202 46. COMPOSITE. 



Tribe III. Asteroidece. 



Fl. of ray female or neuter, ligulate (or in Linasyris 0) ; of 

 disk tubular. Anth. not tailed. Style-branches flattened with 

 a subconical tip. Leaves alternate. 



4. (7*) AS'TER Linn. Starwort. 



1. A. Tripolium (L.) ; at. glabrous corymbose, 1. linear-lan- 

 ceolate fleshy smooth, involucre imbricate, phyll. blunt mem- 

 branous the inner ones longer. E. JB. 87. R. xvi. 907. St. 1 

 2 feet high, erect, leafy, many-flowered. Heads large ; disk 

 yellow ; rays bright blue, often wanting. [A dwarf form branched 

 from the base, from N. of Scotl., is referred to var. arcticum (Fr.)]. 

 Muddy salt marshes. P. VIII. IX. E. S. I. 



[A. salignus (W.) is established in Wicken Fen, Cambridge- 

 shire, and A . longifolius l at and about Seggieden, Perth ; but they 

 are probably both escapes from gardens. A. Novi-Belgii (L.) 

 and other species are occasionally found.] 



5. (8.) EHIG'ERON Linn. Fleabane. 



*1. E. canaden'se (L.) ; st. much branched hairy panicled 

 many-headed, 1. linear-lanceolate ciliate. E. B. 2019. St. erect, 

 1 2 feet high. Heads many, small, yellowish. Inv. cylindri- 

 cal, scarcely shorter than the fl. of the ray, finally spreading. 

 Waste ground, rare (American). A. VIII. IX. E. 



2. E. acre (L.) ; st. corymbose, branches alternate, usually 

 1 -headed, 1. linear-lanceolate entire spreading, lower 1. narrowed 

 below, ray erect scarcely longer than the disk, inner female fl. 

 filiform many. E. B. 1158. JR. xvi. 917. St. erect, 618 in. 

 high, simple below, corymbosely branched- above, often several 

 from one root. Fl. yellow, the ray pale blue. Dry gravelly 

 places and walls. B. VII. VIII. Blue Fleabane. E. S. I. 



3. E. alpinum (L.) ; st. mostly with a single head, 1. lanceo- 

 late, lower 1. narrowed below, ray spreading twice as long as 

 the disk, inner female fl. tubular fllifor^n many. E. B. 464. 

 R. xvi. 914. St. 4 8 in. high, usually ending in a solitary 

 head with a yellow disk and light-purple ray. Inv. hairy. 



1 Prof. Asa Gray referred the Perthsh. plant to A. Novi-Belgii 

 H. & J. G. 



