CLASS XVII. ORDER II. 
337 
Car "duus. Calyx ovate, imbricate with prickly scales : receptacle 
villose ; egret pilose. 49. 54 — (comb-tooth thistle.) 
Exotic. 
Car'thamus. Calyx ovate, imbricate with scales, ovatish-leafy at 
the apex ; egret chaff-hairy or none ; receptacle chaff-bristly. 49. 54. 
(false saffron.) 
Cyn' ara. Receptacle bristly ; calyx dilated, imbricate, scales with 
fleshy bases, emarginate and pointed ; egret plumose, sessile. 49. 54 — 
(garden artichoke.) 
C. Florets tubulous ; flower discoid. 
Eupato'rium. Calyx imbricated (rarely simple) oblong': style long, clo- 
ven half way down : egret pilose, scabrous, or rough papillose : receptacle 
naked : seed smooth and glandular, 5-striate. 49. 55 — (boneset, thorough- 
wort, joe-pyc.) S. 
Mikania. Calyx 4 — 6-leavcd, 4 — 6-flowered : receptacle naked: egret 
pilose. 49. 55 — S. 
Order 2. Polygamia superflua. 
A. Flowers discoid ; the ray-florets being obsolete. 
Tanace'tum. Calyx imbricate, hemispheric : scales acuminate : rays ob- 
solete, 3-clcfl : egret somewhat marginal : receptacle naked, blowers co- 
rymbed.) 49. 55 — (tansey.) 
Artemi'sia. Calyx imbricate, ovate, with scales rounded, converging: 
ray-florets subulate : egret 0: receptacle somewhat villose, or nakedish. 
(Flowers mostly rounded.) 49. 55-(wormwood, southern-wood.) S. 
Gnapha lium. Calyx imbricate, with the marginal scales rounded, scari- 
ous, shortish, glossy, coloured : receptacle naked : egret pilose or plumose, 
scabrous; florets of the ray subulate, of the disk entire. Sometimes all the 
florets are perfect. 49. 55 — (life everlasting.) S. 
B. Flowers radiate : the ligulate ray florets very manifest. 
(Receptacle naked.) 
Erigeron. Calyx imbricate, sub-hemispherical : florets of the ray very 
numerous and narrow : receptacle naked : egret double ; outer minute ; inner 
hairy, of few rays. 49. 55 — S. 
In "cla. Calyx imbricate, generally squarrose : egret simple, scabrous, 
sometimes a minute, exterior, chaffy one : anthers ending in 2 bristles at the 
base : ray-florets numerous. Ray-florets always yellow. 49. 55 — (elecam- 
pane.) 
Aster. Calyx imbricate, the inferior scales generally spreading ; egret 
simple, pilose : receptacle often deep-pitted. Florets of the ray more than 10, 
except in solidaginoides, and a few other species ; colour purple or white, nev- 
er yellow. 49. 55 — (star-flower.) S. 
Solida'go. Calyx oblong or sub-cylindric, with oblong, narrow, pointed 
straight scales, imbricate, closed upon the flower : ray-florets about 5, and 
fe we r than 10, lanceolate, 2-toothed, equal to, or shorter than the calyx : fila- 
ments capillary, very short : style thread-form, equalling the length of the 
stamens, stigma cleft, spreading : egret simple, pilose, scabrous : receptacle 
furrowed with dots or punctures : seeds oblong-ovate, (yellow.) 49. 55 — 
(golden rod.) S. 
T cssil ago. Calyx simple, swelling; scales equal, and equalling the disk, 
sub-membranous : pistillate florets ligulate or without teeth : egret simple, 
sessile. 49. 55 — (Sometimes polygamous.) — (coltsfoot.) 
Chrysan"themum. Calyx hemispherical, imbricate, with the scales mem- 
branous at the margin : egret none, or a narrow margin. 49. 55— (ox-eyed 
daisy, fever-few.) S. 
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