Quercus virginiana

Quercus nigra L./Water oak Quercus prinus L./Chestnut oak Quercus rubra L./Northern red oak Quercus stellata Wangenh./Post oak Quercus velutina Lam./Black oak Quercus virginiana Mill./Live oak Sassafras albidum (Nutt.) Nees/Sassafras Ulmus americana L./American elm ... 

This may range from less than 0.34 for balsam poplar (i.e., Populus balsamifera) up to about 0.88 for hve oak (i.e., Quercus virginiana). If the specific gravity of wood is known, based on oven-dry weight and volume at a specified moisture content, the specific gravity at any other moisture content between 0 and 30 wt.% can be calculated using the equation ... 

Radioactive isoprene was liberated from leaf surfaces of Hamamelis virginiana and Quercus borealis when labelled intermediates of the glycolate pathway and labelled mevalonate were fed to them.55 It is not clear whether MVA was an obligate precursor of isoprene, although inhibition studies showed a distinct similarity between the biosynthetic pathway to isoprene and that to /3-carotene. 

C20H20O14 484.37 Tannin from witch hazel Hamamelis virginiana. Also in Quercus rubra and Castanea sativa (sweet chestnut). Prisms or needles + IfeHjO (H2O). 

Figure 66. Expected percentage of trees showing uptake with distance from application spot for sourwood (Oxydendrum arboreum) the white oak group (Quercus alba Q. steUata) dogwood (Comus florida), hickories (Carya spp.), the black oak group (Q. velutina, Q.falcata Q, coccinea, Q. rubra, Q. marilandica), and red cedar (Juniperus virginiana). Based on probit analyses. From Brown and Woods (1968).

Epilobium angustifolium Rubus idaeus R. fructicosus Rosa canina Geranium robertanium Acer ginnale A. saccharinum A. tartaricum Hamamelis virginiana Quercus rubra Castanea sativa... 

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