162 
COMPOSITiE. 
lanceolate obtuse with a narrow membranous margin, florets of the 
ray white, fr. without a border. — E. B. 601. St. 2. 11. — St. erect, 
1—2 feet high, simple, striated. Lower 1. narrownng into a 
winged and auricled stalk. Heads solitary, terminal, large, disk 
yellow.— Fields. P. VI.— VIII. Ox-eye. 
2. C. segetum (L.) ; 1. glabrous toothed dilated outwards and 
lobed, upper 1. clasping, involucral scales ovate obtuse with a broad 
membranous margin, florets of the ray yellotv. — E. B. 540. — St. a 
foot high, alternately branched, angular. L. mciso-serrate or 
lobed in the upper part, simply toothed below. Heads solitary, 
terminal, florets all yellow — Corn-fields. A. VI. — VIII. Corn 
Marigold. 
16. (IS.) PV'RETHRUM Sill. 
1. P. Parthenium (Sm.) ; I. stalked pinnate, segments ovate or 
oblong pinnatifid : lobes cut, st. branched, heads corymbose, invo- 
lucral scales linear obtuse, fr. crowned with a short jagged mem- 
brane. — E. B. 1231. — St. erect, 2 feet high, branched, furrowed, 
panicled. Heads in small corymbs terminating the stem and 
branches, disk vellow, ray white. — Waste places, not very com- 
mon. P. VII. VIII. Feverfew. 
2. P. inodorum (Sm.) ; I. sessile pinnatifid in numerous capil- 
lary pointed segments, st. branched, heads solitary, involucral 
scales lanceolate obtuse, fr. rugose and with 2 round glandular 
dots on the external face just below the elevated entire border. — 
E. B. 676. Matricaria DC. — St. erect, 12 — 18 in. high, smooth, 
angular. L. in very narrow elongated segments " furrowed be- 
neath." Heads solitary, terminating the branches, ray white, 
disk yellow. Fr. with 3 prominent smooth ribs, the intermediate 
spaces rugose, 2 of them narrow and internal, 1 broad and ex- 
ternal. — Fields and waste places. A. VII. VIII. 
3. P. maritimtim (Sm. ) ; 1. sessile doubly pinnate, segments 
fleshy linear entire bluntish " convex above keeled beneath," st. 
branched diffuse, heads solitary, involucral scales lanceolate ob- 
tuse, fr. slightly rugose and with 2 elongated glandular spots on 
the external face just below the lobed elevated border. — E. B. 
979- — St. mostly procumbent, reddish. L. with short crowded 
segments. Heads as in P. inodorum. Fr. with 3 prominent 
smooth ribs with a narrow intermediate rugose space externally 
but the 2 internal spaces reduced to simple lines separating the 
ribs. If these characters are permanent, this is a distinct species. 
—Sea-shores. P. VII. VIII. 
17. (19.) Matricaria Linn. . 
1. M. Chamomilla (L.) ; 1. bipinnate smooth, segments capillary 
simple or divided, heads solitary, receptacle hollow, involucral 
