AvausT 16, 1906] MANUAL OF THE PHILIPPINE COMPOSITAE 119 
LUZON: 
Bauang, Province of Union, February 1904, Elmer 5627. 
Manila, January 1904, Elmer 5506. 
Bacolor, Province of Pampanga, May 1904, Parker 46. 
Manila, May 1902, Merrill 45. 
PANAY: 
January 1904, Copeland. 
BASILAN: 
April 1903, De Vore and Hoover 19. 
23. PTEROCAULON ELL. 
Tomentose herbs, with alternate decurrent leaves. Heads 
heterogamous, collected in globose terminal or scattered spicate 
clusters; numerous outer flowers fertile, filiform, 2 to 3-toothed; 
perfect central ones few, usually sterile, tubular, 5-tootned; 
involucre ovoid, its bracts narrow; receptacle small, glabrous 
or with deciduous hairs; bases of anthers sagittate, its auricles 
tailed and often connate; style arms of perfect flowers filiform; 
achenes 4 to 5-ribbed; pappus slender, 1 or 2-seriate. 
Species 12; in the tropics of both the eastern and western 
hemispheres. 
1. P. cylindrostachum Clarke Comp. Ind. 98, 1876. F. 
Vil. Nov. App. 116, 1880. Hook. Fl. Brit. Ind. 3; 275, 1881. 
Vid. Phan. Cuming. Filip. 122, 1885. Merr. Govt. Lab. Publ. 
27; 55, 1905. P. redolen Benth. in F. Vil. Nov. App. 116, 
1880. Monenteles redolens Lab. in DC. Prod. 5; 455, 1836.— 
A coarse 3 to 5 dm. high herb, with rigid densely woolly 
stems and erect branches. Leaves ovate, obscurely dentate, 
densely tomentose beneath, less so above. Clusters of heads 
sessile, forming a more or less interrupted terminal spike; 
bracts chiefly in two series, the basal one persistent and ` 
covered with a matrix of long woolly hairs; the upper series 
glabrous and caducous; corollas yellow; achene short, sub- 
glabrous; pappus nearly white, caducous, uniseriate. 
DISTRIBUTION: 
India, New Caledonia and Australia. 
