Arisaema clavatum (Araceae)
Tuber subglobose or ovoid-globose, 2–4cm in diam. Cataphylls green, to 20cm, membranous, apex obtuse or acute. Leaves 2; petiole green, 40–60cm, proximal half sheathing; leaf blade pedate; leaflets (7–)11–15, sessile, oblong or oblanceolate, papery, base cuneate, margin entire, apex abruptly acuminate and caudate; central 5 leaflets nearly equal, 10–19 × 3–6cm, outward gradually smaller, outermost one 2–4 × 0.5–1.5cm; rachis between leaflets 5–15mm. Spathe green, sometimes purplish, with white stripes or not, 7.5–16cm in total; tube cylindric or narrowly funnelform, 3.5–8 × 1.3–2.5 cm, throat obliquely truncate or rounded, not recurved; limb oblong, 5–8 × 3–3.5cm, apex acute. Spadix unisexual; male cylindric, 1.2–1.7cm × ca. 3mm; synandria purple; anthers 2 or 3; thecae globose, dehiscing by apical pores; female conic or elliptic, 2–2.5cm × 7–8mm; ovary greenish, obovoid; ovules 3 or 4; stigma subglobose, ca. 1mm. Appendix sessile, green to purple, narrowly cylindric, 2.6–7cm, slender, ca. 1.5mm in diam., basal 2–3cm sparsely covered with acute and hooked neuter flowers (1–3mm), apex abruptly swollen into a clavate head 3–10 × 2–4mm, densely clavate-echinate.
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.
Bamboo thickets, broad-leaved forests.