Arisaema sinii (Araceae)
Plants dioecious. Tuber depressed globose, ca. 2 × 1.5cm, renewed seasonally, proceeding from a whorl of roots and a few globose offsets at apex around shoot. Cataphylls 2 or 3, whitish green, 5–12cm, membranous, apex acuminate. Leaves 1 or 2; petiole light green, unspotted, 20–30cm, basal 10–12cm sheathing into pseudostem; leaf blade glaucous abaxially, green adaxially, 3-foliolate; leaflets sessile, apex acuminate, with a short tail at tip; collective vein distinct, 3–7mm from margin; central leaflet rhombic, 8–15.5 × 6–13cm, base cuneate; lateral leaflets obliquely ovate-rhombic, 9–18 × 6–11cm, base obtuse on outer side, attenuate on inner side. Peduncle emerging from pseudostem, green without spots, 21–25cm, shorter than petioles, curved forward after flowering. Spathe pale green; tube white at base, funnelform, 3.3–5cm × 10–15mm, throat margins auriculate, recurved outward; limb arching forward and downward, ovate, 4–6 × 2.6–3.9cm, with longitudinal white lines inside, apex occasionally with a tubular tail 5.5–7.5cm. Spadix unisexual. Female spadix: female zone green, conic, ca. 15 × 8mm; ovaries densely distributed, globose; stigma sessile and rounded with serrate margin; appendix sessile, erect, pale green, cylindric, ca. 2.5cm × 3.5mm, attenuate to base, usually with a few subulate neuter flowers ca. 3mm at base. Male spadix: male zone 1–1.5cm; synandria of 2 or 3 stamens, violet; thecae globose, dehiscing by apical pore; appendix as in female spadix, erect, 2.2–3cm, without neuter flowers. Infructescence curved forward or pendulous.
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.
Evergreen forests, secondary Pinus forests, grasslands in limestone areas.