Arisaema smitinandii
Plants perennial, evergreen, basically dioecious. Rhizome ca. 5 × 2.5cm. Pseudostem absent. Leaves 1–4 together; petiole dull dark brown to violet, with light brown transverse markings, cylindric, ca. 25 × 0.5–1cm; leaf blade pedate with 3–5 segments; leaflets petiolulate, greenish, lanceolate, membranous, apex acute ending in a short arista; central leaflet with petiolule to 3cm, blade ca. 15 × 5cm, lateral veins numerous, base cuneate; lateral leaflets with petiolule to 5 mm, blade 12–15 × 3–4cm, base obliquely cuneate. Peduncle whitish, cylindric, much shorter than petioles, ca. 2 × 0.5 cm, surrounded by 3 cataphylls; cataphylls light brown, oblong, ca. 2, 4, and 6cm, respectively. Spathe: tube white-green, with numerous green longitudinal stripes, cylindric, ca. 3 × 1.5cm, throat margin widely recurved; limb arched over tube, green, with darker longitudinal veins, ovate-lanceolate, ca. 7 × 4 cm, apex acuminate, ending in a tail ca. 1cm. Spadix unisexual; female zone conic, 13–15 × 5–10mm; ovaries congested, green, fusiform, with 1 basal locule, each locule containing 3 ovules, fusiform and slightly curved; stigma disciform, borne on a short style; male zone cylindric, ca. 2 × 0.5cm; stamens loosely arranged, each consisting of 3–6 anthers, stipitate; thecae yellowish, subglobose, dehiscing by oblong pores; appendix sessile, dark green to purple, slender, 15–40 × 1.5–3mm, covered with numerous ascending filiform neuter flowers throughout its length; neuter flowers in distal section accompanied by an axillary budlike structure.
This material was reprinted with permission from the Missouri Botanical Garden Press, St. Louis, and Science Press, Beijing.
This material was reprinted with permission from the Missouri Botanical Garden Press, St. Louis, and Science Press, Beijing.
Forests.