. Bulletin (New York Ministère des Forêts), no. 11. Les forêts et la foresterie. 199. CXI LA PLAQUE. CLUB D'hercule. 1. Section d'une branche avec des feuilles composées, x i. 2 une panicule de flowes, x i. 3. Une panicule de fuit, x 5. iclloTo t/t'wintlr twig, grandeur nature. CLUB D'hercule. Aralia spinosa, Linnaeus. DESCRIPTION DE LA FAMILLE ET DU GENRE Ce sprclcs bHongs-Ginseng à la famille. Aralin- ceae, qui comprend environ Sii genres avec 4r.O espèces d'herbes, de plantes grimpantes, d'arbustes,'ou d'arbres. Les membres sont largement distribués mais plus commun dans les tropiques. Le lierre (Hedera helix L.) un grimpeur d'Evergreen est l'un des

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. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 199. PLATE CXI. HERCULES' CLUB. 1. Section of a branch with compound leaves, x i. 2 A panicle of flowes, x i. 3. A panicle of fuit, x 5. t iclloTo/t'wintlr twig, natural size. HERCULES' CLUB. Aralia spinosa, Linnaeus. FAMILY AND GENUS DESCRIPTION—This sprclcs bHongs to the Ginseng family. Aralin- ceae, which comprises about Sii genera with 4r.O species of herbs, vines, shrubs, 'or trees. The members are widely distributed but commonest in the tropics. The English Ivy (Hedera Helix L.) an evergreen climber is one of its most common representatives. The Common Ginseng (Panax quinquefolium), is a well known member of this family. The flora of I'eiinsylvauiii comprises 2 genera with G species. The species described hero is the only tree representative in North America. The genus Aralia to which it belongs comprises about 30 species, mostly herbs, native to North America and Asia. FORM—It may attain a height of 40 ft. with a diameter of 12 Inches, but usually 10 20 ft. in lu'igUt witi; a diameter of 4-8 inches. Trunk may l)e brancliless or somi-tinics covfn'd with stout widespreading branches. BARK—Thin, brown outside, yellow inside, at first smooth, later divided into rounded broken ridges. TWIGS—Very stout, i-J of an inch in diameter, armed with stout, scattered prickles, roughened by long narrow leaf-scars which nearly encircle the twig. BUDS—Alternate; terminal bud present, about 1.-3 of an inch long, chestnut-brown, conical, blunt-pointed. Lateral buds J of an inch loucj, flattened, often triangular. LEAVES—Alternatp, compound or doubly compound, often 3 ft. long and 2-25 ft. wide, leaflets ovate, 2-3 inches long, thick, wedqe-thaped or rounded at base, sharp-pointed at apex, serrate on margin, sometimes a little hairj on lower surface. Enlarged bases of the leaf-petioles sheath the twigs. LEAF-SOARS—Alternate, narrow, long, about half encircle the twig, taper to a point, em

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