242 SYfcGEN. POLYGAM. SUPERF. 



to- lanceolate serrated the upper ones entire, stem herbaceous 

 corymbose, scales of the involucre recurved leafy. Lig/itf. 

 p. 473. E.'B.t. 1195. 



HAS. Dry gravelly soils, but rare. Near Blair, in Athol? Dr. Par- 

 sons v. Lightf. Fl. Sept. Oct. $ . 



Stem 2 3 feet high. Panicle leafy, with the leaves entire. Lower 

 leaves petiolate. Flowers yellow. Florets of the ray very small, 

 ligulate. 



** Radiati. 

 25. ERIGERON. 



I.E. acre (blue Flea-lane), peduncles alternate (scarcely race- 

 mose) single flowered, pappus as long as the florets of the ray, 

 leaves lanceolate obtuse. Lightf. p. 474. E. B. t. \ 158. 



HAB. Dry mountainous pastures, frequent. Fl. Aug. 7/. 



One foot to two feet high; whole plant scabrous, hispid, erect, pani- 

 cled above, and leafy ; Jtowers pedunculate from the axils of their 

 leaves, and terminal. Leaves below tapering into a footstalk. Scales 

 of the involucre linear-lanceolate, hispid. Florets of the disk yel- 

 low : of the ray ligulate, purplish. Pappus very long and awny. 



2. E. alpinum (alpine Flea-lane}, stems with usually only one 

 flower, pappus much shorter than the florets of the ray, leaves 

 lanceolate. E. B. t. 464, and t. 2416 (E. uniflorum). 



HAP,. Rocks on Ben Lawers, Mr. Dickson. Banks of the Almond, 

 above the bridge, G. Don. Fl. July. }/ . 



Hair)' or hispid like the last ; but with much longer leaves in propor- 

 tion 5 3 5 inches high, simple, with rarely more than one Jlower 

 at the summit, which is yellow in the centre usually, and purple in 

 the ray. Smith gives to the E. uniflorum the character of " florets 

 of the'ray erect;" so they are frequently in E. alpinum; and as I 

 can see no other mark either in Smith's figure or in the specimens 

 that I have received from the dicoverer Mr. G. Don, I feel little he- 

 sitation in uniting the two. 



26. TUSSILAGO. 



* Flowers rayed. Scape single-lowered. 



1. T. Farfara (Colt's-fool), scape single-flowered imbricated 

 with scales, leaves cordate angular toothed downy beneath. 

 Lightf. p. 475. E. B. t.429. 



HAB. Moist and clayey soils, frequent, and very injurious to ploughed 

 lands. Fl. March, April. I/ . 



Root thick, excessively creeping. Leaves radical, appearing after the 

 bright yellow flowers, white and downy beneath. Scapes very 

 downy. This down of the stems and leaves makes good tinder. 

 The leaves themselves have been used medicinally as an infusion, 

 or smoked like tobacco to relieve pulmonary disorders. 

 *"* Flowers all tubular. Scapes many -flowered. 



2. T. Petasites (common Butter-lur), thyrsus ovato-obJong, 

 leaves cordate unequally toothed with the lobes approximate 



