138 LEAFLETS OF PHILIPPINE BOTANY (Vor. I, Art. 7 
48. ARTEMISIA. 
Achenes strongly 5-ribbed; pistillate flowers in 
two series. 
49. CROSSOSTEPHIUM. 
45. CHRYSANTHEMUM LINN. 
Mostly annual or perennial herbs, rarely shrubs, with 
alternate leaves, either entire, toothed, lobed, or pinnatifid. 
Heads heterogamous, large, terminal, long peduncled, or 
smaller and corymbose; ray flowers pistillate and fertile, its 
spreading ligule white, yellow or rosy; disk flowers perfect, 
also fertile, its tube terete or 2-winged and 4 to 5-toothed; 
involucre broad, bracts in many series, quite broad, appress- 
ed; receptacle naked; anther bases obtusely entire; style arms 
of disk flowers with truncate penicillate tips; achenes sub- 
terete or angled; pappus none or short and cup shaped. 
Species about 140; chiefly in north temperate regions. 
C. indicum Linn. Sp. Pl. 889, 1753. Benth. Fl. Hongk. 
184, 1801. F. Vil. Nov. App. 119, 1880. Forbes and Hemal. 
in Journ. Linn. Soc. Bot. 23; 437, 1888. Pyrethrum indicum 
Cass. in DC. Prod. 6; 62, 1837. Mig. Fl. Ind. Bat. 2; 86, 1856. 
Matricaria chamomilla Blco. Fl. Filip. ed. 1; 631, 1837. Naves 
in Fl. Filip. ed. 3; t. 329, 1880.—0One meter high, suffrutes- 
cent and much branched. The young branches and the under 
surface of the leaves cottony pubescent. Leaves petioled, 
ovate, toothed or lobed or the larger basal ones pinnatifid, 
either acute or with mucronate teeth. Heads few, long ped- 
uncled, in short terminal racemes; involucre 1 cm. in diameter 
or more; the outer bracts herbaceous and pubescent, the 
inner ones completely scarious; rays showy, yellow. 
DISTRIBUTION: 
Native of China and Japan, and is extensively grown 
in green houses in most other countries. Both Blanco 
and Villar record it from the Philippines. 
46. CENTIPEDA LOUR. 
Herbs, with alternate usually toothed leaves. Heads 
small, heterogamous, lateral, or in short terminal racemes: 
