Arisaema echinatum (Araceae)
Tuber depressed globose, 2–4cm in diam. Cataphylls 2, green, 4–20cm. Cataphylls, petiole, and peduncle green, unmarked. Leaf solitary; petiole ca. 30cm, basal ca. 6cm sheathing into pseudostem; leaf blade radiate; leaflets 7–11, sessile, glaucous abaxially, green adaxially, narrowly elliptic or oblanceolate, unequal, attenuate to base, apex long acuminate, sometimes caudate with a short filiform tail; central leaflet ca. 12.5 × 2.8cm; outer leaflets 7–8.5 × ca. 1.4cm. Peduncle emerging from petiole sheath, much shorter than petioles, ca. 17cm. Spathe green, not marked by spots or stripes; tube cylindric, ca. 5.5 × 1.5cm, slightly recurved at throat; limb slightly outcurved at base, otherwise incurved, ovate, ca. 8 × 5cm, long caudate, with filiform tail to 8cm. Spadix unisexual; female zone conic, ca. 2.3 × 1.4cm, flowers dense; ovary green, subglobose; stigma punctate, violet; male zone 1.5–3 cm, 3–5mm in diam. at base; synandria lax; anthers 4, dehiscing by apical pores. Appendix green, cylindric, ca. 4 cm × 5–6mm, base abruptly narrowed and stipitate, apex obtuse and echinate; stipe ca. 5 mm.
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.
Forested slopes.