(107) 



Akenes pM'iform, papillate, gelatinous when 

 wetted; pappus 0. — 0. Flowers pale yellow. 

 Leaves alternate. 



1. B. Califoknicum Torr. & Gray. — Com- 

 mon. Spring. 



47. Helenium L- Sneeze-weed. 



Superflua. Flowers of the ray palmate. 

 Involucre 2-seriate; external scales oo, narrow, 

 foliaceous, spreading, at length reflexed; inter- 

 nal scales few, paleaceous. Receptacle globu- 

 lar, naked. Pappus 5 to 12, membranaceous 

 paleye. Flowers of the ray 3'ellow; disc pur- 

 ple; leaves alternate. 



1. H. PUBEKULUM DC. — 0. Moist places. 

 Summer. 



Tribe YI. Anthemide^. 



Receptacle rarely paleaceous. Scales of the 

 involucre scarious. Pappus not capillary. 



48. Anthemis L. May-weed. 



Superflua. Eay flowers ligulate. Scales of 

 the involucre imbricate. Receptacle convex or 

 conical, paleaceous. Akenes ribbed. Pappus 

 0. Ray-flowers wliite. Disc yellow. 



I. A. COTULA L. — 0. Common on waste 

 grounds, although not indigenous. Native of 

 Europe. 



