100 39. COMPOSITE. 



C. crispus], or solitary, on long peduncles. Fl. deep purple or 

 white. The form with aggregated heads is common. 



In 1813 Hopkirk remarked, "Abundantly in the waste ground beside St. George's 

 Church !" Still frequent in the vicinity of Glasgow; near the Townsmill, on the 

 banks of the Molendinar burn ; near Pollokshields, Cathcart, &c. (B) A. B. 6 8. 



3. C. TENUIFLORUS, Curt. Slender -Floiuered Thistle. Stem 

 2 4 ft. high. Le. lanceolate, sinuate, shortly spiiious, decurrent 

 along the stem as a prickly wing, downy or cottony beneath. Fl. - 

 heads small, numerous, generally in clusters, cylindrical, sessile. 

 Involucral scales broad at the base, attenuate, terminating in an 

 erect prickle. Fl. pink or white. 



Very rare. Waste sandy places near the sea. (E) A. B. (! 8. ''About 

 Balvie," Hopk. Near Largs. 



B. Leaves with white veins. 



*4. C. MARIAN-US-, L, Milk- Thistle. Stem 35 ft. high, 

 slightly branched. Radical le. deeply pinnatifid, lobes broad, 

 prickly, upper ones large, waved spinous, amplexicaul with 

 prickly auricles, smooth and shining above^ variegated with white 

 veins and blotches. Fl. -heads large, globose, drooping, involucral 

 scales broad at the base, terminated by a long recurved spine, 

 bordered by lateral prickles. Florets purple. 



Very rare. " Dumbarton Castle," HopJc. Occasionally escaping from gardens. 

 B. 7. 



14. CNfcus. Plume-Thistle. 



1. C. LANCEOLATE, Willd. Spear Plume-Thistle. Stem 2 4 

 ft. high. Le. pinnatitid, segments narrow, long, ending in. a stiff 

 prickle, decurrent along the stem, rough with short stiff hairs 

 above, cottony beneath. Fl. -heads nearly solitary, large. Invo- 

 lucres ovate with cottony down; scales lanceolate, terminating in 

 a stiff spreading spine. Fl. purple. 



Common. Pastures and waste places. (B) B. 78. 



2. C. PALUSTRIS, Willd. Marsh Plume- Thistle. Stem 45 

 ft. high, erect, scarcely branched. Le. narrow, pinnatifid, wavy, 

 spinous, decurrent along the stem in wavy prickly lobes, scabrous. 

 Fl. -heads very numerous, clustered, small. Involucral scales 

 broad, keeled, adpressed, ending in a spine. Florets purple, 

 often white. 



Common. Wet meadows and moist banks. (B) B. 78. Possil marsh; 

 Paisley Canal bank, &c. 



3. C. ARVENSIS, Hoffm. Creeping Plume-Thistle, Way -Thistle. 

 Rhizome creeping. Stem 3 4 ft. high, scarcely branched. Le. 

 narrow, pinnatifid, wavy, very prickly, sessile or slightly decur- 



