Composites A mmobium. 



259 



account of the central achenes being abortive and the outer 

 fertile ones being broad and flat with a pappus of barbellate 

 bristles. It is the only species, an annual from 1 to 2 feet 

 high with a rough or woolly 

 pubescence and corymbose 

 flower-heads. Outer invo- 

 lucral bracts brown, inner 

 clawed, with a spreading 

 white or pink limb. 



We might extend this 

 enumeration, but as they are 

 chiefly delicate annuals we 

 believe we have given an 

 ample selection. 



33. AMMOBIUM. 



This genus also belongs 

 to the Everlasting group, 

 but it differs from all the 

 preceding genera in having 

 scales or bracteoles on the 

 receptacle between the 

 florets, and quadrangular 

 achenes crowned with a 

 membranous cup-like pap- 

 pus. There are only two 

 species, both Australian. 

 The name is from a'/*//,oy, 

 sandy sea-shore, and {3io$, 

 life, in allusion to the habi- 

 tat of the following species. 



1. A. alatum (fig. 145). 

 Annual or perennial, 

 about 18 inches high. Stems 

 winged ; leaves sparse. In- 

 volucral bracts white ; florets 

 all tubular, yellow, exceed- 

 ing the involucre. 



Pig. 145. Ammobium alatum. ( nat 



