8YNGEN. POLYGAM. .T.GlUAL. 2^7 



** Leaves sexsile. 



3. Cn. arvemis {creeping Thiule), leaves sessile pinnatifid spi- 

 nous, stem panicled, involucre ovate, scales appressed mucro- 

 nated. Liglilf. p. 449 {Serrahda arv.). E. B. t. i)75 {Car- 

 duvs arv.). 



Har. Fields und by way-sides, too abundant. Fl. July. % ■ 

 One foot to throe teet h'igli. Stemx angadar, but not winched. 



4. Cn. eriopliorus [woolly -headed 'iliisUe^, leaves sessile pinna- 

 tifid every other scpneut pointinj^ upwards spinous scabrous, 

 involucre's spluerical woolly. L'/ghtf. p. 454, and E. B. t.HHG 

 {Cardnus crioph.). 



Hab. Road-sides, Ike, but rare. Sea-side between Blackness and 

 the Queensferry ? Sibbald. Road-side near (Jxenford Castle and 

 Chesterhall, 9 m. from Edinb., Mattgh. Dumbarton Castle r Mr. 

 Murray. Ai^inn, Capf. Carmicliael. /"/.July. (^ . 



Stems much branched, 3 feet high, the stoutest of th(> genus furrowed. 

 JLertiTsacuminatcd, white, and downy beneath; the lobes alternately 

 pointing upwards and downwards, and terminated with sharp spines. 

 Involucre very large ; its scales linear, mucronate, very much in- 

 terwoven with a woolly substance. 



5. Cn. Iieicroplujllas {melancholy Thistle), leaves ainplexicaul 

 lanceolate ciliato-dentate undivided or laeiniated white and 

 downy beneath, flowers mostly solitary. Lightf. p. 4.')6 {Car- 

 dum hetcrophyllus), and p. 4G7 {Carduus heltnioides). E. B. 

 t. 67-T {Carduus heteroph.). 



Hab. Marshy places and on wet hills, especially in the lligldands. 



RossLyn and Aucliindenny woods, Maugh. Daldowie, near Glasg., 



Dr. Brown. Fl. July. 2/ . 

 Two to three feet high. .SVew.v striated, and, as well as the underside 



of the leaves, covered with a white, cottony down. Leaves mostly 



radical, and tliese petiolatcd. Involucre oblong, da)-k green ; its 



scales lanceolate, acuminate, but not spiny. 

 G. Cn. pratensis {Meadow Thistle), leaves sessile lanceolate 



waved at the edge and unequally spinous pubescent cottony 



beneath, flowers mostly solitary. E. B. t. 177. 

 Hab. Moist pastures in Loch-na-daal, Isla, Dr. IVallcer. I tliinlv Mr. 



Murray brought an indifferent specimen of it from ATan. /'7. July, 



'U. 



About 1 f. high. Leaves waved, toothed and spiny. Flower solitaiy j 

 scales of the involucre with short spines, lanceolate, closely imbri- 

 cated. 



7. Cn. acaulis {dwarf Thistle), stendess, involucre glabrous. 

 Light/', p. 458, and E. B. t. 161 {Carduus acaulis). 



Hab. Dry pastures, but not common. F/. July. 11. 



Leaves spreading, close to the ground, oblong, pinnatifid,- the segments 

 lobed and spinous, glabrous. From the centre of these leaves 

 arises 1 sessile, deep purple flower. Involucre obovato-cyliudrical, 

 imbricated with closely placed, appressed, lanceolate^ acute, green- 

 ish scales, not spinous. 



