470 A FLORA OF MANILA 



3. Leaves obovate, toothed; flowers purplish 2. B. mollis ' 



3. Leaves oblong, lyrately lobed; flowers yellow 3. B. laciniata 



2. Heads few, in open panicles; plant only slightly pubescent; leaves 

 oblong-obovate, somewhat spiny-toothed 4. B. tenera 



1. B. balsamifera (L.) DC. Sambong (Tag.). 



A coarse tall, erect, suflfruteseent, strongly aromatic herb, densely and 

 softly pubescent^ 1.5 to 3 m high, stems up to 2.5 cm in diameter. Leaves 

 7 to 20 cm long, elliptic- to oblong-lanceolate, serrate, acute or obtuse, 

 base narrowed to the short petiole, which is often auricled or appendaged. 

 Inflorescence a large, branched, leafy panicle. Heads peduncled, on the 

 ultimate branches, numerous, 6 to 7 mm long, cylindric, the involucral 

 bracts green, narrow, pubescent, the flowers yellow. (Fl. Filip. pi, iOS.) 



In open waste places, fl. Feb.-ApriL; widely distributed in the Phil- 

 ippines. India to Malaya. 



2. B. MOLLIS (Don) Merr. (B. wightiana Auct.). 



An erect, somewhat branched, usually densely white-villous herb 20 to 

 40 cm high, slightly aromatic. Leaves petioled, thin, obovate, rounded or 

 obtuse, 1.5 to 4 cm long, irregularly toothed but not lobed. Heads numerous, 

 4 to 5 mm long, crowded or fasciculate, in oblong, spiciform, sometimes 

 paniculate inflorescence, the bj^acteoles densely pilose, green or purplish.. 

 Flowers with purple tips. 



In open, dry or damp places, fl. Jan.-April; widely distributed in the 

 Philippines, and undoubtedly introduced. India to tropical Africa, and 

 China, southward through Malaya to Australia. 



3. B. LACINIATA (Roxb.) DC. 



An erect, rather coarse, often much-branched, scarcely aromatic, pubes- 

 cent plant 0.? to 1.2 m high, the stems very leafy. Leaves 8 to 14 cm 

 long, deeply lyrately lobed, the lobes coarsely toothed, pubescent on both 

 surfaces. Heads many, ovoid, 6 to 7 mm long, 5 mm in diameter, nodding, 

 loosely clustered and racemosely arranged on the panicle branches, forming 

 an oblong inflorescence 25 to 60 cm in length. Involucral bracts green, 

 softly pubescent. Flowers yellow. 



In open dry waste lands, occasional, fl. Jan.-April; widely distributed in 

 the Philippines and probably introduced. India to China and Malaya. 



4. B. tenera Merr. 



A slender, ere'ct* slightly or not at all branched herb 20 to 50 cm high, 

 the stems nearly glabrous. Leaves oblong-oblanceolate, sessile or nearly so, 

 acute, base gradually narrowed, margins distantly and somewhat spiny- 

 toothed, not at all lobed, 2.5 to 8 cm long, the lower surface slightly papil- 

 late-pilose. Heads panicled, few, 6 to 7 mm long, the bracts linear, green 

 slightly pubescent or nearly glabrous. Flowers yellow. Achenes angled, 

 slightly hairy, 1.2 mm long. Central perfect flowers few, the corolla 4- 

 toothed. 



In open grass lands, La Loma to Maypajo, rare, fl. Nov.-Jan. Known 

 only from the Philippines. 



8. PLUCHEA Cassini 



Erect branched shrubs, more or less pubescent. Leaves alternate 

 toothed. Heads small, in terminal leafless corymbs, heterogamous, disk-like' 

 lilac, the flowers tubular, the outer ones female, many-seriate, slender the' 



