( 230 .) 
ASTER* *. 
Linnean Class and Order. Syngene'sia f, Polyga'mia, Su- 
pe'kflua +. 
Natural Order. Compo'sitte §; tribe, Corymbi'fera£||,«7(«s5. — 
Lindl. Syn. pp. 140 & 142.; Introd. to Nat Syst of Bot. pp. 197 
& 199 . — Composite ; subord. Asterea; ; Loud. Hort. Brit. pp. 
520 & 521 . — Synantherete ; tribe, Corymui'feras ; 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. Asterosaj ; sect Asterinas; 
subsect. Asterianaj; type, Asteraceaj ; Burn.Outl. of Bot. pp. 
900, 901, 920, 924, & 926 . — Composite. Linn. 
Ge.\ Char. Involucrum ( common calyx J (fig. 1.) imbricated ; 
scales strap-shaped, acute ; the lowermost spreading (except in 
Ulster Tripolium). Corolla compound, radiant ; Jlorels of the disk 
(fig. 2.) numerous, perfect, tubular, with 5 equal spreading seg- 
ments ; those of the ray (fig. 3.) with a pistil only, in a single row, 
oblong, 3-toothed, not yellow. Filaments (see ffg. 4.) 5, in the 
tubular florets only, hair-like, short. .Luthers (see fig. 4.) in a cy- 
lindrical tube. Germen in all the florets fertile, oblong. Style 
thread-shaped. Stigmas 2, oblong, spreading ; those of the disk 
rather larger and thicker. Seed-vessel none, but the scarcely alter- 
ed, spreading calyx. Seed inversely egg-shaped. Down ( pappus J 
(fig. 5.) sessile, hair-like, simple. Receptacle (see fig. 7.) naked, 
almost flat. 
Distinguished from other genera, in the same class and order, by 
the imbricated, strap-shaped, pointed scales of the involucrum ; the 
oblong, not yellow, fiorcts of the ray ; the sessile, simple pappus ; 
and the naked receptacle. 
One species British. 
ASTER TRIPO'LIUM^f. Tripoly St&r-wort. Sea Star-wort. 
Blue Daisies. Blue Chamomile. 
Spec. Char. Herbaceous. Stem smooth, corymbose. Leaves 
strap-spear-shaped, fleshy, entire, smooth, obscurely 3-nerved. 
Scales of the involucrum . spear-shaped, membranous, blunt, all 
upright and imbricated. 
Kngl. Hot. t. 87.— Flora Danica, t. 615. (fide Smith). — Hook. FI. Lond. t. 
196. — Linn. Sp. I’l. p. 1226. — W illd. Sp. PI. v. iii. pt. in p. 2059. — Muds. FI. 
Angt. (2nd ed.) p. 868. — Aiton’s Hort. Kew. 1st ed. v. iii. p. 199 ; 2nd cd. vol. v. 
p.58.— Sm. H. ISrit. v. ii. p.888.; Engl. 'FI. v. iii. p. 436.— With. (7th edit.) 
v. iii. p. 940.— Lindl. Syn. p. 143.— Hook, llrit. FI. p. 362. — Light!'. FI. Scot, 
v.i. p. 482. — Itelh. FI. Cant. (3rd ed.) p.344.— Hook. FI. Sent. p. 244.— Grcv. 
FI. Kdin. p. 179. — FI. Devon, pp. 139 Sc 160. — Jolinst. FI. of Herw. v. i. p. 185. — 
Fig. 1. Involucrum. — Fig. 2. A Floret of the Disk. — Fig. 3. A Floret of the 
ltay. — Fig. 4. Stamens, Germen, Style, and Stigmas of a floret of the disk. — 
Fig. 5. Seed and Pappus.— Fig. 6 Part of one of the Itavs of the Pappus. — 
F'ig. 7. Involucrum, and Receptacle.— Figs. 4 & 6 magnified. 
* Fiom aster, a star ; which the flowers resemble. 
t See Tussilayo farfara. f. 91. n. f. t See Achillea ptarmica, f. 36. n. J. 
$ See. Prenanlhes murutis. f. 27, a. || See Achillea ptarmica, f. 36, a. 
If Called Tripolium, because, according to Diosoonioi s, the flower changes 
its colour thrice in one day ; but no such phenomenon is observable in our 
climate. Wnninivc, 
