LEAVES AND HERBS. 
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longitudinally wrinkled, glandular hairy, nearly glab- 
rous, resinous ; internodes 8 to 35 mm. long. Leaf 
lanceolate or oblanceolate ; apex acute ; base sessile or 
amplexicaul ; margin entire or spinosely toothed ; 
upper surface light green or yellowish green, covered 
with resin and with occasional black disks of Puccinia; 
under surface grayish green, somewhat resinous; tex- 
ture somewhat coriaceous, brittle when dry. Heads 
many-flowered, globular or truncate-conical, about 1 
to 2 cm. in diameter, with numerous lanceolate- 
acuminate, imbricate and resinous involucral bracts; 
receptacle flat, deeply pitted; ray -flowers brownish 
yellow and pistillate; tubular flowers yellowish brown, 
perfect. Achenes slightly curved, somewhat com- 
pressed, about 3 mm. long, the base tapering, apex 
one to four-toothed. Odor aromatic. Taste aromatic 
and bitter. 
Grindelia Squarrosa. — Heads with spreading involucral 
bracts. 
Constituents. — An acrid resin ; volatile oil ; two 
glucosides, somewhat resembling the saponins in quil- 
laja and senega; an alkaloid; tannin; ash about 8 
per cent. 
MAKRUI5IUM (White Horeliound). 
The leaves and flowering tops of Marrubium vulgare 
(Fam. Labiatie), a perennial herb indigenous to Eu- 
rope and Asia, and cultivated in various parts of 
Europe and the United States, being naturalized in 
waste places from Texas and Mexico to Maine and 
Ontario. Marrubium is collected when the plant is in 
flower and dried. 
Description. — Stem quadrangular, yellowish or 
grayish green, 3 to 5 mm. in diameter, very pubes- 
cent; internodes 2 to 5 cm. long. Leaves broadly 
