DICOTYLEDONS. COMPOSITE. Chrysanthem. 243 



A. tripolium). Receptacle naked. Florets of the ray more 

 than 10. Pappus simple. 



1 . A. Tripolium, stem glabrous corymbose, leaves linear-lanceo- 

 late fleshy obscurely 3-nerved, scales of the involucre lanceo- 

 late membranous obtuse imbricated, p. 244. Salt marshes. 



30. SOLIDAGO. 



Involucre imbricated, its scales connivent. Receptacle naked* 

 Florets of the ray (of the same colour as the disk) about 5- 

 Pappus rough. 



1 . S. Virgaurea, cauline leaves lanceolate, the lower ones ellipti- 

 cal, racemes panicled erect crowded, p. 245. Mountain pas- 

 tures. 



31. INULA. 



Involucre imbricated. Receptacle naked. Florets of the ray 

 very numerous, linear. Anthers, with 2 bristles at the base. 

 Pappus sometimes simply composed of hairs, sometimes dou- 

 ble ; the ext. membranous. 



1. I. Helenium, leaves amplexicaul somewhat toothed ovate rug- 

 ged downy beneath, scales of the involucre downy, p. 245. 

 Waste places about buildings. 



2. I. dysenterica, leaves oblongo-cordate amplexicaul rugged 

 downy, stern woolly panicled, scales of the involucre setaceous. 

 p. 245. Moist places. 



3. I. crithmoides, leaves linear fleshy generally 3-pointed. p. 245. 

 Sea-shore. 



32. DORONICUM. 



Scales of the involucre in 2 equal rows, longer than the disk. 

 Receptacle naked. Pericarps of the disk crowned with a sim- 

 ple pappus, those of the ray without a pappus. 



1. D. Pardalianches, leaves cordate repando-dentate, radical 

 ones petiolate, cauline ones amplexicaul. p. 245. Fields and 

 hedges. 



33. BELLIS. 



Involucre hemispherical, its scales equal. Receptacle naked, 

 conical. Pappus none. 



1. B. perennis, scape naked single-flowered, leaves obovate cre- 

 nate. p. 246. Pastures. 



34. CHRYSANTHEMUM. 



Involucre hemispherical, imbricated with scales whose borders 

 are membranous. Receptacle naked. Pappus none. 



1. Ch. Leucanthemum, leaves amplexicaul oblong obtuse cut 

 pinnatifid at the base, radical ones obovate petiolate, stem 

 erect branched, p. 240. Dry pastures. 



2. Ch. segetum, leaves amplexicaul glaucous inciso-serrate above 

 toothed at the base. p. 246. Corn-fields, 



[a 2] 





