LEAFLETS OF PHILIPPINE BOTANY (Vou. I, Art. ? 
Luzon: 
Bagabag, Province of Nueva Viscaya, June 1902, Merrill 
158. 
42. COSMOS CAV. 
Annual or perennial cauleseent herbs, with opposite entire, 
lobed or dissected leaves. Heterogamous heads peduncled; 
involucre nearly hemispheric; bracts in 2 series, thin, united 
at the base; receptacle usually flat; ray flowers neutral, its 
ligule pink, purple or rarely yellowish; disk flowers perfect, 
fertile; anther bases entire or minutely 2-toothed; style arms 
of perfect flowers slender, often tufted; achenes 5-angled or 
flattened on the back, beaked; pappus of 2 to 4 barbed awns. 
Species 15 to 20; chiefly in tropical America. 
1. C. caudatus H. B. K. Nov. Gen. et Sp. 4; 240, 1820. 
DC. Prod. 5; 606, 1836. F. Vil. Nov. App. 118, 1880. Naves 
in Fl. Filip. ed. 3; t. 287, 1880. Mart. in Nuov. Giorn. Dot. 
Ital. 15; 297, 18883. Merr. Govt. Lab. Publ. 6; 25, 1904.— 
A glabrous introduced species. Leaves petioled, pinnately 
dissected, glabrous, segments acuminately lanceolate, terminat- 
ing into fine points. Heads upon erect, rather rigid peduncles 
and much exceeding the leaves; outer bracts foliaceous, slender, 
sharply pointed; inner ones shorter, glabrous, linear lanceolate, 
scabrous along the edges; ligules showy, purple, thin and 
prominently nerved, entire or semilobed; scales linear, obtuse; 
disk flowers yellow; achenes slender, straight or curved, base 
attenuate, terminating into slender antrosely scabrous beaks; 
awns 2, extrorsely scabrous, with a short paleaceous one 
between. 
DISTRIBUTION: 
Introduced from Mexico. 
PHILIPPINES: 
1894-5 Marave 178. 
LUZON: 
Dinalupihan, Province of Bataan, January to February 
1903, Merrill 1562. 
