(69) 



2. Holozonia. Involucre 1-seriate, each 

 scale completely embracing a ray akene. 

 Pappus of the ray hyaline. 



3. Lagophylla. Bay flowers 5, cuneiform, 

 3-lobecl. Involucre of 5 scales, each 

 completely enclosing a ray akene. Ke- 

 ceptacle flat. Palete 5, between disc 

 and ray. Pappus 0. 



4. Blennosperma. Scales of the involucre 



1-seriate, united at the base, not em- 

 bracing the akene. Pappus 0. 



5. Artemisia. Involucre imbricate, scar- 

 ious. Flowers of the ray slender, dentate. 



6. Soliva. Flowers of the ray oo-seriate, 

 without corolla. Pappus 0. 



7. Nardosrnia. Pappus pilose. 



B. Receptacle villous. 



1. Artemisia. 

 G. Receptacle paleaceous. 



a. Anthers obtuse or sagittate at their 

 base, but not calcarate. 



1. Lagophylla. Rfty flowers 5, cuneiform, 

 3-lobed. Involucre of 5 scales, each 

 completely enclosing a ray akene. Re- 

 ceptacle flat. Palese 5, between disc and 

 ray. Pappus 0. 



2. Holozonia. Involucre 1-seriate, each 



scale embracing completely a ray akene. 

 Pappus of the ray hyaline. 



