A470 A FLORA OF MANILA 
8. Leaves obovate, toothed; flowers purplish........................ 2. B. mollis 
8. 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, suffrutescent, 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. pl. 403.) 
In open waste places, fl. Feb.—April.; widely distributed in the Phil- 
ippines. India to Malaya. 
2. B. motuis (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 bracteoles densely pilose,.green or purplish. 
Flowers with purple tips. 
In open, dry or damp places, fil. 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 0.8 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 50 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, erect, 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 
cnly 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 
