TABLE 1. Morphological comparison between Allium beypazariense and A. opacum which is its closest allied species.
A. beypazariense A. opacum
Outer tunics coriaceous, milky brown papyraceous, dark brown
Scape 12–15 cm × 5.5–6 mm, usually robust, firstly green, later greyish-green 10–20 cm × 0.5–1 mm, usually thin, firstly green, later yellowish
Leaves (1–)2–4(–5), cylindrical, 7–8 cm × (2–)2.5–3.0 mm, scabrid, shorter than scape 1–2(–3), filiform, cylindrical-semicylindrical, 10–20 cm × 0.5–1 mm, scaberulous, longer than scape or equal to scape
Spathe the longer 10–11 veined up to 8–10 cm; smaller 6–8 veined, up to 6–8 cm the longer 4–5 veined up to 2–2.5 cm; smaller (2–)3–4 veined, up to 1–1.5 cm
Inflorescence dense-effuse, 60–80 flowered, 4.5–5 cm diameter, pedicels almost equal or subequal, (1–)1.5–2(–2.5) cm, dark violet lax-effuse, 15–30 flowered, 1.5–2 cm diameter, pedicels subequal, 4–6 cm, greenish-grey
Tepals inners (4–)4.5–5 × 1.5–2(–2.5) mm, oblong, slightly mucronate at apex, distinctly brownish striated margins with dark greenish-purple midvein; outers (4–)4.5–5 × 2–2.5(–2.5) mm, oblong, distinctly mucronate at apex, whitish slightly pinkish striated margins with dark green midvein inners 3–4 × 0.5–1 mm, oblong-elliptic, rounded-obtuse at apex, yellowish-green with green midvein; outers 3–3.5 × 1–1.2(–1.5) mm, oblong, rounded at the apex, yellowishgreen with green midvein
Stamens connate at the base into an annulus no more than 1 mm high connate at the base into an annulus 1–1.2(–1.5) mm high
Anthers yellow but violet at margins, 0.8–1 × 0.4–0.5 mm yellow, 1–1.5 × 0.5–0.8 mm
Ovary oblong, sessile, 3.5–4 × 2–2.5 mm, papillose at apex lanceolate-ellipsoid, stipitate, 2–2.5 × 1–1.5 mm, not papillose narrowed at the apex
Style 2.5–3 mm long 1–1.5 mm long
Capsule globose 4.5–5 mm diameters; valves almost orbiculate, narrowed at base, truncate, surface rugose at the apex almost globose, narrowed at the base, 3.5–4 × 3.8–4 (–4.5) mm; valves obovoid, narrowed at base, slightly truncate, smooth at the apex
Seed 3–4 × 2 mm 2–2.5 × 1–1.5 mm