SYNGENESIA. 191 



rally in the woods. The racemes of many of the species are 

 one sided. 



GENUS Dahlia. Name in honor of Andrew Dahl, a Swe- 

 dish botanist, and pupil of Linnaeus. This is a small genus 

 of very showy and easily cultivated plants. They are gene- 

 ral favorites, not only on account of their fine appearance, but 

 also because they .are in full flower, when most of the beauties 

 of the garden are out of season. This genus came originally 

 from Mexico, and we believe, consists of only two species, 

 though the varieties produced by cultivation, are almost end- 

 less. They may be propagated by cuttings, either from the 

 young shoots, early in the summer, or from the shoot roots in 

 the spring. Any number of varieties of the single kind may 

 be produced by sowing their seeds. 



GENUS Chrysanthemum. Name from the Greek, chrusos, 

 gold, and anthos, a flower, because several of the species 

 bear flowers of a golden yellow. The species of this genus 

 are numerous, and the cultivated varieties are forty or fifty in 

 number. It is a popular flower in China, whence most of the 

 varieties now so fashionable in England and America have 

 been derived. They are hardy green-house plants, which 

 flower in thick heads of various colors, chiefly in the months 

 of November, December and January. These plants maybe 

 propagated by cuttings taken from the side branches at any 

 season, from April to September. The same may be done 

 by suckers. 



ORDER III. SYNGENESIA FRUSTRANEA. 



In this order the florets of the disk have both stamens and 

 pistils like those of the last order, but in that, the florets ot 

 the ray have pistils only, while in this, those of the ray have 

 neither stamens nor pistils, and hence the name Frustranea 

 which signifies vain, or ineffectual. The order embrace? 

 many showy genera, several of which are cultivated and 

 highly esteemed as ornamental flowers. Such are the Sun 

 flower, Rudbeckia, Coreopsis, Centaurea, and others. 



GENUS Helianthus. Sun flower. Name, from the Greek 

 elios, the sun, and anthos, a flower. " Nothing can be a more 



Whence does the genus Dahlia derive its name 1 From what country 

 was this genus derived 1 How may the Dahlia be propagated ? How 

 does the genus Chrysanthemum derive its name? How does the ordei 

 Frustranea differ from superflua ? 



