Pipturus albidus is a shrub or small tree growing 2–6 meters tall, notable for its watery sap. Its branches are usually stout, covered with grayish brown to reddish brown bark, and exhibit a grayish to whitish tomentose or appressed hirsute surface, which can become more or less glabrate as it ages. The leaves are simple and alternate, with ovate to elliptic blades, occasionally showing a rhombic-ovate or elliptic-lanceolate shape, measuring (5–)7–20 cm in length and (2.2–)3–15 cm in width. Younger growth can have leaves up to 41 cm long and 30 cm wide. The leaves feature an acuminate to acute apex, a subcordate to rounded or broadly cuneate base, and are hirsute at least along the veins. The surfaces of the leaves may be sparsely or moderately hirsute overall, with appressed hairs and woolly pubescent areoles that sometimes completely obscure the surface. The upper surfaces might appear somewhat glaucous, while the lower surfaces are typically dull white to gray or olive-gray, with possible red-tinged veins. The flowers are unisexual, with monoecious or dioecious arrangements in sessile axillary clusters. The staminate (male) flowers have a 4-lobed calyx, while the pistillate (female) flowers feature a tubular calyx that enlarges in fruit. No petals are present in the flowers. The male flowers exhibit filaments that are incurved in bud and reflexed when shedding pollen, while the female flowers contain a superior ovary enclosed by the calyx. The fruit is an achene, pale brown to pale gray or yellowish brown, conical-ovoid to ovoid, and typically 0.9–1.7 mm long. The dry calyx closely encloses it but remains distinct, embedded within the fleshy receptacle. Each achene contains a single seed with minimal endosperm. It inhabits mesic valleys, mesic to wet forests, and diverse mesic forest environments between 70-1,870 meters.