compositj:. 39 
those of the disk perfect, and those of iho margin female (I/ctcro- 
gamous and discoid), or all the florets tubular and perfect {liomo- 
(jamous and discoid). Style not thickened below the point where 
it divides into two branches. Pericline usually hemispherical or 
saucer-shaped, rhyllaries not spinous-pointcd in any of the British 
species. Juice not milky. Plant often aromatic. 
Tribe I.— ANTHEMIBEiE. 
Loaves alternate. Anthodes generally heterogamous and ra- 
diant. Plorets of the disk tubular, perfect ; those of the ray 
generally female, more rarely neuter, ligulatc or more rarely 
tubular. Anthers without basal appendages. Branches of the 
style in the fertile florets linear, convex externally, flat inter- 
nally, hairy or tufted at the apex. Achenes various ; pappus 
none or membranous and crown-like. 
GEXTJS IX.— HRYSANTHEMUM. Linn. 
Anthodes heterogamous and radiant, rarely discoid, many- 
flowered. Clinanth hemispherical, more rarely nearly flat or 
conical, without palese. Pericline hemispherical or saucer- 
shaped, of numerous phyllaries which are generally imbricated, 
herbaceous with scarious margins. Plorets of the disk tubular, 
perfect ; those of the ray generally ligulate and female. Achenes 
cylindrical or prismatic or trigonous, ribbed, crowned by a large 
epigynous disk, with or without a membranous crown representing 
the pappus. 
Herbs with alternate toothed or finely- divided leaves ; anthodes 
generally rather large, with the florets of the disk yellow, those 
of the ray white, yellow, or rose-colour. 
The name of this genus of plants comes from the -words \pvGoq (chrv.sos), golden, 
and avdov (authos), flower, descriptive of it?, large yellow blossoms. 
Sub-Ge>:us I.— EU-CimYSANTIIEMUM. 
Clinanth flattish or slightly convex in fruit. Plorets of the 
ray yellow, ligulate, 4- or 5-toothed at the apex. Achenes of two 
forms, those of the female flowers of the ray trigonous or tri- 
quetrous, compressed, sometimes with the lateral angles winged, 
