. Bulletin (New York Ministère des Forêts), no. 11. Les forêts et la foresterie. CXI LA PLAQUE. CLUB D'hercule 1. Ion de Seel ii IhjiimIi iixniiid Icjivi avec i'S, x L 2. Une panicule de'tlowt est. x h. '.',. Une panicule ot finil. x . 4. Un hiver, twiii x J. r-gt ;. L'article d'une taille d'hiver, naluial twiy. Deuxième exposition intentionnelle 205 HERCULES' CLUB Aralia spinosa, Linné et DESCRIPTIONâThis Hpicies famille genre appartiennent à l'fauiily Arulia, Ginseng- ccufc, qui comprend environ 52 jrenera avec 450 espèces d'herbes, plantes grimpantes, d'arbustes et d'arbres. Le nienibers sont largement distribués, mais plus commun dans les

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. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. PLATE CXI. HERCULES' CLUB 1. Seel ion of ii IhjiimIi with i iixniiid Icjivi'S, x L 2. A panicle of tlowt'is. x h. '.', . A panicle ot finil. x . 4. A winter twiii, x J. r>. Section of a winter twiy, naluial size. INTENTIONAL SECOND EXPOSURE 205 HERCULES' CLUB Aralia spinosa, Linnaeus FAMILY AND GENUS DESCRIPTIONâThis Hpicies belong to the Ginseng fauiily, Arulia- ccufc, which comprises about 52 jrenera with 450 species of herbs, vines, shrubs, and trees. The nienibers are widely distributed, but commonest in the tropics. The English Ivy (Hedera Helix L.) Jin evergreen climber, is one of its most coitunon representatives. The Common Ginseng (I'anux qun(iuefolium), is a well-known memlHr of this family. The flora of Pennsylvania includes 2 genera with 6 species. The species described here is the only tree representative in ^â orth Amtrica. The genus Aralia to which it belongs comprises about 30 species, mostly herbs?, native to North America and Asia. FORMâIt may attain a height of 40 ft. Avith a diameter of 12 inches, but usually 10-20 ft. in height with a diameter of 4-8 inches. Trunk may be branchless or sometimes covered with stout widespreading branches. BARKâThin, brown outside, yellow inside, at first smooth, later divided into rounded broken ridges. TWIGSâVery stout, J-s of an inch in diameter, arined with stout, scattered prickles, rough- ened by long narrow leaf-scars wliich nearly encircle the twig. BUDSâAlternate; terndnal bud present, about J-i of an inch long, chestuut-browni, conical, blunt pointed. Lateral buds i cf an inch long, flattened, often triangular. LEAVESâAlternate, compound or doubly compound often 3 ft. long and 2 2i ft. wide. Leaflets ovate, 2-3 inches long, thick, wedge-shaped or rounded at base, sharp-pointed at apex, serrate on margin, sometimes a little hairy on lower surface. Enlarged bases of the leaf- petioles sheath the twigs. LEAF-SCARSâAlte

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