PYRETHRUM. 
455 
rose, equal in length to breadth of disk. Scales of inv. dark 
bottle-gr. herbaceous subpubescent oblong half the length 
of ray. Fits, altogether smooth or without any beard at base. 
Ach. small elliptic flattened dorsallv, subpuberulous, entirely 
without pappus or crest, brown with a distinct pale raised 
border like a pumpkin seed, and at least the outer with a strong 
raised dorsal midrib. 
The pi. produce occasionally leafy prostrate aerial shoots 
sometimes rooting at the ends. But I have never met with 
either the true B. sylvestris Cyrill., B. annua L., or B. azorica 
Hochst. in Mad. 
The double-fld. garden varr. with all the fits, ligulate (BM. 
t. 228) are very rarely seen in Mad. 
Tribe IX. Chrysanthemea Less., DC. 
fll. Pyrethrum Hall. 
fl. P. Parthenium (L.). Artemisia. Feverfew. 
Bushy and leafy, more or less pubescent ; st. numerous 
straight erect stiff striated; 1. all stalked subpubescent punc- 
tate flat pinnatisect, segm. pinnatifid and toothed, the upper 
confluent ; cyme terminal lax leafy ; inv. hemispherical, be- 
coming finally umbilicate, scales with a prominent strong mid- 
rib ; ligules short broad oblong-obovate or oval. — Sm. E. Fl. 
iii. 451 ; DC. vi. 58 ; Willk. et Lange ii. 100. Matricaria Par- 
thenium Linn. Sp. 1255 ; Fl. Dan. t. 674 ; EB. t. 1231 ; Brot. i. 
375; Buch 195.no. 266; Bab. 177. Chrysanthemum Parthe- 
nium Pers. ii. 462 ; Koch 418. Leucanthemum Parthenium 
( Iren. et Godr. ii. 145. Tanacetum ( Pyrethrum ) Parthenium 
BFG. xvi. t. 101. f. ii. — Herb.-suffr. per. Mad. reg. 1, 2, r. 
Along the Levada in Bib. Frio ; between Fajaa d’Ovellia and 
P ia do Pargo ; at Seixal, S. Vicente, P t0 da Cruz, &c., mostly 
near cottages and nowhere beyond the range of cultivated 
ground. April-Oct. — St. numerous from the suffrutescent sim- 
ple not creeping root-stock, 1-2 ft. high, forming a thick leafy 
mostly fuli-gr. but sometimes hoary or greyish gr. bush, simple 
hard and woody downwards, branched chiefly upwards. L. 
punctate on both sides but more distinctly beneath, varying 
from nearly or quite smooth and full bright gr. to subtomen- 
tose-pubescent and hoary, 1^-2 in. long, lp-l| broad at base, 
triangular-ovate or ovate-oblong ; pinnae leafy ovate or oblong 
inciso-pinnatifid, ultimate segm. finely or sharply toothed. 
Cyme stiffly and subreinotely branched, branches erect or erecto- 
patent ; fl. moderately large ^ in. in diam. distinct or subre- 
mote, each on its somewhat elongated proper ped. which is 
