SUMMER CHRYSANTHEMUM 



With us they are largely, if not principally, forced in the green- 

 houses for the spring trade, and as a rule are not cultivated in our 

 gardens. But those who do cultivate them recommend them as 

 hardy and easily grown. They seem better able to withstand our 

 winters than to endure our summers. They must have a cool, 

 moist root-run, and being surface-rooting plants suffer if imder the 

 direct rays of our hot summer sun. Doubtless there is a place in 

 every garden where they would flourish, and it is certainly worth 

 while to take the trouble to find it. 



SUMMER CHRYSANTHEMUM. KEELED CHRYSANTHEMUM 



Chrysdnthemum carinatum. Chrysdnthemum tricolor. 



The most brilliant of the annual Chrysanthemums, easily distin- 

 guished by the keeled or ridged scales of the involucre and the dark- 

 purple disk. 



Stem. — Erect, much-branched, about 

 two feet high. 



Leaves. — Cut to the midrib, segments 

 narrow, irregular, and fleshy. 



Flower-heads. — Solitary, on stems or 

 branches; rays broad, three to five-lobed, 

 white with a yellow ring at base; have 

 varied into many different forms; disk- 

 florets dark-purple. 



Involucre. — ^With about three rows of 

 ridged or keeled scales and an upper row 

 of scarious scales. 



Receptacle. — Slightly convex. 



Pappus. — A minute crown. 



The Summer Chrysanthemum, or 

 Keeled Chrysanthemum, so named be- 

 cause of the ridges on the involucral 

 scales, is the most brilliant of all the 

 annual chrysanthemums. The primi- 

 tive of this garden race was brought into England from Morocco 

 in 1798. It attracted great attention from the first. Because of 



471 



Summer Chrysanthemum. 

 Chrysdnlhemum tricolor 



