Arisaema pianmaense (Araceae)
Plants dioecious. Tuber depressed globose, 3–4cm in diam. Cataphylls 2 or 3, whitish with purple spots, to 21cm, membranous, apex acute. Leaf solitary; petiole pale green, with purple spots, terete, 30–50cm, basal part forming pseudostem; leaf blade 3-foliolate; leaflets subsessile, abaxially grayish green and densely covered with matted hairs and sparse golden scales, adaxially green and with dense papillae; central leaflet elliptic, 15–35 × 8–19cm, base cuneate, apex acute; lateral leaflets obliquely ovate-oblong, outer base ca. 2 × as wide as inner side, rounded. Peduncle terete, 18–32cm. Spathe purple with whitish longitudinal lines; tube cylindric, 6–7 × 1.5–2cm, throat margins slightly recurved; limb obovate-spatulate, 7–8 × 4–5cm, apex abruptly acuminate with a tail 2–3cm, strongly downcurved. Spadix unisexual; female zone ca. 2.5cm; ovary pale green, subcylindric; stigma sessile, concave; appendix sub-sessile, purple, proximally narrowly conic, distally tapering and drawn into flagellum, in total 24–30cm, pendulous, base truncate; male zone ca. 2cm; synandria of 2 or 3 stamens, connected filaments distinct; anther purple, fused from 2 thecae, dehiscing by horseshoe-shaped slit.
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.
Mixed forests.