. Bulletin. Natural history; Natural history. 202 Illinois Natihai. Histoky Sikvpa' Bui-lktix SORBUS AMERICANA Marshall ^ Mountain Ash The Mountain Asli is a small tree, with a narrow, rounded crown of slender, spreading branches. The yellow-green leaves, which are 6 to S inches long, are made up of G to 8 pairs of sharply pointed finely toothed leaflets set op]iositely along the midrib, which is terminated by an odd leaflet. The flat inflorescence is 3 or 4 inches wide and is made up of many m small flowers, which stand on short. - stout, stalks. The bright, orange-red. fleshy fruit, wdiich i
. Bulletin. Natural history; Natural history. 202 Illinois Natihai. Histoky Sikvpa' Bui-lktix SORBUS AMERICANA Marshall ^ Mountain Ash The Mountain Asli is a small tree, with a narrow, rounded crown of slender, spreading branches. The yellow-green leaves, which are 6 to S inches long, are made up of G to 8 pairs of sharply pointed finely toothed leaflets set op]iositely along the midrib, which is terminated by an odd leaflet. The flat inflorescence is 3 or 4 inches wide and is made up of many m small flowers, which stand on short. - stout, stalks. The bright, orange-red. fleshy fruit, wdiich is about ^ inch in diameter, contains a brown seed about }i inch long. The trunk, which is cov- ered by thin, smooth, gray bark, is usually less than a foot in diameter; and the tree attains an ordinary height of a little over 20 feet. Distribution: The Mountain Ash ranges from Newfoundland to Mani- toba and southward to North Carolina and Tennessee. In Illinois it is a very rare tree and is known to us by only three records: W. G. Waterman re- ports it as one of the trees inhabiting the bogs of Lake County; a specimen from Oregon, Ogle County, bears the notation that the tree is "native"; and Pepoon says the tree is rare in the Ash. woods along Lake Michigan, being found near Glencoe, Wilmette. and Waukegan. L scs: The Mountain Ash has a pale-brown, close-grained, soft wood that is of no commercial value. The chief value of the tree lies in its decorative qualities, though the acid fruits are employed in the manu- facture of certain medicinal preparations. AMELANCHIER Medicus Service Berry Family Rosaceae Small, deciduous trees or shrubs, with alternate, broad-bladed, simple leaves and small white flowers borne in erect, terminal racemes. Each flower with o persistent sepals, 5 petals, 20 stamens, and o pistils united. Fig. 81. Distribution of tlie Mountain. Please note that these images are extracted from scanned page images that may have been digitally enhanced for
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