Araceae
Alocasia suhirmaniana Yuzammi & A.Hay
Nomenclature
SUMMARY
Terrestrial herb; rhizome 13–15 cm long; leaves 1 to 3 together; petiole to c. 60 cm long, sheathing in the lower c. 1⁄5 –1⁄4 , yellowish green, densely longitudinally and obliquely mottled purple-brown, minutely and densely puberulous, subtended by papery membranous cataphylls; blade broadly ovato-sagittate (shield-shaped), peltate, pointed down, thinly leathery, with the margin slightly undulate, glossy dark green adaxially with the major venation pale grey-green, dark purple abaxially; anterior lobe to c. 35 cm long × 10–24 cm wide, widest about 1⁄4 of the way distally from the junction with the petiole, the tip broadly acute to obtuse, shortly apiculate; anterior costa with up to 8 primary lateral veins on either side, the proximal ones diverging at 70–80°, the distal ones at c. 45°, with conspicuous purple glands in their axils abaxially; primary veins of anterior lobe each with 1–3 subsidiary veins thicker than, but running the same course as, the secondary venation; secondary venation inconspicuous, forming undulating intercostal collective veins; costae and primary veins prominent both adaxially and abaxially; posterior costae diverging at c. 35–45°; posterior lobes about 1⁄2 to 2⁄3 the length of the anterior, joined for c. 1⁄2 to 2⁄3 of their their length, the tips acutely rounded. Inflorescences paired, subtended by papery membranous cataphylls to c. 11 cm long; peduncle to 24 cm long; minutely puberulous in the upper part, purple brown; spathe c. 12.5 cm long, deep purple, slender, glabrous, abruptly constricted at c. 2 cm from the base; lower spathe subcylindric; limb narrowly lanceolate; spadix somewhat shorter than spathe, c. 10 cm long, slender, very shortly stipitate for 4 mm, stipe ivory; female zone c. 1.2 cm long, c.1 cm wide at the base, with c. 96 pistils; ovaries greenish yellow, unilocular; stigma bluntly 2–4-lobed, subsessile, yellow; interstice of sterile organs c. 0.5 cm long, narrowed level with the spathe constriction to c. 4 mm diam.; lowermost synandrodia strongly lobed, the rest rhombohexagonal, c. 1.5 mm diam.; male zone c. 2 cm long, 1 cm diameter, cylindric; synandria rhobohexagonal, the tops deeply impressed, c. 2 mm across, yellowish ivory; thecae opening by apical pores laterally displaced by lobed overgrowth of the synconnective; appendix c. 6 cm, 8 mm diameter at the base, yellowish, the interface with the male zone slightly constricted, the rest cylindric, somewhat rugose in the lower half, tapering in the upper third; fruit unknown.