2.')6 SYNGEN. POLYGAM. .i:(iUAL. 



winged. Leaves oblong, deeply sinuuted. Flowers solitary, lurgc, 

 handsome, pui))le; said to smell jjowerfully of muak in warm wea- 

 ther : most HO in the evening according to Liglitf. 



2. C. aca?it/ioides {welted Tlihlle), leaves decurrent sinuatcd 

 spinous, involucre globose nearly sessile its scales linear slightly 

 recurved. Ligfitf. p. 4")2 (C. crispus). E. B. t. 07^. 



Hah. W^ay-sides and waste places j varying with white flowers. Fl, 



June, July. ©. 

 Three to four feet higli, uninterruptedly winged, branched. Flowers 



clustered at the ends of the branches, deep pin-|)le. 



3. C. tcnuijlorus [sleiuJer-Jlowei ed Thistle), leaves decurrent si- 

 nuated spinous somewhat cottony beneath, involucres nearly 

 cylindrical clustered sessile their scales lanceolate erect. 

 Light/, p. 452 ( C. tevvifiorns) . E. 13. /. 4 12. 



IIai«. \Vaste places near towns, especially by the sea-coast. Abun- 

 dant about Edinb., Maui^h. About Balvie, near Glasg., Hopk. 

 Fl. June, July. O- 



Two to four feet high, winged the whole way u]) tiiestem with the de- 

 current bases of the leaves, Kojccrs small, pale })urple, 



** Leaves sessile. 



4. C. wnrianus {][^ ilk- thistle), leaves amplexicaul waved spi- 

 noiis, the radical ones pinnatifid, scales of the involucre sub- 

 foliaeeous recurved spinous at the margin. Lightf, p. 454. 

 E. B. t. 97G. 



Hab. JJanks and waste places about towns and villages. Castle rock 

 at Edinb., J)r. Parsoits. King's Park, Edinb., Mangh. Rock of 

 Dumbarton castle, //o/)/,-,, (S:c. F/. July. ©. 



Three to five feet high. Distinguishable at once by the milky veins 

 on the leaves and the great recurved scales of the involucre. 



IG. CNICUS. 



* Leaves decurrent. 



1. Cn. Imiceolatns {Spear-thistle), leaves decurrent hispid 

 pinnatilid their segments generally two-lobed sj)reading spi- 

 nous, involucres ovate tomentosc their scales lanceolate 

 spreading. Lighlf. p. 450, and />". /j. /. l07 {Cardans lane), 



ILvu. \A'ay-sides, frequent. H. July, Aug. S- 

 Three to four feet higli. Leaves downy beneath ; point long, very 

 sharp. Flowers standing singly, large. 



2. Cn. pahistrls {Marsh-ihistle), leaves decurrent scabrous pin- 

 natilid spinous, involucres ovate clustered their scales ovato- 

 lanceolate niucronate appressed. Lightf. p. 452, and E. B. 

 /.974 {Car duns pal.). 



Hab. Moist meadows and shady places, frequent. 77. July. ^. 



Four to six feet high, vtry fidl of rather short spines, very erect. Re- 

 markable for its clustered heads o( /lowers, whose involucres have 

 the scales broad, appressed, keeled^ aiul mucronated. 



