Genus 35.] 



THISTLE FAMILY 



12. Erigeron Bellidiastrum Nutt. 

 Western Daisy Fleabane. (Fig. 3822.) 



Erigeron Bellidiastrum Nutt. Trans. Am. Phil. Soc. (II) 

 7: 307. 1 841. 



Annual, much branched, 6'-\^. high, cinereous- 

 pubescent throughout. Leaves entire, linear-spatulate, 

 the lower and basal petioled, i'-i^' long, the upper 

 sessile and smaller; heads several, or numerous, 5"-%" 

 broad; involucre hemispheric, about 2" high, its 

 bracts linear, hirsute, acute; rays 30-65, purplish, 

 about 2" long; pappus a single series of capillary 

 bristles. 



In moist soil, Nebraska and Kansas to Texas. 

 July. 



May- 



13. Erigeron annuus (I,.) Pers. 



Sweet Scabious. (Fig. 3823.) 



Aster annuus L. Sp. PI. 875. 1753- 

 Erigeron annuus Pers. Syn. 2: 431. 1807. 



Annual, sparingly, pubescent with spreading 

 hairs; stem erect, corymbosely branched, i-4 

 high. Leaves thin, the lower and basal ones 

 ovate or ovate-lanceolate, mostly obtuse, petioled, 

 usually coarsely dentate, 2 / -6'long, i'-?{ wide, the 

 upper sessile or short-petioled, lanceolate, oblong, 

 or linear-lanceolate, acute or acuminate, mostly 

 sharply dentate in the middle, those of the branches 

 narrower and often entire; heads rather numerous, 

 tj/z-y// broad, mostly short-peduncled; bracts of 

 the hemispheric involucre somewhat hispid ; rays 

 40-70, linear, white, or commonly tinged with pur- 

 ple, 2 // -4 // long; pappus double, the inner a series 

 of slender fragile deciduous bristles, often wanting 

 in the ray-flowers, the outer a persistent series of 

 short, partly united, slender scales. 

 In fields, Nova Scotia to the Northwest Territory, south to Virginia, Kentucky and Missouri. 

 Naturalized in continental Europe. Also called Daisy Fleabane. May-Nov. 



14. Erigeron ramosUs (Walt.) B.S.P. 

 Daisy Fleabane. (Fig. 3824.) 



Doronicum ramosum Walt. Fl. Car. 205. 1788. 

 E. strigosus Muhl.; Willd. Sp. PI. 3: 1956- 1804. 

 Erigeron ramosus B.S.P. Prel. Cat. N. Y. 27. 1888. 



Resembles the preceding species, but is usu- 

 ally lower and the pubescence more appressed. 

 Stem-leaves linear-oblong or linear-lanceolate, 

 nearly all of them entire; basal and lowest spat- 

 ulate or oblong, usually serrate; bracts of the 

 involucre glabrous or nearly so; pappus similar 

 to that of the preceding; rays white, or some- 

 times purplish, occasionally minute or wanting. 



In fields, Nova Scotia to the Northwest Territory, 

 south to Florida, Louisiana and Texas. May-Nov. 



Erigeron ramosus Beyrichii (F. & M. ) Smith & Pound, 



Bot. Surv. Neb. 2: 11. 1893. 

 Stenactis Beyrichii F. & M. Index Sem. Hort. 



Petrop. 5: 1838. 



Stem more slender; leaves narrower; heads 

 smaller; pubescence minute. Georgia to Nebraska 

 and Texas. 



