This graceful clustering palm is the MacArthur Palm, Ptychosperma macarthurii. It belongs to the palm family, Arecaceae, and is native to New Guinea and northern Australia, where it grows in warm, moist rainforest habitats. It is now widely planted throughout the tropics as an ornamental palm.

Unlike palms that produce only one trunk, the MacArthur Palm forms clumps. New stems arise from the base, gradually creating a dense group of slender trunks that can resemble a small grove.

Each trunk is smooth, narrow and ringed with scars left by fallen leaves. Near the top is a smooth green crownshaft formed by the tightly wrapped bases of the living fronds.

The leaves are feather-shaped, with many dark-green leaflets arranged along a central stalk. One useful identifying feature is the irregular, jagged or notched appearance of the leaflet tips, which can look as though they have been torn.

The flowers appear on branching stalks that hang beneath the crownshaft. They are small and pale cream or white, but they may be produced throughout much of the year in a warm climate.

After flowering, the palm develops clusters of small rounded fruits. These begin green and mature to a vivid red, creating a striking contrast against the smooth trunks and green foliage. Birds may feed on the ripe fruits and help disperse the seeds.

MacArthur Palm grows best with warmth, regular moisture and good drainage. It can tolerate bright light, but its foliage often looks especially lush when the plant receives some protection from intense sun and drying wind.

Because it naturally produces many stems, it is commonly planted as a screen, an accent beside buildings or a tropical backdrop. The clump can become quite dense, although unwanted stems may be removed to create a more open appearance.

The palm was named in honor of Sir William Macarthur, a nineteenth-century Australian horticulturist who helped introduce and cultivate many plants.

This palm is valued less for great height than for its overall composition. The slim ringed trunks, neat green crownshafts, feathery leaves and bright red fruits combine to create a refined tropical appearance.

When standing beside it, the best features to point out are the cluster of separate stems and the ragged-ended leaflets—two details that help distinguish the MacArthur Palm from many other feather-leaved palms.