246 
LI I. COMPOSITE 
2 . ADENOSTEMMA. From the Greek aden, a gland, and 
s lemma, a wreath, referring to the glandular achenes. — All tropical 
regions. 
Adenostemma viscosum, Forst . ; FI Br. Ind. iii. 242. An erect 
herb, 1-3 ft., glandular- pubescent or nearly glabrous. Leaves 
opposite, lanceolate or ovate, 6x3 in., coarsely toothed, narrowed 
into the stalk; uppermost sessile. Heads discoid, corymbose, 
J in. diam. Involucral bracts herbaceous, spathulate, in 2 series ; 
flowers tubular, white, all similar ; pappus of 3 or 4 short, club- 
like scales; corolla J in., dilated upwards, 5-lobed ; style-arms 
long, thick. Achenes in., 3- or 4-angled, glandular. 
Sutlej valley ; August. — Throughout India, ascending to 5000 ft. — All 
tropical regions. 
3. AGERATUM. From the Greek a, without, and geras, old 
age; the plants continue in flower for a long time. — America. 
The following species is naturalised in nearly all tropical regions. 
Ageratum conyzoides, Linn . ; FI. Br. Ind. iii. 243. An erect, 
softly hairy herb, 1-3 ft. Leaves opposite, stalked, lanceolate or 
ovate, 3x1^ in., crenate. Heads numerous, discoid, J in. diam., 
in dense, rounded corymbs. Involucral bracts narrow, nearly 
equal, ribbed, acute, in 2 series ; flowers tubular, pale blue or white, 
all similar ; pappus of 3-5 linear, acute, minutely barbed scales, 
united in a toothed, cup-like ring ; corolla-tube dilated upwards, 
lobes 5, short ; style-arms short. Achenes : r l e - in., angled, black, 
viscid. 
Sutlej valley ; May-September. — Throughout India, ascending to 5000 ft. 
4. ETJPAT0RIUM. The classical name of some plant of this 
affinity, probably of E. cannabinum . — Most warm and temperate 
regions. 
Tall, erect shrubs. Leaves opposite or whorled. Heads 
numerous, discoid, in spreading panicles or compact corymbs. 
Involucral bracts few, unequal; receptacle naked; flowers 
tubular, pale purple or white, all similar ; pappus rigid, rough ; 
corolla-tube dilated upwards, lobes 5, short ; style-arms long, 
threadlike, pubescent all round, blunt. Achenes ^ in., angled. 
Inner involucral bracts obtuse. Heads panieled . . 1. E. Beevesii. 
Inner involucral bracts acute. Heads corymbose . . 2. E. cannabinum. 
1. Eupatorium Reevesii, Wall . ; FI. Br. Ind. iii. 243. Hoary- 
pubescent ; stems 4-5 ft., much branched. Leaves shortly stalked, 
lanceolate or ovate, 3x| in., coarsely toothed; upper smaller, 
often entire and alternate. Heads \ in. long, in large, spreading 
