. Bulletin. Natural history; Natural history. Trees of 285 roads now produce the posts for their right-of-way fences by growing this tree for the purpose. From seed- ling to post size requires between 15 and 20 years of growth, during which time the trees, unless carefully pruned and cultivated, are continually in danger of destruction by the larvae of the Catalpa Sphinx Moth and a brown-rot fungus which enters the tree through the dead, unpruned branches and rots the wood. Soil, also, is an important consideration; for on poor, sandy, or gravelly soils this tree will not make a sati
. Bulletin. Natural history; Natural history. Trees of 285 roads now produce the posts for their right-of-way fences by growing this tree for the purpose. From seed- ling to post size requires between 15 and 20 years of growth, during which time the trees, unless carefully pruned and cultivated, are continually in danger of destruction by the larvae of the Catalpa Sphinx Moth and a brown-rot fungus which enters the tree through the dead, unpruned branches and rots the wood. Soil, also, is an important consideration; for on poor, sandy, or gravelly soils this tree will not make a satisfactory growth. In Stark County, a plantation situated on good prairie soil has yielded posts and stakes after 15 years, producing wood at an average rate per year of 163 cubic feet per acre and returning, thereby, a good rate of interest on the Fig. 118. Distribution of the Catalpa. LIST OF MINOR VARIETIES AND SPECIES OF TREES REPORTED TO OCCUR IN ILLINOIS Acer Ncgundo inolacciim Kirch. The opinion of E. J. Palmer, as ex- pressed in correspondence, is that this is the common Box Elder in Northern Illinois. Acer uigntiii Palmeri Sarg. A specimen in the Field Columbian j\Iu- seum collected by Agnes Chase (No. IT58) in woods at New Lenox May T and September 22, 1902, has been determined as this variety by H. Teuscher. Acer ruhruui toinentosittn Kirch. There are 2 specimens in th6 Univer- sity of Illinois herbarium, one from Herod, Pope County, the other from Alt. Carmel, Wabash County. Aescnlus discolor Pursh. Represented by a single specimen in the Alor- ton Arboretum. The locality is in Pope Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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