The drug plants of Illinois drugplantsofilli44teho Year: 1951 GRINDELIA SQUARROSA (Pursh) Dunal. Gum-plant, tar-weed, gum weed, rosin-weed. Compositae.—An erect, branched, gummy, smooth, var- nished-looking herb 8 to 24 inches tall, biennial or perennial; stems often reddish; leaves spatulate or oblong, sessile, often clasping the stem, alternate, yz to \]/i inches long, spinulose-dentate; the flower heads yellow, about 1 inch wide, solitary and terminal on the branches, very gummy and sticky. The leaves and flowering tops collected during full bloom. Rare to infrequent in gravelly and sandy
The drug plants of Illinois drugplantsofilli44teho Year: 1951 GRINDELIA SQUARROSA (Pursh) Dunal. Gum-plant, tar-weed, gum weed, rosin-weed. Compositae.—An erect, branched, gummy, smooth, var- nished-looking herb 8 to 24 inches tall, biennial or perennial; stems often reddish; leaves spatulate or oblong, sessile, often clasping the stem, alternate, yz to \]/i inches long, spinulose-dentate; the flower heads yellow, about 1 inch wide, solitary and terminal on the branches, very gummy and sticky. The leaves and flowering tops collected during full bloom. Rare to infrequent in gravelly and sandy, open soils and along railroads across northern Illinois and south to La Salle County. Contains a resinous varnish in which are the active principles, a volatile oil, a resin, and the alkaloid grindeline. Used as a stimulant for mucous membranes and as an antispasmodic. {^Grindelia robusta Nutt. of the Pacific coast is the plant that formerly was official. It and the foregoing species are believed to be about equally efficacious and are often mixed,] HAMAMELIS VIRGINIANA L. Witch-hazel, snapping hazel, striped alder, tobacco wood. Hamamelida- ceae.—^A moderate-sized shrub 8 to 15 feet tall; stems crooked; branches long and flexuous; bark brown, smooth; leaves suborbicular to obovate, 2 to 5 inches long, short-petioled, alternate, sinuate margined, usually acute, unevenly cordate; flowers yellow, with 4 linear, crinkled petals; fruit a woody, pubescent capsule containing 2 black, oblong seeds. Leaves, twigs, and bark collected in the autumn. Infrequent to abundant in dry woods in the northern half of the state; rare to absent southward. Contains tannin and a bitter principle ; the aqueous distillation of the leaves produces an aromatic principle in the extract (ex- tract of witch-hazel). Used chiefly in treat- ment of internal hemorrhage.
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