Which of the following species is noted for its climbing ability and is scientifically classified under Hydrangea?

Hydrangea anomala subsp. petiolaris, also known as the climbing hydrangea, is well-known for its climbing ability. It is a woody vine that uses aerial roots to attach itself to various structures, allowing it to grow vertically along walls, trees, or trellises. This species produces beautiful white flowers in the summer and has heart-shaped leaves, making it a popular choice for ornamental use in gardens and landscapes.

In terms of classification, it belongs to the Hydrangeaceae family and is recognized for its distinct climbing habit, which differentiates it from other hydrangeas that predominantly grow as shrubs. This species not only adds aesthetic value to the garden but also contributes to biodiversity by attracting pollinators.

The other species listed do not belong to the Hydrangea genus, making them unsuitable for this question.