Erigeron. COMPOSITiE. 355 



^ 3. PHALOcHROtOMA, Cass. Rays very numerous in a single series, longer than the involucre : 

 pappus manifestly double : the exterior very short, subulate or squamellate, or almost coroniform ; 

 the interior of few somewhat deciduous bristles, often caducous or wanting in the ray : achenia 

 2-nerved. — Annual or biennial plants. 



4. Erigeron annuum, Pers. Sweet Scabious. Daisy, etc. 



Sparsely hairy ; stem corymbosely branched above ; leaves coarsely and sharply toothed ; 

 radical and lovyermost ovate, obtuse, tapering into a margined petiole ; upper cauline lanceolate- 

 acute, serrate in the middle ; uppermost generally entire ; rays very narrow, scarcely twice the 

 length of the sparsely hispid involucre. — Pers. syn. 2. p. 431 ; Hook. fl. Bor.-Am. 2. p. 20; 

 Torr (^ Gr.fl. N. Am. 2.p. 175. E. heterophyllum, Muhl. in Willd. sp. 3. p. 1956 ; Pursh, 

 fl. 2. p. 534 ; Nutt. gen. 2. p. 148 ; Bost. veg. mat. med. t. 21 ; Beck, bot. p. 180 ; Darlingt. 

 fl,. Cest. p. 472. E. strigosum, Bigel. fl. Bost. p. 302. Aster annuus, Linn. sp. 2. p. 

 875 ; Ait. Kew, (ed. 2.) 5. p. 59. Stenactis annua, Nees. Ast. p. 273. S. annua and 

 strigosa, DC. prodr. 5. p. 299. 



Root apparently annual. Stem stout, 2-4 feet high, striate and angular, more or less 

 hairy. Radical and lower leaves often 1 - 2 or more inches in breadth, tapering at the base, 

 with a rather long winged petiole : stem leaves usually with only 2-4 large teeth near the 

 middle. Heads of flowers rather small ; the rays white or tinged with purple, with the interior 

 pappus wanting. 



Fields and meadows ; very gcommon. June - August. This is one of the Shaker 

 medicines, and is reputed to be diuretic and astringent. 



5. Erigeron strigosum, Muhl. Fleabane. Daisy. 



Stem more or less strigose with a minute appressed pubescence ; stem slender, corymbose- 

 paniculate at the summit ; leaves either entire or shghtly toothed ; the radical and lower 

 cauline spatulate-lanceolate, 3-nerved, tapering to a long narrow petiole ; upper ones 

 oblanceolate ; rays narrowly linear, about twice the length of the minutely hispid involucre. 

 Muhl. in Willd. sp. 3. p. 1956 ; Ell. sk. 2. p. 394 ; Torr. compend. p. 290 ; Hook. fl. 

 Bor.-Am. 2. p. 18; Beck, bot. p. 180; Darlingt. fl. Cest. p. 471 ; Torr. <^ Gr.fl. N. Am. 

 2. p. 176. E. ambignum, Nutt. gen. 2. p. 147. E. nervosum, Pursh, fl. 2. p. 534, not of 

 Willd. E. integrifolium, Bigel. fl. Bost. p. 302. E. spathulatum, H. H. Eaton, in Transyl. 

 jour. med. March, 1832. E. philadelphicum, Bart. veg. mat. med. t. 20. Phalocroloma 

 obtusifolium, Cass. ; DC. prodr. 5. p. 298, excl. syn. Stenactis ambigua, DC. I. c. p. 299. 

 S. Beyrichii, Fisch. <^ Meyer. 



Root annual. Stem 2-4 feet high, somewhat angular and striate, simple, except near the 

 summit. Leaves usually entire, but sometimes sparingly toothed ; petioles of the radical ones 

 1-3 inches long ; cauline leaves gradually diminishing in size upwards, acute or rather obtuse. 

 Corymbs small, loose, nearly naked. Heads about three-fourths of an inch in diameter. 



45* 



