CARDUACEAE. 



393 



2. Erigeron philadelphicus L. 



PHILADELPHIA FLEABANE. (Fig. 

 429.) Perennial by stolons and 

 offsets, soft-pubescent or sometimes 

 nearly glabrous; stems slenrler, 

 mostly branched above, l-3 high. 

 Basal and lower leaves spatulate or 

 obovate, obtuse, dentate, \'-1\' 

 long, narrowed into short petioles; 

 upper stem-leaves clasping and 

 often cordate at the base ; heads 

 several or numerous, corymbose- 

 paniculate, 5"-12" broad, slender- 

 pednncled; bracts linear, usually 

 scarious-margined; aehenes puberu- 

 lent. [E. jamaicensls? of Reade 

 and of H. B. Small ; E. quercifollmn 

 of Lefroy; ?E. tennis of Hemsley.] 



Banks and grassy places. Na- 

 tive. Widely distributed in North 

 America. Its fruit probably reached 

 Bermuda on the wind. Flowers in 

 spring and sometimes again in the 

 autumn. 



3. Erigeron Darrelhanus Hems- 

 ley. DARRELL'S FLEABANE. (Fig. 

 430). Perennial, shrubby, l-4* 

 high, branched, the stem and branches 

 glabrous or pubescent. Leaves thin, 

 oblong or oblanceolate, glabrous, 

 pubescent or ciliate, the lower ones 

 clustered, 3'-5' long, crenate-dentate 

 with apiculate teeth, or entire, obtuse 

 or acute at the apex, narrowed at the 

 base into short petioles, the upper 

 ones scattered, sessile, much smaller, 

 acute, entire ; heads numerous, 

 corymbose paniculate ; bracts of the 

 inflorescence linear l"-2" long; in- 

 volucre campanulate-cylindric, about 

 2" high, its bracts linear-lanceolate, 

 membranous, acuminate, imbricated 

 in about 3 series, the inner scarious- 

 margined, much longer than the 

 outer: rays about 30, linear, white 

 spreading, about 14" long; receptacle 

 pitted ; aehenes linear, sparingly pu- 

 bescent, about 1" long; pappus whit- 

 ish, 2-3-times as long as the achene ; 

 disk-flowers with a narrow, 5-lobed 

 corolla. 



Common in rocky situations. Endemic. Flowers from spring to autumn. 



This interesting and rather abundant plant, with pretty white flowers, re- 

 mained botanically unnamed, until published in 1883 by Hemsley in the Journal of 

 Botany 21 : 104, and in the Botanical Report of the Voyage of the Challenger, 1 : 

 42, published in 1885. Lefroy records it as an unidentified Erigeron, and Reade in 

 1883 describes it as an Aster, without specific name. I agree with Mr. Hemsiey in 

 regarding it as an Erigeron though it app_ears to have its nearest relative in the 

 plant known as Aster falcatus Klatt, native of Central America. Several young 



