242 KEY AND FLORA 
(/) Akenes ovoid to spindle-shaped, long-heaked, 4—5-ribbed; 
pappus white, soft, and abundant. Taraxacun, XVII 
(©) Akenes nearly as in NVIL; pappus tawny. 
Pyrrhopappus, XI 
(/) Akenes not flattened, with or without beak, 10-ribbed ; pappus 
of abundant stiff, hair-like white bristles. Agoseris, XX 
(y) 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, XVII 
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 inany, 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 Daisy. A branching annual 
or bieunial herb, 4-12 in. high. Upper leaves lanceolate or oblong, 
the lower ones obovate-spatulate. Heads borne on slender peduncles; 
yays Violet-purple. Prairies, especially S.W. 
2. B. perennis L. ENGuisi Daisy, Scorcm Daisy. An apparently 
stemless perennial, Leaves obovate-spatulate, smooth or hairy. Heads 
¢—-l 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. 
Seales 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), 
