506 



6YNGENESIA iSftUALIS 



lanceolatus. 



aUissimus. 



muticus. 



virgimamis. 



607. CNICUS. Gen.pl. 1255. 



1. C. folils decurrentibus hispidis pinnatifidis, laciniis bilobis 



divaricatis spinosis, calycibus ovatis arachnoideo-pube- 



scentibus, squamis lanceolatis spinosis patentibus- 



Wilid.sp pi. 3. p. ]Gd6. 

 Carduus lanceolatus. Sp.pl. Il4g. 

 On road sides 5 common every where. <?. June — 



Sept. V. V, Flowers large, purple. 



2. C. foliis scssilibus oblongo-lanceolatis scabris subtus to- 



mentosis dentatis cilia:is, radicalibus pinnatifidis, caly- 

 cibus bracteatis ovatis, squamis ovato-lanceolatis spi- 

 nosis adpressis. IV did. sp. pi. S.p.lGyi, 



Carduus altissimus. Sp.pl. 1154. 



Carduus virginianus. Walt. Jl. car. ig5. 



Cirsium repandum. Mich.Jl. amer. 1. p. 89, 



Cirsium altissimum. Groii.Jl. virg. II7. 



In old fields : Virginia and Carolina. % . July — Sept. 

 V. V. Flowers large, purple. 



3. C, foliis sessilibus pinnatifidis glabriusculis ciliatis spino- 



sis, caule paniculate, calycibus ovatis mucronatis, 

 squamis lato-lanceolatis adpressis margine lanatis. 

 Carduus arvensis. Smithji. hrit. 2. p. 850, 

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

 Icon, F/, 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. 



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.Jl: amer. 2. p. 89. 

 Carduus carolinianus. IFalt.Jl. car. 1Q5. 

 In the mountains of Virginia and Carolina, c?. July — 



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



5. C. simpliciusculus ; foliis sessilibus lanceolatis subtus 



cano-tomentosis remote dentatis, dentibus spmosis, 

 floribus solitariis, calyce globoso, squamis mucronati?. 



Carduus virginianus, IVilld. sp.pl. 3. p. I659. 



Cirsium virginianum. Mich.fi. amer. 2. p. QO. 



Icon. Jaccj. obs. hot. 4. t. 99. 



