White rockrose

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White rockrose

The cotton rockrose (Cistus albidus), also known as white rockrose or whitish rockrose, is a shrub characteristic of the garrigue, tolerating periods of drought well and thriving in calcareous soils.

Name

The plant is known in English as "rockrose" or "white dart."

Etymology

The name cistus comes from the ancient Greek κίσθοςkisthos, meaning "box, capsule," a reference to the shape of the capsule-like fruit.

The specific Latin epithet albidus, meaning "whitish," refers to the characteristic downy leaves and not to the flowers, which are pink in color. It is sometimes called whitish rockrose or white rockrose.

Features

Cistus albidus is a medium-sized shrub (between 0.5 and 1.2 m tall) belonging to the Cistaceae family.

Its light gray evergreen foliage consists of simple, sessile, opposite, oblong-elliptical leaves covered with stellate hairs.

It blooms from April to June, producing a helical, uniparous cyme inflorescence composed of flowers with five crumpled pink petals. The flowers attract bees, butterflies, and other insects, ensuring entomogamous pollination.

The fruits of Cistus albidus are dehiscent capsules with five valves. The fruits are dispersed by animals.

Distribution range

According to POWO, the natural range of this species is the western Mediterranean region, i.e., Algeria, the Balearic Islands, Corsica, France, Italy, Morocco, Portugal, Sardinia, and Spain.

In mainland France, white rockrose is mainly found in the Mediterranean south.