involucres turbinate, 2i"-3" 

 broad, sessile or short-peduncled, the bracts 

 purple, the outer ovate or oval, the middle ones 

 with oval or ovate blades and short claws, the 

 inner linear or linear-spatulate, all obtuse and 

 rather broadly margined ; pappus barbellate ; 

 achenes 2*"-3" long, hairy. 



%, 



In dry or rocky soil, Virginia and West Virginia 

 to Georgia and Alabama. July-Sept. 



9. Lacinaria graminifolia (Walt.) 

 Kuntze. Loose-flowered Button- 

 Snakeroot. Fig. 4185. 



Anonymos graminifolius Walt. Fl. Car. 197. 



1788. 

 Liatris graminifolia Pursh, Fl. Am. Sept. 



2: 508. 1814. Not Willd. 1804. 

 L. graminif. Kuntze, Rev. Gen. PI. 349. 1 89 1 . 

 Liatris graminifolia var. dubia A. Gray, 



Man. Ed. 2, 185. 1856. 



Glabrous, or sparingly pubescent, i-3 

 high. Leaves similar to those of the pre- 

 ceding species, but more conspicuously 

 punctate, usually somewhat ciliate, at 

 least near the base and acute or acutish 

 at the apex ; heads spicate, racemose or 

 sometimes panicled, mostly peduncled ; 

 involucre obovoid, narrowed or acute at 

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

 tinctly punctate, appressed, rounded, 

 more or less scarious-margined, thick; 

 flowers purple; pappus barbellate; 

 achenes hairy. 



In dry soil, New Jersey to Florida. Fine- 

 leaved blazing-star. Aug.-Sept. 



ii. Lacinaria Smallii Britton. Small's 

 Button-Snakeroot. Fig. 4187. 



Lacinaria Smallii Britton, Manual 927. 1901. 



Similar to L. graminifolia. Stem very slender, 

 i-2 high. Leaves scattered, linear, 2"-5" 

 wide, acute, pubescent on the midvein beneath, 

 spreading, very punctate; heads scattered, ses- 

 sile in the axils of the upper small leaves, the 

 uppermost leaves not larger than the involucral 

 bracts; involucre oblong-campanulate, about 

 8-flowered, about 5" high, its innermost bracts 

 linear, acute or acutish, the outermost obtusish, 

 all punctate; flowers purple; pappus plumose. 



Iron Mountain, Smyth Co., Virginia. Aug. 



Lacinaria Helleri (Porter) Heller, of the North 

 Carolina mountains, with narrower involucral 

 bracts and erect or ascending leaves, is recorded 

 from Virginia. 



