Colonies are arborescent with straight tapered branches forming thickets. Sub-branches form at obtuse angles. Axial corallites are prominent and tubular. Radial corallites are small and curved near branch tips, becoming tubular further down branches where they project perpendicularly and are only slightly curved. These become incipient axial corallites which have small pocket-shaped radial corallites around their bases. All corallites have thick walls with rounded openings.