Dracontium angustispathum G.H.Zhu & Croat

Tuber hemispherical, 6-10cm diam., 5-6cm thick, flat above, rounded and white to brown below, 10-15 cm below ground level; tubercles abundant, rounded or cylindrically elongated, 0.5-1cm diam., 0.6-1cm long, borne around the periphery of tuber; cataphylls 2 or 3, 2-15cm long, 1-2.5cm wide, light brown, reaching or surpassing ground level. Leaves solitary; petioles 1-2m long above ground, 1.5-3.5 cm diam. at midpoint, dark green or brownish green, contrastingly mottled with dirty white or pale green blotches and forming a reptilian pattern, usually smooth in upper half and with irregular protuberances in lower half; juvenile blade sagittate, or sagittately lobed; mature blades spreading horizontally, 1-1.2m diam., thinly coriaceous, rarely fenestrate (sometimes fenestrate in juvenile leaves), never variegated, without raphide cells or dark markings, semiglossy and medium green above, matte and medium green below; middle division once or twice trichotomously branched, 35-55 × 25-35cm, with terminal subdivision consisting of three sections, with each basal subdivision often consisting of an entire segment; lateral divisions twice dichotomously branched, 35-55 × 25-35cm, with terminal subdivision often consisting of an entire segment, with basal subdivision often consisting of an entire segment; terminal and subterminal sections free, each usually consisting of a single segment; leaf segments often entire, broadly oblanceolate, more than 5cm wide on each side of the major ribs, lanceolate, mostly free from each other in each division, without contrastingly smaller rounded or triangular segments; apices caudate; ultimate segments 20-35cm long; basal segments absent; rachises patterned similar to petiole but in much paler shades, smooth; tertiary veins prominent above, or weakly raised below; bracteoles 2 or 3, 5-20cm long, 1-2cm wide, dark brown or light brown, the longest one much shorter than the peduncle, confined at the base of the peduncle. Inflorescence solitary, appearing before or after new leaf; peduncle (35-)45-65 cm long above ground, 0.5-1.5cm diam. at midpoint, less than half as long as the petiole, mottled similar to petiole but deeper in color, dark green, smooth in upper half; spathe 6-10 × 1.5-2cm, cymbiform, non-cucullate, erect or slightly arching, apex caudate, 3 to 5 times longer than the remainder of the spathe; inner surface semiglossy, maroon, with translucent area obscure (to 3mm height); outer surface dark purple, matte; margins entire, broadly overlapping or convolute in the lower two-thirds; veins obscure inside and outside, similar to the spathe in color; spadix hidden, sessile, cylindric, light brown or purple, 2-5cm long, 0.5-1cm diam. at anthesis. Flower tepals 5 to 7, 1.5-2 × 1-1.5mm, pale green; stamens 6 or 7; filaments 1.5-2mm long; anthers 0.5-1mm long, slightly exserted; ovary bilocular, pale green; stigma unlobed, or 2-lobed; style 1-2mm long above tepals, green, persistent. Infructescence with spadix 6-9cm long, 1.5-2cm diam. in fruit; berries 1.1-1.8cm diam., 0.8-1cm thick, obliquely obovoid, apically apiculate; young berry medium green; mature berry orange, with abundant raphide cells; seeds solitary, 0.5-0.65 × 0.4-0.5cm, rounded or reniform, light brown, laterally flattened; dorsal ridges obscure.