Sorbus vilmorinii (mountain slopes, roadsides, mixed forests along river banks, grasslands, bamboo thickets). "Sorbus vilmorinii" was described based on a specimen in cultivation that was an apomictic microspecies. However, almost indistinguishable specimens are diploid and frequent in the wild. Also hybrids are common in the wild. In cultivation, this plant provides a long season of interest as an elegant, compact tree which can be grown in smaller gardens. It has gained the Royal Horticultural Society's Award of Garden Merit. Like all rowans the fruit can be cooked and used to make bitter jellies or marmalades. Sorbus vilmorinii Sorbus vilmorinii, the Vilmorin's rowan
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