CHRTSAXTHESIUM. DIOTIS. 
179 
2. M. inoddra (L.) ; /. sessile pinnatifid m'th many capillary 
pointed segments, st. branched, heads solitary, phyll. lanceolate 
Dliint, receptacle ovate, fr. rugose and xcith 2 rotmd glandtdar 
dots on the external face just below the elevated entire border. — 
E. B. 676. Pyrethrum Sm. — St. erect, 12 — 18 in. high, smooth, 
angular. L. in very nan'ow long mostly alternate segments. 
Heads solitary, ending the branches ; margin of phyll. cut and 
fuscous ; ray white ; disk yellow. Fr. with -3 prominent smooth 
ribs ; intermediate spaces rugose, 2 narrow and internal, 1 broad 
and external. — ^. 3/. maritima (L.) ; segments fleshy linear 
blimtish convex above, piincipal ribs keeled beneath, fr. with 
2 long glandular spots on the external face jnst below the lobed 
elevated border. E. B. 979. L. with short crowded mostly 
opposite segments. Fr. with a naiTOW intermediate rugose 
?)ace externally, the 2 internal spaces reduced to simple lines. — 
ields and waste places. ^. Sefl-shore. A. TIL YHI. E. S. I. 
■3. M. CTiatnotnil'la (L.) ; 1. bipinnate smooth, segments capil- 
lary simple or divided, heads solitary or subcoiymbose, receptacle 
hoUow conical, phyll. linear blunt. — E.B. 1232. — St. erect, 1 foot 
high, branched. Heads on long naked stalks or forming an 
irregular corymb; disk yellow; ray white. — Cultivated and 
waste ground'. A. VI. VII. Wild Chammnile. E. S. I. 
15. (16.) Chrtsan'themtjm Linn. 
1. C. Letican'themttm (L.); lower 1. obovate stalked, stem-1. 
oblong blunt cut sessile pinnatifid at the base, phyll. lanceolate 
blunt with a narrmc membranoits margin, fl. of i-ay white, fr. 
without a border.— ^. B. 601. St. 2. 11. — St. erect, 1—2 feet 
high, simple, striate. Lower 1. nari'owing into a winged and 
amicled stalk. Heads solitary, terminal, large ; disk yeUow. — 
Fields. P. M:.— VHI. Ox-eye. E. S. I. 
t2. C. seg'etvm (L.) ; 1. glabrous toothed dilated outwards and 
lobed, upper 1. clasping, phyll. ovate blunt v:ifh a broad mem- 
branous margin, fl. of ray yellow. — E. B. 540. — St. a foot high, 
alternately branched, angular. L. incise-sen-ate or lobed in the 
upper part, simplv toothed below. Heads solitary, terminal. — 
Corn-fields. A. Vl.— VHI. Corn Marigold. ' E. S. I. 
16. (22.) Dio'xis Desf. Cotton-weed. 
1. D. marit'ima (Cass.). — E. B. 141. — Densely cottony and 
white. St. about a foot long, decumbent below, densely leafy, 
corymbose above. L. sessile, oblong, blunt, flat, crenate, per- 
sistent. Heads in terminal corjTubose tufts. Inv. cottony. 
Fl. yellow. — Sandy sea-shores, rare. P. IX. E. I. 
