(1) Quercus virginiana was the only arborescent species found at all five middens.(2) The calcareous outcrop area in Leeds, St. Clair County, Alabama, is a site with soils too thin to support woody arborescent vegetation and is subjected to frequent scouring from a near-by stream, keeping it in an open sunny condition.(3) In the late 1950s and early 1960s Santa Rita was the source of a large number of beautifully sharp, lustrous cuprite crystals coating arborescent and wiry masses of native copper.(4) Steve Whelan supplied valuable information on the discovery of the arborescent copper groups at the Central mine and allowed specimens in his personal collection to be photographed.(5) An amazing find of crystallized arborescent copper groups was made at the Central mine town site in spring 1999.(6) Borrichia arborescence and Vigna luteola were among the common plants found in tropical scrub habitats extending from the beach to the interior of the islands.(7) A directed graph is called an arborescence if, from a given node known as the root vertex, there is exactly one elementary path to every other node.(8) The independent evolution of arborescence in nearly all major groups of plants was key to the development of multistratal forests in some habitats at this time.
