42 Centaurcd .Imcr'icana. 



quiring no care whatever, other than the preservation of its seed, for 

 its perpetuation, it is well suited to open borders. 1 have observed, 

 however, in the gardens of Messes. Landreth, whence I obtained 

 the specimens from which the drawing was made, that its habit was 

 rather debile, and seemed to require props: a circumstance probably 

 owing to accident, since it is described by its discoverer to be from 

 four to six feet high, and the habit of robust specimens appears to 

 be erect, as represented in the table. 



Fig. l. Represents a flowering portion of the plant. 



2. A flower-bud, with the leaves cut off! 



3. A fertile floret. 



4. A neutral floret. 



5. Exterior calicine scale. 



6. Interior or upper calicine scale. 



(All the size of nature.) 



