CARDUACEAE. 



393 



2. Erigeron philadelphicus L. 



Philadelphia Fleabaxe. (Fig. 

 429.) Perennial by stolons and 

 offsets, soft-pubescent or sometimes 

 nearly glabrous; stems slender, 

 mostly branched above, l°-3° high. 

 Basal and lower leaves spatulate or 

 obovate, obtuse, dentate, ^^'-2^ 

 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- 

 peduncled; bracts linear, usually 

 scarious-margined ; achenes puberu- 

 lent. [E. jamaicensis? of Eeade 

 and of H. B. Small ; E. quercifolium 

 of Lefroy; ?E. tenuis 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 



3. Erigeron Darrellianus Hems- 

 ley. Darrell's Fleabane. (Fig. 

 430). Perennial, shrubby, l°-4i° 

 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 IV' long; receptacle 

 pitted; achenes 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 interestmg and rather abundant plant, with pretty white flowers, re- 

 mained botanically unnamed, until published in 1S83 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 Ericjcvon, and Reade in 

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

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

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



