Rose tree

In computing, a multi-way tree or rose tree is a tree data structure with a variable and unbounded number of branches per node. The name rose tree for this structure is prevalent in the functional programming community, e.g., in the context of the Bird–Meertens formalism. It was coined by Lambert Meertens to evoke the similarly-named, and similarly-structured, common rhododendron.

Definition

The following is a definition in Haskell:

Sources

External links

Rhododendron maximum

Rhododendron maximum — its common names include great laurel,great rhododendron, rosebay rhododendron, American rhododendron and big rhododendron — is a species of Rhododendron native to the Appalachians of eastern North America, from Nova Scotia south to northern Alabama.

Description

Rhododendron maximum is an evergreen shrub growing to 4 m (13 ft), rarely 10 m (33 ft), tall. The leaves are 9–19 cm (3–8 in) long and 2–4 cm (0.75-1.5 in) broad. The flowers are 2.5–3 cm (1 in) diameter, white, pink or pale purple, often with small greenish-yellow spots. The fruit is a dry capsule 15–20 mm (.60-.79 in) long, containing numerous small seeds. The leaves can be poisonous. Leaves are sclerophyllous, simple, alternate, and oblong (10 to 30 cm long, 5 to 8 cm wide). It retains its waxy, deep-green leaves for up to 8 years, but once shed are slow to decompose. It produces large, showy, white to purple flowers each June.

Range

Rosebay rhododendron is the most frequently occurring and dominant species of Rhododendron in the southern Appalachian region (Swanson 1994), and occurs occasionally on mesic hill-slopes throughout the upper Piedmont Crescent of the Southeastern United States.