( 166 ) 
ERIGERON* *. 
Linnean Class and Order. Syngene'sia f, Polyga'mia, Su- 
pk'rflua +, 
Natural Order. Composite § ; tribe, CorymbTfer.e||, Juss. — 
Lindl. Syn. pp. 140 & 142.; Introd. to Nat. Syst. of But. pp. 197 
& 199. — Composite; subord. Astere/e ; Loud. Hort. Brit. pp. 
520 & 521. — Synanthe're.e ; tribe, Corymbi'fer.e ; Rich, by 
Macgilliv. pp. 454 & 455. — Corymbi'fer e, sect. 2. Juss. Gen. PI. 
pp 177 & 180. — Sm. Gram, of Bot. pp. 121 & 123. Engl. FI. 
v.iii. p.334. — Syringales; subord. Astf.ros.e; sect. Asterina?; 
subsect. Asterian.e ; type, Asteracete ; Burn. Outl. of Bot. pp. 
900. 901, 920, 924, & 926. — Com posit jE, Linn . 
Gen. Char. Involucrum {common Calyx J (fig. 1.) oblong, im- 
bricated ; scales strap-shaped, pointed, upright, very numerous ; 
tin* innermost longest, all nearly equal. Corolla compound, radiant ; 
florets of the disk (see fig. 2.) numerous, perfect, funnel-shaped, re- 
gular, their limb in 5, sometimes said to be but 4, equal segments ; 
florets of the ray (see fig. 3.) numerous, in a double row, tubular 
at the base, the limb very narrow, strap-shaped, tapering, nearly 
upright, either entire, or slightly toothed. Filaments (see fig. 4.) 5, 
in the florets of the disk only, hair-like, very short. Anthers (sec 
figs. 2 & 4.) in a cylindrical tube, simple. Germen (see figs. 2, 3, 
and 4.) inversely egg-shaped, angular. Style (see figs. 3 & 4.) 
thread-shaped. Stigmas (see figs. 2, 3, & 4,) 2, oblong, a little 
prominent, slightly spreading. Seed-vessel none but the converging 
calyx. Seed (see figs. 5 & 6.) small, inversely egg-shaped. Pap- 
pus (see figs. 5 & 6.) sessile, simple, rough, as long as the florets. 
Receptacle (see fig. 5.) flat, naked, slightly cellular. 
Distinguished from other genera in the same class and order by 
the imbricated involucrum of numerous strap-shaped, pointed scales ; 
the naked receptacle ; the numerous, strap-shaped, very narrow 
florets of the ray, in a double row ; and the sessile, simple pappus. 
Three species British. 
ERl'GERON A'CRIS. Blue Flea-bane. 
Spec. Char. Stem racemose. Peduncles mostly single-flowered. 
Pappus as long as the florets of the ray. Leaves spear-shaped, blunt. 
Sm. Eng. FI. v. iii. p. 422. — Hook, Brit. FI. p. 358. — Johnston’s FI. of Berw. 
v. i. p. 183. — Walk. FI. of Oxf. p.238.— Bab. FI. Bath. p. 25. — Erigeron acre , 
Finn. Sp PI. p. 1211. — Engl. Bot. t. 1158. — Curt. FI. Loud. t. . — Iluds. FI. 
Angl. (2nd ed.) p. 363.— Sm. FI. Brit. v. ii. p. 877. — With. (7lh cd.) v. iii. p. 
932. — Lindl. Syn. p. 144. — Lightf. FI. Scot. v. i. p. 474. — Sibth. FI. Oxon. p. 
252. — Abbot’s FI. Bedf. p. 181. — Davies’ Welsh Botanologv, p. 70. — Purt. Mid. 
FI. v. ii. p. 396 ; and v. iii. p. 376. — Relli. FI. Cantab. (3rd ed ) p. 340. — Hook. 
FI. Scot. p. 242. — Curt. Brit. Entomol. v. ix. t. 417. — Perry’s PI. Varvic. Select®, 
Fig. 1. Involucrum or common Calyx. — Fig. 2. A Floret of the Disk.— 
Fig. 3. A Floret of the Hay. — Fig. 4. The Stamens, Germen, Style, and Stig- 
mas. — Fig. 5. Receptacle, and a Seed. — Fig. 6. A Seed. — Fig. 7. Root Leaves. 
— Figs. 2, 3, 4, & 6, magnified. — In the magnified figures the Pappus is repre- 
sented too short. 
* From cri, Gr. early ; and geron, Gr. an old man ; from the bald heads of 
the receptacle, after the Howers and fruit have fallen. Dr. Hookf.r. 
t See Tussilago Farfara ,f. 91 , n. f. t See Achillea Ptarmica, f . 36 , n . ; . 
$ See Prenanthes muralis, f. 27, a. || See Achillea Ptarmica, I. 36, a. 
