Sorbus vilmorinii Sorbus vilmorinii Sorbus vilmorinii, the Vilmorin's rowan or Vilmorin's mountain ash (), is a species of flowering plant in the family Rosaceae, native to Sichuan, Tibet and Yunnan in China. It is a deciduous shrub or small tree, tall, with ferny leaves, each having multiple leaflets that turn purple in autumn (fall). The fruits, which can last through winter, are crimson, turning to pale pink. They are eaten by birds when there is no other food supply nearby. The specific epithet "vilmorinii" refers to the 19th century French horticulturalist Maurice de Vilmorin. It grows in a wide range of habitats
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