192 
Spring Flora of Oklahoma 
Plants 6'-3° high, erect, branched; pappus double. 
Pappus of the ray-flowers and disk-flowers unlike. 
Stem leaves lanceolate, nearly all sharply 
serrate. 4. E. annuus. 
Stem leaves linear-lanceolate or oblong, nearly 
all entire. 5. E. ramosus. 
Pappus of the ray-flowers and disk-flowers alike; 
|plant hirsute. 6. E. tenuis. 
1. Erigeron philadelphicus L. Philadelphia Fleabane. Per¬ 
ennial by stolons and offsets, slightly pubescent, 12'-36' high. Basal 
and lower leaves spatulate or obovate, dentate, l'-3' long. Upper 
stem leaves clasping, dentate, or entire. Heads corymbose-paniculate, 
5"-12" broad. Peduncles thickened at the summit. Rays 100-150, 
2"-4" long, light rose, purple, to pinkish. Achenes puberulent. 
In fields and woods. April-August. Common. 
2. Erigeron divergens T. & G. Spreading Fleabane. Annual 
or biennial, 6'-15' high, densely cinereous-pubescent or hirsute. Basal 
and lower leaves spatulate or oblanceolate, entire, dentate or lobed, 
P-2' long, the upper sessile, linear. Heads 8"-12" broad. Involucre 
hemispheric. Rays about 100, purplish, violet, or nearly white, 
2"-4" long. Pappus double, the shorter outer row of bristles sub¬ 
ulate. 
In moist soil. April-September. 
3. Erigeron Bellidiastrum Nutt. Western Daisy Fleabane. 
Annual, 6'-15' high, cinerous-pubescent throughout. Leaves eiitire, 
linear, spatulate, the lower petioled, V-IV 2 ' long, the upper sessile, 
and smaller. Heads 5"-8" broad. Rays 30-65, purplish, about 2" 
long. Pappus a single series of capillary bristles. 
In moist soil. May-July. Kingfisher and Oklahoma Counties. 
4. Erigeron annuus (L.) Pers. Sweet Scabious. Daisy Flea- 
bane. Annual, pubescent with spreading hairs. Stem stout, l°-4° 
high. Leaves coarsely and sharply toothed, the lowest ovate, the 
upper ovate-lanceolate. Heads corymbed. Rays white, tinged with 
purple. Pappus double, the inner a series of slender bristles, the 
outer short, slender scales. 
Fields. May-November. Payne County. 
5. Erigeron ramosus (Walt.) B. S. P. Daisy Fleabane. Re¬ 
sembling No. 4, but lower, with appressed pubescence. Stem leaves 
linear-oblong or linear-lanceolate, nearly all entire. Basal and low¬ 
est spatulate or oblong, usually serrate. Bracts of the involucre 
nearly glabrous. Rays white or sometimes purplish. 
In meadows and prairies. Common. July-August. 
6. Erigeron tenuis T. & G. Slender Rough Fleabane. Annual 
or biennial. Branched from the base, strigose-pubescent. Stems 
