^ 



SYNGENESIA SUPERFLUA. 357 



Giilato, glabro, ramis 

 virgatis; involucris im- 

 bricatis. 





paniculate, . glabrous, 

 branches virgate; in- 

 volucrum imbricate. 



Sp. pi. 3. p. 2050. Pursh, 2. p. 557. Nutt. 2. p. 158. 



Stem two to four feet high, with long slender branches, slightly pubes- 

 cent. Leaves sessile, narrow, lanceolate, serrate, glabrous; those of the 

 branches entire. Flowers small, in racemes at the end of the virgate bran- 

 dies, on peduncles two to four lines long. Scales of the involucrura linear- 

 lanceolate, acute, nearly glabrous. Florets of the ray (sixteen to twenty > 

 narrow, pale purple, ^eeds somewhat pubescent. ^'^ 



I know not whether my reference of this plant is correct. I have of it 

 apparently two varieties, one with leaves longer and more acutely serrate 

 than the other and with flowers somewhat longer; but in habit similar. 



^rows m damp soils, along ditches, swamps, &c. 



Flowers September — October. 



29. DlVERGENS. Ait. 



A. foliis elliptico-lan- I Leaves elliptic lan- 



ceolatis, serratis, gla- ceolate, serrate, gJa- 

 bris, caulinis lineari- brous, those of the stem 

 lanceolatis; ramis pa- linear-IanceoJate; bran- 

 tentibus; involucris im- I ches expanding; invo- 

 bricatis; caule pubes- I lucrum imbricate^ stem 

 ^^*ite. I pubescent, 



Sp. pi. 3. p. 2052. Pursh, 2. p. 558. Nutt. 2. p. 159. 



Stem two to four feet high, with the summit and numerous branches 

 pubescent. Leaves lanceolate, very acute, finely serrate, glabrous; the 

 sraaU ones on the branches as usual entire. Flowers in somewhat crowded 

 ijcemes on the expanding branches on peduncles one to three lines long. 

 ^caies of the involucrum linear-lanceolate, imbricate, nearly glabrous. 



M \?^*^^ '■^y ^^'^'^^J *'"g^d ^'^^^ purple. Seeds somewhat pubescent. 



ijlr. Nuttall considers the A. Diffusus of Alton, and the A. Pendulus, Ait. 



With long divaricate pendulous branches as only varieties of the present 



pecies. The last would appear from description to approach very nearly 



rnlt ; i""f f ""^ **"'" ^^^^''^- ^^ *h^y «^'0"ld prove the same plant, they 

 must 1 think be separated from A. Divergens. 



wows in woods in moderately fertile soils. 



October. 



