162 
46. COMPOSITE. 
tubular, style almost simple, pappus clavate. Fern, florets 
fllifbrm, pappus capillary. Receptacle convex. Involucre 
hemispherical, imbricated, scales coloured at the end. 
** Pappus 0, membranous, or of 2 — 3 bristles. 
t Receptacle without scales. Heads heterogamous, radiant. 
FI. of the ray fern., ligulate, in 1 row ; of the disk herm., 
tubular. 
(16.) 6. Bellis. Involucre of 2 rows of equal obtuse scales. 
Receptacle conical. Fr. compressed. Pappus 0. 
(17-) 15. Chrysanthemum. Involucre hemispherical. Re- 
cejjtacle plane or convex. Fr. terete, without wings, or 
slightly angular and somewhat winged. Pappus 0 or of 3 
minute teeth. 
(18.) 16. Pyrethrum. Involucre hemispherical. Receptacle 
plane or convex. Fr. angular, not winged. Pappus an ele- 
vated membranous border. 
(19.) 17- Matricaria. Involucre nearly flat. Receptacle 
elongate-conical. Fr. angular, not winged. Pappus 0, or 
a slight membranous border. 
tt Recejitacle scaly. Pappus 0. 
(20.) 12. Anthemis. Heads heterogamous, raihant. Florets 
of the ray fern., or neuter, ligulate, in 1 row ; of the disk 
herm., tubular. Receptacle convex or conical. Involucre 
imbricated, of few row's. Fr. terete, or obtusely tetragonal, 
without pappus, but with a more or less prominent margin. 
[Anacyclus. Fr. compressed, winged at the edges. Other- 
wise like Anthemis.~\ 
(21.) 13. Achillea. Heads heterogamous, radiant. Florets 
of the ray fem., ligulate, short ; of the (hsk herm., tubular : 
tube 2 >lano-compressed 2-winged. Recejitacle narrow, slightly 
elevated. Involucre ovate or oblong, imbricated. Fr. com- 
pressed, without jiajipus. 
(22.) 14. Diotis. Heads homogamous, discoidal. Florets 
herm., tubular : tube compressed with 2 auricles at the base. 
Receptacle convex, with concave downy-tojiped scales. In- 
volucre bellshaped, imbricated. Fr. comjiressed, crowned 
with the persistent auricled tube of the cor., pappus 0. 
ttt Recejitaele w’ithout scales. Heads discoidal. 
(23.) 18. Artemisia. Florets of the disk herm., of the ray 
