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Araceae
Amorphophallus bolikhamxayensis A. Galloway, A. Ongsakul, & P. Schmidt
Nomenclature
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Family: AraceaeGenus: Amorphophallus
SUMMARY
Tuber subglobose to depressed-globose, 20 cm in diam., 12 cm high, dark olive- brown to brown, densely covered with thick, short protrusions, sometimes associated with root-scars, producing fusiform offsets seasonally. Leaf solitary; petiole 80-100 cm long, 3.5-5 cm in diam., smooth, medium to dark olive-green or dark olive-brown or rust-brown with several rhombic or elliptic-elongate, pale whitish-greenish spots; lamina highly dissected, up to 180 cm wide, rachises broadly winged except the basal branching points; leaflets elliptic, tip acuminate, base broadly decurrent, 10-40 cm long, 5-12 cm in diam., upper side green, lower side paler. Inflorescence solitary, long-pedunculate; peduncle as petiole but considerably thinner, 50-60 cm long, ca. 1 cm in diam.; spathe erect, concave, arching over the spadix, broadly ovate, obtuse or acute, 12-15 cm long, 5-7.5 cm in diam., base shortly convolute, inside base smooth, outside pale brown, heavily splotched with irregular-shaped spots creamy white, the margin lined pinkish brown, inside creamy white with pale green splotches, limb outside pale brown, lightly splotched with lichen-shaped spots creamy white, margin lined pinkish brown, inside creamy white with pale green splotches. Spadix much shorter than spathe, 8.5-11.5 cm long, stipitate, stipe 0.5-1 cm long, color and pattern as peduncle at base, white at top; female zone cylindric, slightly conic or obconic, 1-2 cm long, 1-1.5 cm in diam., flowers congested; male zone conic or fusiform-cylindric, rarely obconic, sometimes (partly) laterally compressed, 2-3 cm long, 2-2.5 cm in diam., flowers congested; appendix ovate, conic or triangular-ovate, rarely subcylindric, inflated, or strongly laterally compressed, obtuse, rarely acute, creamy white, base strongly truncated, usually with a few broadly conic staminodes, surface smooth, often with a few longitudinal shallow or deep, broad folds, or irregularly folded throughout, 5-6.5 cm long, 3-4 cm in diam. Ovaries depressed, upper part truncate, ca. 2 mm high, 2-2.5 mm in diam., pale brown, bilocular; style distinct, ca. 0.6 mm long, ca. 0.4 mm in diam., pale yellow; stigma subglobose to slightly depressed, shallowly bilobed, ca. 0.5 mm in diam., yellow. Male flowers consisting of (2-)4(-5) stamens; stamens ca. 3-4 mm long; filament 1-2 mm long, connate into a thick column, ca. 2 mm in diam.; anthers ca.1.5mm long, ca. 1.2mm in diam., pale purple with an apical dark purple band; pores apical, fusing to form a common large pore per theca at male anthesis; connectives truncate to slightly sunken.