﻿( 91 .) 



TUSSILA'GO * *. 



Linnean Class and Order. Sy NGENE^ siA’f , Polyga / mia, Su- 

 pe'rflua X • 



Natural Order. Compo'sitjE§ ; Tribe, Corymbi'fera5||. Juss. 

 — Lind. Syn. pp. 140 & 142 ; Introd. to Nat. Syst. pp. 197 & 199. — 

 Compo'siTjE ; suborder, Jacobe'^e. Loud. Hort. Brit. pp. 520 & 

 521. — Synanthe're*: ; tribe, Corymbi'fer^e. Rich, by Macg. 

 pp. 454, 455.— Corymbi'fer^:, sect. 2. Juss. Gen. PI. pp. 177 

 & 180. — Sm. Gram. ofBot. pp. 121 & 123 ; Eng. FI. v. iii. p. 334. 



Gen. Char. Involucrum ( common calyx ) (fig. 1.) cylindrical, 

 formed of a simple row of strap-shaped, upright, close, parallel, 

 equal scales. Corolla compound, of two kinds of florets ; those 

 of the disk (fig. 2.) few, perfect (having both stamens and a pistil), 

 tubular, in 5, nearly equal segments ; those of the ray numerous, 

 long, strap-shaped, without stamens. Filaments (fig. 3) 5, in the 

 florets of the disk only, awl-shaped, very short. Anthers (see fig. 3) 

 united into a cylindrical tube. Germen inversely egg-shaped, short, 

 often imperfect. Style (see fig. 3) thread-shaped. Stigmas (see 

 figs. 2, 3, & 4) 2, prominent, strap-shaped when perfect, thick and 

 short when abortive. Seed-vessel none, except the hardly altered, 

 finally reflexed, calyx (fig. 6). Seed (fig. 5) oblong, compressed. 

 Down ( pappus ) (fig. 5) simple, sessile (not stalked). Receptacle 

 (fig. 6) naked. Scape single flowered. 



Distinguished from other genera, with strap-shaped marginal 

 florets, in the same class and order, by the naked receptacle ; the 

 calyx of a simple row of equal, strap-shaped scales; the simple 

 pappus ; and the inversely egg-shaped, compressed seed. And 

 from the genus Petasi'tes, by the strap-shaped marginal florets ; 

 and the single-flowered scape (flower-stalk). 



One species British. 



TUSSILA'GO FA'RFARA. Common Colt’s-foot. 



Spec. Char. Leaves heart-shaped, angular, toothed, cottony 

 beneath. Scape woolly, clothed with scaly bracteas. 



Engl. Bot. t. 429.— Curt. FI. Loud. t. . — Linn. Sp. PI p. 1214. — Huds. 



FI. Angl. (3rd ed.) p.364. — Sm. FI. Brit. v. ii. p.878. Eng. FI. v. iii.p. 425. — 

 With. (7th. ed.) v. iii. p. 933. — Woodv. Med. Bot. v. i. p. 37. 1. 13. — Lindl. Syn. 



Fig. 1. Calyx. — Fig. 2. A tubular floret of the disk. — Fig. 3. The 5 Fila- 

 ments, with the Anthers united into a tube round the pistil. — Fig. 4. A strap- 

 shaped floret of the ray. — Fig. 5. A Seed, crowned with the sessile, simple pap- 

 pus.— Fig. 6. The Receptacle, and reflexed Calyx. — Figs. 2, 3, & 4, a little 

 magnified. 



* Altered from Tussis, a cough, in the cure of which the plant has been 

 employed. 



t The 19th class in the Artificial System of Linn.eus ; the plants of which 

 it is composed have all of them compound .flowers, with their stamens united 

 by their anthers into a cylindrical tube. Here, as Sir ,T. E. Smith observes in 

 his Introduction to Botany, “ The Linnean method of arrangement performs 

 more than it promises,” for this class forms one of the most natural and exten- 

 sive families in the vegetable kingdom. It comprehends the Compo'sita: of 

 Linnceus ; the Cinaroce'fhal/e, Cichoha'cejf., and Corymbi/f£r,e, of Jus- 

 sieu ; and the Synanthe'reje, of Richard. 



t See. Achillea Ptarmina, fol. 36, note f. $ See Prenanlhes muralis, fol. 27, a. 



|| See Achillea Ptarmica, fol. 36, a. 



