122 CORYMBIFERJE. [Cl. 10. 



or sometimes without rudiments of any. Common 

 Calyx of 1 leaf, or of many ; either simple, or sur- 

 rounded by a smaller exterior Calyx, or imbricated 

 throughout : containing in general numerous Florets, 

 sometimes but a few, or only one ; the Common Re- 

 ceptacle being either naked, or clothed with hairs or 

 scales, fig. 69, separating the Florets. The Florets are 

 almost universally 5-cleft, rarely 3- or 4-cleft; the 

 number of Stamens corresponding therewith : ligulate 

 ones either entire or toothed at the end. Anthers very 

 rarely unconnected. Stigmas a continuation of the 

 Style; 2 in the perfect and fertile Florets; single, or 

 wanting, in the barren and neuter ones. Seed either 

 naked, or crowned with scales or down. Plants herba- 

 ceous, sometimes shrubby. Leaves more frequently al- 

 ternate than opposite. Disk of the Flowers mostly 

 yellow ; rays often of the same, not unfrequently of a 

 different, colour." 



The 2d, 3d, and 4th Orders of Linnoeus's Synge- 

 nesia (Polygamia-superflua, P. frustranea and P. ne- 

 ccssaria?) compose this Order ; as well as what Jus- 

 sieu terms Corymbifertf anomalte, having perfectly 

 separated Florets, either in the same Common Calyx, 

 or in 2 different ones, on different plants, their An- 

 thers being convergent, but not united. These last, 

 wanting the Syngenesious character, Linnaeus has 

 placed, with much violence to nature, in his Monoecia, 

 Class 21. Iva, Clibadium, Parthenium, Ambrosia, 

 Xanthium, and Nephdium are the genera. They make 



