416 
47. C0MP0SITACE2E. 
rigid scarcely bifid, of male simple broadly orbicular and 
truncate at the tip. Ach. tipped with the persistent style, 
winged or thickened at the 2 edges. — Small inconspicuous 
often prostrate herbs. Heads mostly sessile. 
ttTribe VIII. BELLIDEJE. 
Heads heterogamous radiate ; fl. of margin female conspicu- 
ously ligulate , of dish perfect tubular regular. Branches of style 
linear compressed not tufted below the tip. Ach. obcompressed 
marginate not ribbed. Pappus 0. Fl. radiant. 
tflO. Bellis. Invol. hemispherical, scales in 2 rows, leafy, 
equal. Fl. of margin in a single row, of disk in many rows, 
4-5-toothed. Ach. obovate. Itecept. conical naked. — 
Herbs. L. simple chiefly radical. Fl. solitary on radical 
scape-like or axillary ped., disk y., ray w. or rose. 
Tribe IX. CIIR YSANTIIEMEsE. 
Heads heterogamous radiate ; fl. of margin female conspicu- 
ously ligulate; of disk perfect tubular regular. Branches of 
style (in perfect fl.) linear with a pencil or tuft of hairs below 
the truncate or produced conoidal tip. Itecept. naked. Ach. 
often dimorphous cylindric or triangular ribbed. Pappus a 
membranous crown or 0. — Fl. radiant. 
fll. Pyrethrum. Inv. saucer-shaped cup-shaped or he- 
mispherical, scales imbricate more or less scarious, the 
inner mostly obovate obtuse or spathulate. Fl. of ray 
fertile with a perfect forked exserted style, ligulate in a 
single row ; of disk with the tube obcompressedly winged, 5- 
toothed. Ach. of one sort, short uniform obconical or turbinate 
truncate at top ribbed all round and all with a narroiv crown 
or border ; epigynous disk as broad as the ach. Pappus a 
membranous short crown. Itecept. naked nearly flat or 
plano-convex. — Herb. per. or suflrutescent. L. of st. al- 
ternate. Ray w. — (In Leucantliemum Tourn., DC., all the 
ach. or at least those of the disk ( Phalacrodiscus Less.) are 
crownless. Matricaria L. has the tube of the fl. simply 
cylindric, the ach. ribless at the back and the recept. in fr. 
conical). 
tf!2. Leucanttiemum. Like Pyrethrum but all the ach. or 
those at least of the disk without croivn or pappus. 
tlfl. Myconia. lake Pyrethrum but scales of inv. subequal, 
fl. of ray sterile with the style abortive undivided not ex- 
serted, and ach. of 2 sorts ; of ray barren or abortive slender 
n/lindrically subtriquetrous neither winged nor ribbed ; of 
disk (fertile) cylindric equably 10-ribbed all round; all in- 
