Spring Flora of Oklahoma 
185 
terete, 10-ribbed, beaked. Pappus of numerous simple 
white bristles. 
1. Agoseris cuspidata (Pursh.) D. Dietr. Prairie False Dan¬ 
delion. Leaves linear, pubescent or glabrate, 4'-8' long, their mar¬ 
gins conspicuously white-tomentose and crisped, or entire. Scape 
tomentose. Head l'-2f broad. 
In dry soil. April-July. Frequent. 
IX. SITILIAS Raf. 
Annual or perennial, with alternate or basal leaves, and 
mostly large, solitary or few heads of yellow flowers, borne 
on long, usually bracted peduncles. Involucre oblong or 
campanulate, bracts in several series. Rays truncate, 5- 
toothed. Achenes oblong or fusiform, 5-riobed, rough¬ 
ened or hirsute, abruptly narrowed into a long, filiform 
beak. Pappus of numerous soft, simple, brownish, some¬ 
what unequal bristles, surrounded at the base by a villous 
white ring. 
Stem leafy, usually branched; plant glabrous, or near¬ 
ly so. 1. S. caroliniana, 
Scape naked, monocephalous; plant hirsute, or pubes¬ 
cent. 2. S. grandiflora. 
1. Sitilias caroliniana (Walt.) Raf. Leafy-stemmed False 
Dandelion. Annual or biennial, glabrous or nearly so. Stem leafy, 
usually branched, l°-3° high. Basal leaves oblong or oblong-lance¬ 
olate, pinnatifid, lobed, coarsely dentate or some of them entire, 3'-8' 
long. Stem-leaves sessile or partly clasping, the upper lanceolate, 
entire. Heads 1 or several, l'-l%' broad. 
In dry fields. April-July. Infrequent. 
2, Sitilias grandiflora (Nutt.) Greene. Rough False Dande¬ 
lion. Hirsute or pubescent. Root tuberous-thickened. Leaves all 
basal, oblong or spatulate in outline, deeply pinnatifid, 3'-7' long. 
Scape naked or sometimes with a small leaf near its base. Heads 
solitary, l'-2' broad. 
On prairies. April-June. Common. 
FAMILY 90. COMPOSITAA3. Thistle Family. 
Herbs, rarely shrubs, with watery or resinous sap, and 
