39. COMPOSITES. 99 



fid, midrib hairy. Stem le. small, amplexicaul, auricles pointed, 

 entire. Fl. -heads generally in pairs, axillary nearly sessile, 

 numerous. Fl. bright blue. 



Very rare, and only near gardens. (E) P. 7 10. "In a field near Belvidere, 

 and one near Tollcross," Hopk. Banks of the Kelvin near the grinding mill, 

 but truly an escape. Uddingston. 



TRIBE 2. CYNAROCEPHAL^. Thistle Tribe. 



11. A'RCTIUM. Burdock. 



A. LAPPA, L. Var, minus, Schk. Stem upwards of 3 ft. high. 

 Radical le. very large, coarsely toothed, cordate at the base, lobes 

 prolonged; clothed underneath with a close white tomentum, 

 above with short down; petioles tubular. Fl. -heads racemose, 

 terminal, shortly stalked, globular. Involucral le. not so long as 

 the florets, webbed. Plant downy, with purple flowers. 



Frequent. Roadsides and waste places. (B) B. 78. Farm-house beyond 

 Clyde Iron-works; Cambuslang; Carmyle; Rutherglen; Gourock; Cumbrae 

 and Bute ; Arran, J. G. Baker. 



Var. intermedium, Lange. Fl. -heads subracemose, larger than 

 the last, with longer peduncles. Involucral le. equalling the 

 florets, much webbed. 



Island of Arran, /. G. Baker. 



12. SERRATULA. Saw-wort. 



* S. TINCTORIA, L. " Stem 2 3 ft. high, branched, stiff. Le. 

 usually pinnatifid or lyrate, and finely serrate. Sometimes entire 

 and without serratures. Fl. purple," H. & A. 



"Banks of the Clyde, between Daldowie and Bothwell," Hopk. (E) P. 8. 



13. CARDUUS. Thistle. 



A. Leaves without white veins. 



1. C. NUTANS, L. Music-Thistle. Stems erect, 2 3 ft. high, 

 stout. Leaves deeply sinuated or pinnatifid, very prickly ; de- 

 current along the stem as prickly wings, covered with loose 

 cottony hairs. Fl. -heads large, mostly solitary, drooping. Fl. 

 purple or crimson. Outer scales of the invulucre ending in a 

 reflexed prickle, cottony ; inner ones linear, acute. 



Very rare. " At Mauldslie," Pair. (E) B. 510. 



2. C. ACANTHOIDES, L. Welted- Thistle. Stems 3 4 ft. high, 

 much branched. Le. sinuate, pinnatifid, spinous, decurrent along 

 the stem as prickly wings ; more thickly spinous than the last, 

 smooth, or cottony beneath. Fl. -heads aggregated (forming the 



