LEAFLETS or PHILIPPINE BOTANY [Vor. I, Arti 7 
bracts in 2 series and almost distinct; ray flowers when 
present neutral, yellow; disk flowers perfect, fertile, with 
tubular 5-segmented corollas; anthers entire or minutely 
sagittate; style arms either short or subulate; achenes flat, 
quadrangular, or nearly terete, cuneate, oblong or linear; 
pappus of 2 to 6 teeth or awns, antrorsely or retrorsely 
barbed. 
Species about 90; chiefly American. 
1. B. pilosa Linn. Sp. Pl. ed. 2; 832, 1762-3. DC. Prod. 
5; 597, 1836. Mig. Fl. Ind. Bat, 2; 76, 1856. Benth. Fl. Hongk. 
188, 1861: Fl. Austr. 3; 5493, 1866. F: Vil. Nov. App. 
118, 1880. Mart. in Nuov. Giorn. Bot. Ital. 15; 297, 1883. Vid. 
Phan. Cuming. Filip. 122, 1885: Rev. Pl. Vase. Filip. 163, 
1886. Forbes and Hemsl. in Journ. Linn. Soc. Bot. 23; 435, 
1888. Ceron Cat. Pl. Herb. 103, 1892. Lautr. u. Schum. FI. 
Deutsch. Schutz. Suds. 601, 1901. Hayata in Journ. Coll. Sei. 
Tokyo 18; Art. 8, 20, 1904. King and Gamb. Mat. Fl. Malay. 
Penin. 16; 45, 1905. Merr. Govt. Lab. Publ. 27; 56, 1905. 
B. bipinnata Bleo. Fl. Filip. ed. 1; 623, 1837—A common 
introduced weed, much branched, 3 to 5 dm. high. Leaves 
trifoliate or 1 to 2-pinnatifid, petioled, glabrous or pilose, 
membranous, its segments ovate or lanceolate to oblong and 
serrately toothed. Heads solitary, upon rigid peduncles; outer 
bracts linear, strigose, shorter than the broad scariously 
margined inner ones; scales thin, hyaline margined, finely 
striate; ligule in our specimen rudimentary or absent; ache- 
nes glaucously black, costate and subterete, bearing 3 to 4 
unequal retrosely barked awns. 
DisTRIBUTION: 
Widely dispersed in all tropical and subtropical regions 
of both worlds. 
Luzon: 
Caloocan, Province of ‘Rizal, November 1901, Merrill 3647. 
Baguio, Province of Benguet, March 1904, Elmer 5769. 
MINDORO: 
Puerta Galera, October 1903, Merrill 3335. 
