224 COMPOSITE FAMILY 



irregular, strap-shaped ray-flowers. The flowering-head is 

 called radiate, the center is called the disk, and has tubular 

 disk flowers. 



GROUP III 



The rush weed (see illustration), typical of this group, 

 has flowers of only one form — irregular, one-lipped ray- 

 flowers, whose prolonged lip is strap-shaped. Such flowers 

 are also known as ligulate. The sap of this group is 

 milky. 



GROUP I. Flowers alike, tubular, 4-lobed or 5-lobed. 



The purple blazing stars, Liatris, ornament dry pine- 

 lands in autumn with many wandlike stems along whose 

 graceful length are set numerous flowering-heads. With 

 the blazing stars, and also in damp soil, the paint-brush, 

 Carphephorus, brilliant in lighter purple, is easily identi- 

 fied by its flat-topped inflorescence, which has a relatively 

 short period of bloom and soon changes to gray. 



A beautiful low shrub, Garberia, growing in dry sand, 

 crowns its many branches with clusters of delicately col- 

 ored fragrant flowering-heads of pale purple or pink, and 

 is admirable for ornamental planting. 



The purple Trilisa paniculata blooms in damp pinelands 

 from October to December in royal color. Its branched, 

 cylindrical inflorescence is sticky to the touch, and is 

 strongly scented. The taller vanilla-scented T. odoratis- 

 sima differs from the preceding in its smooth stems and 

 broader inflorescence. The leaves become fragrant in 

 drying, and keep their odor for many months. 



The graceful dog-fennel, Eupatorium capilli folium, is 

 often abundant in dry soil and on roadsides, where groups 

 of its tall stems bend to the breeze. The myriads of mi- 

 nute white flowering-heads, scattered along slender droop- 



