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LII. COMPOSITE 
2. ADENOSTEMMA. From the Greek aden , a gland, and 
stemma, 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, 6 x3 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 J 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, Jin. 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 ~ in., angled, 
black, viscid. 
Sutlej valley ; May-September. — Throughout India, ascending to 5000 ft. 
4. EUPATORXUM. 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 panicled . . 1 . E. Eeevesii. 
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 J in. long, in large, 
