246 



Composites Cosmidium. 



3-lobed leaves and .Zinnia-like scarlet flowers produced in 

 Autumn. And Hai^palium rigidum is another allied plant, 

 a native of North America, and quite hardy. It rises about 

 a yard high, and is furnished with opposite oval leaves and 

 yellow flower-heads about half the size of the Sunflower, but 

 much more numerous and of longer duration. 



20. COSMIDIUM. 



A small group of annuals of close affinity with Coreopsis ; 

 but the achenes are long and narrow,' and covered with minute 

 tubercles, and closely embraced by the bracteoles of the recep- 

 tacle, which fall away with them. The pappus consists of two 

 short stout bristles. Natives of North America. 



1. C. Burridgeanum. About 18 inches high. Leaves 

 finely cut. Capitules on long naked slender peduncles, about 

 2 inches in diameter. Ray-florets 

 about eight. In the original variety 

 the disk is purple, and the ray bright 

 orange with a purple spot at the base 

 of each floret ; but under cultivation 

 it has varied. One of the prettiest 

 variations, called atropurpureum, has 

 the heads of a crimson-purple bordered 

 with orange. 



C. filifblium has the rays entirely 

 yellow with a brown disk ; and (7. Eng- 

 elmdnnii is a dwarf species with 

 wholly yellow flowers. 



21. COSMOS (Cosmea). 

 Annuals or perennials with pinnate 

 leaves and solitary flower-heads. Ee- 

 ceptacle furnished with linear acute 

 coloured bracteoles, equalling or ex- 

 ceeding the florets. Achenes angular, 

 largest in the middle, crowned with 

 three or four rigid bristles. KoVyuoy 

 signifies beautiful or perfect. 



Fig. 134. Cosmos bipinnatus. 1- 0. UpinnotuS (fig. 134). All 



elegant annual about 2 feet high. 



Flowers rose or purple with a yellow eye, appearing late in 

 Summer. Mexico. 



