506 



SYNGEKESIA JEftUALIS. 



607. CNICUS. Gen.pl 1255. 



lanceolatusi 1 . C. foliis decurrentibus hispidis pinnatifidis, lacinils bilobit 

 divaricatls spinosis, calycibus ovatis arachnoideo-pube- 

 scentibus, squainis lanceolatis spinosis patenttbus. 

 WUld.sp.pl. 3. p. 1666. 



Carduus lanceolatus. Sp.pl. 114Q. 



On road sides j common every where. <J . June — 

 Sept. V. V. Flowers large, purple. 



altissimus. 2. C. foliis sessiliLus oblongo-Ianceolatis scabris subtus to- 

 mentosis dentatis ciliatis, radicalibus pinnatifidis, caly- 

 cibus bracteatis ovatis, squamis ovato-lanceolatis spi- 

 nosis adpressis. IViLld. sp. pi. 3. p. 1671. 



Carduus altissimus. Sp. pi. 1154. 



Carduus virginianus. Walt.Ji. car. \Q5. 



Cirsium repandum. Mich.Ji. amer. 2. p. 89. 



Cirsium altissimura. Gron.Jl. virg. 11 7. 



In old fields : Virginia and Carolina. 1/ , July — Sept. 

 V. V. Flowers large, purple. 



arvensis. 3. C. foliis sessilibus pinnatifidis glabriusculis ciliatis spino- 



sis, caule paniculato, calycibus ovatis mucronatis, 

 squamis lato-lanceolatis adpressis margine lanatis. 



Carduus arvensis. Smithjl. Irit. 2. p. 850. 



Serratula arvensis, Willd. sp. pi. 3. p. 1646. 



Icon. FL. dan. 644. Engl. lot.gjS. Mart.Ji. rust. 132. 



In fields and on road sides : Canada and New England. 

 1/. July — Sept. V. V. Flowers small, purple. It 

 is one of the most troublesome weeds, and when once 

 introduced on a plantation it is almost impossible to 

 get rid of it. 



muiicus. 4. C. foliis omnibus pinnatifidis subtus lanuginosis : laci- 



niis spinulosis sublanceolatis acutis, ramis in summi- 

 tate pluribus nudiusculis unifloris, calyce globoso, 

 squamis muticis. 



Cirsium muticum. Mich.Ji. amer. 2. p. 89. 



Carduus carolinianus. Walt.Ji. car. 195. 



In the mountains of Virginia and Carolina. ^ . July — 

 Sept. V. V. Flowers middle-sized, purple. 



virginianus. 5. C. simpliciusculus j foliis sessilibus lanceolatis subtus 

 cano-tomentosis remote dentatis, dentibus spinosis, 

 floribus solitariis, calyce globoso, squamis mucronatis. 

 Carduus virginianus. Willd. sp.pl. 3. p. l65g. 

 Cirsium virginianum. Mich.Ji. amer. 2. p. QO, 

 * Icon. Jacq. ols. bot.4. t.gg. 



