Plant species

alpine rock-cress Arabis alpina

Brassicaceae

Species information

Description

A mustard-family plant with alternate leaves and four petals arranged in a cross; its fruit is a pod or short pod. A mountain perennial of calcareous rocks, screes and cool shaded slopes with white four-petalled spring flowers.

Plant traits

Growth form

forb

Life cycle

perennial

Height

10–40 cm

Typical season

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Active growth

Flowering

Fruiting

Timing varies with site and year.

Habitat conditions

Habitat

rocky habitats · scree · subalpine habitats

Light

full sun · partial shade

Moisture

dry · mesic

Soil

base-rich

Substrate

calcareous

Pollination

insect pollination

Status

native

Interesting facts

Its white four-petalled flowers appear in spring, and the low evergreen leaf rosettes can remain visible outside flowering time.

LifeSystems

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