SYNGEN. POLYGAM. ^EGlUAL. 22/ 



3. S. olerateus (common Sow-thistle], peduncles subtomentose 

 umbellate, involucre glabrous, leaves runcinate dentato-ciliate 

 amplexicaul at the base. Lightf.p.428. E. B. t. 843. 



HAB. Waste places and cultivated ground, common. Fl. June, Aug. 



Q. 



Two to three feet high. Flowers rather small, yellow, occasionally 

 white, according to Mr. Hopkirk. 



4. LACTUCA. 



1. L. virosa (strong-scented Lettuce), leaves oblong toothed ho- 

 rizontal their keel prickly their apex obtuse. Lightf.p. 429. 

 E.B. t. 1957. 



HAB. Banks and way-sides, but rare. Foot of Arthur's Seat, Edinb., 

 Light/. Dunkeld, Mr. Murray. Fl. Aug. $ . 



Stem 3 4 feet high, erect, prickly, with distant leaves, panicled at 

 the summit. Leaves finely toothed, embracing the stem j radical 

 ones numerous, obovate. Abounding with a milky and narcotic 

 juice, which has been considered by some as a gentle and safe opiate. 

 Flowers small, yellow. 



5. PRENANTHES. 



1. Pr. muralis (Ivy-leaved Lettuce), florets 5, leaves lyrato-pin- 



natind and toothed, the terminal lobe with about 5 angles. 



Lightf.p. 431. E. B.t. 457. 

 HAB. On shady rocks and walls of old castles in the Lowlands, Lightf. 



FL July. I/. . 

 Stem two feet high, panicled at the top, with the branches spreading. 



Flowers small, yellow. 



6. LEONTODON. 



1. L. Taraxacum (Dandelion), outer scales of the involucre FC- 

 flexed, leaves runcinate glabrous toothed. Lightf. p. 432. 

 E.J3./.510; 



HAB. Meadows and pastures, abundant. Fl. in the summer. Jf. . 

 Leaves all radical, their segments more or less deep. Scape with a 

 large single flower. 



2. L. pahtstre (Marsh Dandelion), outer scales of the involucre 

 erect appressed, leaves sinuato-dentate nearly glabrous. E. B. 

 /.553. 



HAB. Pentland hills, Mr. Maughan. Rosslyn woods, also bogs near 



Edinb., Mr. Greville. Marshes, Angus-shire, Mr. G. Don. Wet 



^ moors about Glasg., not uncommon, Hopkirk. Fl. June, July. I/ 



Very nearly allied to the preceding, and was for a long time, perhaps 



justly, considered as merely a var. of it. 



7. APARGIA. 



1. A. hisptda (rough Apargid), scape single-flowered, leaves den- 

 tate scabrous, " florets hairy at their orifice glandular at the 



Q 2 



