Sorbus domestica of "serve", from Old English "syrfe", borrowed from the Latin name "sorbus"; it is unrelated to the verb "serve". Other English names include sorb, sorb tree, and whitty pear—"whitty" because the leaves are similar to rowan (i.e. pinnate), and "pear" due to the nature of the fruit. Sorbus domestica Sorbus domestica, with the common name service tree or sorb tree (because of its fruit), is a species of "Sorbus" native to western, central and southern Europe, northwest Africa (Atlas Mountains), and southwest Asia (east to the Caucasus). It may be called true service tree, to distinguish it from wild service
North Fork Mountain pine barren in the Central Appalachians. Other rocky summits, including the summit of Pike Knob, are blanketed by red pine ("Pinus resinosa") forests, here at their southernmost natural occurrences. The Monongahela National Forest has designated of old growth red pine forest on the mountain as the North Fork Mountain Red Pine Botanical Area. Another unusual vegetation type on North Fork Mountain is an elfin forest dominated by yellow birch ("Betula alleghaniensis"), mountain ash ("Sorbus americana"), and mountain holly. The oak-and-pine vegetation of North Fork Mountain contrasts strongly with the more diverse vegetation of the nearby mountains just west of the