264 FLOWERS OF GARDEN AND GREENHOUSE 
lishéd. Clumps at intervals in the herbaceous border also look well, 
No special directions are needed for their treatment. 
Description of The cultivated form of Bellis perennis. The separate 
Plate 129. flowers are from different varieties, to show the colour 
range. Fig. 1 is a ray-floret; 2, one of the quilled forms; 3, a section of 
the same. 
MICHAELMAS DAISIES 
Natural Order Compostrx, Genus Aster 
ASTER (Latin, aster, a star, from the rayed flower-heads). A large 
genus (about one hundred and fifty species) of perennial herbs, with 
radical or alternate leaves, and usually radiate flower-heads, The disk- 
florets are yellow, tubular, five-toothed and bisexual; the ray-florets in 
a single series, strap-shaped, white, blue, or purple. The involucre 
consists of several series of herbaceous bracts. Pappus-hairs in several 
series, rough and persistent, unequal in length. The species are chiefly 
American, but the genus is represented in most cold and temperate 
d 
World. A. alpinus, however, came from Europe in 1658. A. Nove- 
Anglie was introduced from North America in 1710, A. grandiflorus 
pendulus in 1758, A. spectabilis dates from 1777, A. elegans from 1790, 
