242 KEY AND FLORA 
(d) Akenes ovoid to spindle-shaped, long-beaked, 4—5-ribbed; 
pappus white, soft, and abundant. Taraxacum, XVII 
(e) Akenes nearly as in XVII; pappus tawny. 
Pyrrhopappus, XXI 
(f) Akenes not flattened, with or without beak, 10-ribbed ; pappus 
of abundant stiff, hair-like white bristles. | Agoseris, XX 
(g) Akenes flattened, beaked; pappus soft, white, the hairs soon 
falling off; leafy-stemmed herbs. Lactuca, XIX 
(h) Akenes flattened, not beaked; pappus abundant, soft, white; 
leafy-stemmed, spiny-leaved herbs. Sonchus, XVIII 
I. TUBULIFLORZ 
I. BELLIS L. 
Small herbs. Leaves usually all basal, petioled. Heads 
solitary, disk yellow, ray flowers white or pink; involucre 
bell-shaped ; bracts in 1 or 2 rows, green ; receptacle conical. 
Ray flowers many, in a single row, pistillate ; disk flowers 
tubular, bisexual, 4-5-toothed; forks of the style short, thick, 
tipped by roughened cones. Fruit flattened, obovate; pappus 
wanting. 
1. B. integrifolia Michx. American Datsy. A branching annual 
or biennial herb, 4-12 in. high. Upper leaves lanceolate or oblong, 
the lower ones obovate-spatulate. Heads borne on slender peduncles; 
rays violet-purple. Prairies, especially S.W. 
2. B. perennis L. Eneuisu Daisy, Scorcu Daisy. An apparently 
stemless perennial. Leaves obovate-spatulate, smooth or hairy. Heads 
a1 in. in diameter, very pretty, the rays delicate. Cultivated from 
Europe. 
II. ERIGERON L. 
Herbs. Leaves usually sessile. Heads many-flowered, flat 
or nearly hemispherical, the rays numerous, narrow, pistillate. 
Scales of the involucre narrow and overlapping but little. 
Akenes flattish, crowned with a single row of hair-like bristles, 
or sometimes with shorter bristles or scales outside these. 
Disk yellow, rays white, pinkish, or purple. 
B. Fl. species 5 (Leptilon). 
