Matricaria.'] xlvi. composite: coeymbiferte. 257 
43. Chrysanthemum Linn. Ox-eye. 
Achenes of the disk somewhat terete : epigynous disk large. 
Pappus 0. Receptacle naked. Involucre hemispherical or nearly 
flat ; the scales imbricated, membranaceous at their margins. — 
Name: xP vao ^i g°ld, and av&tp ov, a flower ; from the colour of 
the blossoms in some of the species. 
* Achenes of the disk and ray similar. Leucanthemum. 
1. C. Leucanthemum L. ( great white 0 .) ; leaves oblong obtuse 
cut and pinnatifid at the base, radical ones obovate petiolate, 
stem erect branched (ray white). E. B. t. 601. 
Dry pastures, abundant. 2/.. 6 — 8. — Stems 1 — 2 feet high, fur- 
rowed. Heads of flowers large, their disk yellow, the ray white. 
** Achenes of the ray angled and somewhat winged. 
2. C. segetum L. ( Corn Marigold , or yellow O .) ; leaves am- 
plexicaul glaucous inciso-serrate above toothed at the base, 
(ray yellow). E. B. t. 540. 
Corn-fields, frequent; rare about Edinburgh. ©. 6 — 9. — One 
foot or more high. Flowers large, deep yellow. 
44. Matricaria Linn. Wild- Chamomile. Feverfew. 
Achenes all angular, crowned with a large epigynous disk. 
Pappus a membranaceous border, or wanting. Receptacle naked. 
Involucre conical, hemispherical or nearly flat, the scales imbri- 
cated, usually membranaceous at their margins. — Named from 
its reputed medicinal virtues. 
1. M. Parthenium L. ( common F.) ; leaves petiolate flat 
bipinnate the segments ovate cut, peduncles branched corym- 
bose, stem erect, involucre hemispherical downy, receptacle 
convex, pappus short toothed. Pyrethrum Sm. : E.B. t. 1231. 
Waste places and in hedges. If. 7 — 9. — Stem 1 — 2 ft. high, 
branched. Disk yellow ; ray very short, white. Plant bitter and tonic. 
2. M. inodura L. ( Corn F., or scentless Mayweed) ; leaves 
sessile bipinnatifid the segments capillary, stem branched spread- 
ing, receptacle convex, scales of involucre lanceolate obtuse, 
achenes with two glandular depressions on the external face 
below the elevated border, pappus entire or 4-lobed. — a. 
vulgaris ; border of fruit entire glandular, depressions round. 
Pyrethrum Sm. : E. B. t. 676. — /3. maritima; leaves more 
fleshy, border of fruit lobed glandular depressions elongated. 
M. maritima L. Pyrethrum Sm. : E. B. t. 979. 
Fields and way-sides, common. — 0. sea-coast in many places, 
especially in Scotland. ©. 6 — 10. — Stem about 1 foot high. 
