Allium pseudoalbidum is a small herbaceous perennial plant that grows in loose tufts, reaching 8–10 cm in height. The plant develops few conical-cylindrical bulbs that grow on short, branched rhizomes (underground stems). Its leaves are filiform (thread-like) and semi-cylindrical, measuring 0.5–1.5 mm in width. Unlike some related species, the leaves of A. pseudoalbidum do not turn reddish when dried. The leaves are about as long as the flowering stem.[3]
The inflorescence (flower cluster) consists of a sparse umbel containing only 3–8 flowers. It is protected by a two-valved spathe (modified bract) that is acuminate (tapers to a point) and either equals or is shorter than the umbel. The flower stalks (pedicels) are of equal length, about 1.5–2 times longer than the perianth, and lack bracts.[3]
The flowers feature white perianth segments (tepals) of about 4 mm in length, which are lanceolate (lance-shaped) and somewhat pointed, often with pink midveins. The stamens have filaments equal in length to the perianth segments. These filaments are fused at their bases both to each other and to the perianth. The inner filaments are triangular in shape and roughly twice as wide at the base as the outer ones. The style (female reproductive part) does not extend beyond the perianth.[3]
Allium pseudoalbidum is closely related to A. albidum but can be distinguished by its thread-like leaves (which do not redden when dried) and its fewer-flowered umbels.[3]
