A small plant of the pink family, with inconspicuous white flowers, native to north temperate regions.
- Genus Sagina, family Caryophyllaceae.
- Even Antarctica's only two species of flowering plants, hairgrass and pearlwort, have changed their positions of dominance: the moss-like pearl-wort appears more adaptable to the warming.
- Detailed studies of the leaf micromorphology in the Antarctic pearlwort were carried out.
- Only two vascular plants, Antarctic hairgrass and Antarctic pearlwort, have colonized the Maritime Antarctic.
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