Rowan some countries, but "Sorbus domestica", for example, has largely vanished from Britain, where it was traditionally appreciated. Natural hybrids, often including "Sorbus aucuparia" and the whitebeam, "Sorbus aria", give rise to many endemic variants in the UK. The traditional names of the rowan are those applied to the species "Sorbus aucuparia", "Sorbus torminalis" (wild service-tree), and "Sorbus domestica" (true service-tree). The Latin name "sorbus" was borrowed into Old English as "syrfe". The name "service-tree" for "Sorbus domestica" is derived from that name by folk etymology. The Latin name "sorbus" is from a root for "red, reddish-brown" (PIE "*sor-/*ser-"); English "sorb"
Aphis pomi "A. pomi", especially at high temperatures. Besides occurring on apple ("Malus domestica"), "Aphis pomi" infests other plants in the family Rosaceae including pear ("Pyrus communis "), hawthorn ("Crataegus monogyna"), medlar ("Mespilus germanica"), quince ("Cydonia oblonga"), mountain ash ("Sorbus aucuparia"), rose ("Rosa") and spiraea ("Spiraea"). It is an autoecious species, completing its life cycle on a single host species. Overwintering eggs hatch in spring and the aphids colonise the growing tips of the shoots causing the edges of the leaves to curl. These aphids are all viviparous females and give birth to other wingless aphids by parthenogenesis. In June some winged