cultivation to a height of 6-8 ft. Branches and panicles 
trichotomous, densely beset with viscous glands. Leaves 
opposite, thin, borne on long stalks, more or less triangular, 
with the stalks as much as 9 in. long, gradually smaller 
upwards to the inflorescence, acuminate, acute, coarsely 
serrate-crenate, glabrescent above, hairy and viscous, chiefly 
along the veins, beneath. Flower-heads numerous, corym- 
bose, in ternately branched panicles, white, fragrant, about 
x in. across. Bracts of the involucre about 20, in two 
series, lanceolate, acute, a little shorter than the flowers, 
prominently 2-ribbed, scarious or thin at the margin. 
Style-branches much exserted, divergent. Achenes about 
v2 in. long, black, glabrous, quadrangular. Pappus of 
about 10 or 12, slightly plumose bristles, as long as the 
corolla-tube.—W. Borrinac Hemstey. 
Fig. 1, a head of flowers; 2, a flower; 3,a bristle of the pappus; 4, anthers ; 
5, style-branches :—all enlarged. 
