Arisaema victoriae V.D.Nguyen

Rhizome oblique or horizontal, light brown outside, violaceous in section, cylindric, 3–6 × 2–3cm. Cataphylls 3 or 4, grayish brown with purplish and black spots, longest one 10–15cm, apex mucronate. Leaves 2; petiole green, marked with purple, to 30cm, proximal 15–25cm forming pseudostem; leaf blade 3-foliolate, paler and evidently veined abaxially, shiny green adaxially; central leaflet elliptic, 9.5–10 × 3.2–3.5cm, aristate at apex, with a tip 8–11mm; lateral ones slightly smaller. Peduncle erect, overtopping leaves. Spathe green tinged except for white center, ca. 12cm, with proximal margins incurved or ± overlapping to form a cylindric tube to 6 × 2.7cm, scarcely or slightly auriculate at throat; limb subovate-lanceolate, ca. 8 × 4cm, apex aristate and recurved. Male spadix subsessile, ca. 16 cm; fertile zone green, subterete, gradually attenuate distally, ca. 4cm, loosely flowered; male flowers stipitate, usually diandrous; stipe 0.2–0.9mm; thecae ellipsoid, 0.4–0.7mm; appendix extending beyond throat of spathe tube, recurved, greenish, horsetail-shaped, ca. 12cm, with many filiform subulate neuter flowers; proximal neuter flowers scattered, 3–4mm; distal ones numerous and crowded, 2.5–5.5cm. Female spadix unknown.