Amorphophallus bognerianus Sivad. & Jaleel

Tubers depressed globose, ca. 9 cm in diam. and ca. 4.5 cm thick in reproductive phase, 7-14.5 cm in diam. and 4.5-10.5 cm thick in vegetative phase, skin light brownish; roots many, pale yellow in colour, 8-14 cm long, and ca. 0.2 cm in diam. Leaf trichotomously decompound; petiole smooth, 77-105 cm long, 1.5-3.8 cm in diam. at base, tapering towards tip, dark greenish with pale green, irregular, ovoid to oblong horizontal mottles, minute pale green lines also seen within the mottles, colour paler towards the tip, extreme base pale pink; Lamina 60-90 cm in diam., middle segment of rachis 7-11.2 cm long and lateral segments 4-8 cm long; leaflets oblong to elliptic, acuminate at apex, base unequal and decurrent on rachis, margin wavy, greenish above, paler beneath, varying in size, small leaflets 6-10 cm long and 3-5.2 cm broad, large leaflets 20-26 cm long and 5.5-8.0 cm broad; primary veins closely parallel and united below the margin forming a submarginal collective vein. Bulbils produced at the junction of the rachises and at axils between the rachises and their branches, brown in colour, subspherical, each 0.6-3.5 cm diam. and 0.5-1.5 cm thickness. Inflorescence with peduncle short, cylindric, smooth, 11.0-15.5 cmlong and O.7-0.9 cm in diam. at base, gradually narrowed to tip, identical with the petiole in colour and pattern of mottles; Spathe broadly lanceolate, 13.0-25.0 cm long, differentiated into a basal convolute tube and an upper expanded limb, without constriction in between; convolute basal tube apically dilated, funnel-shaped, 2.0-2.6 cm in diam. at base, 3.5-4.0 cm diam. at top; limb 8.5-13.0 cm broad at the centre, tip acute and cucullate, pale pinkish outside, with narrow horizontal brownish green patches at basal convolute part, the patches vertical on the limb portion, and brownish green mottles towards the tip, pinkish inside with minute murications at base, smooth and paler above. Spadix subsessile, shorter than the spathe, 9.5-13.0 cm long; stipe 0.2-0.3 cm long, .6-.9 cm in diam., pale pinkish; basal pistillate portion 2.5-2.9 cm long, 1.2-1.7 cm in diam., followed by a staminate portion 2.1-2.5 cm long, 1.2-1.7 cm in diam., and terminal fusiform appendix. Female flowers densely arranged, each flower 2.5-3.0 mm long, ovary ca. 1 mm long, 2-2.5 mm diam., spherical, dark reddish, one or two-locular, each locule with a single anatropous ovule; style very short, ca. 1.0 mm long, 1.5-2.0 mm in diam., colour same as that of ovary; stigma discoid, 2- or 4-lobed, ca. 2.5 mm in diam. Male flowers closely arranged, ca. 3 mm long, ca. 2 mm broad, cream-coloured, dehiscence by apical confluent pores. Appendix fusiform, 4.5-7.5 cm long, base 1.2-1.7 cm in diam., 1.5-2.0 cm at middle and gradually tapering to a rounded tip, yellow in colour with slight brownish, minute spinescent projections at maturity, especially towards the tip. Fruits elongate-ellipsoid, 1.5-1.7 cm long, ca. 0.7 cm in diam. Seeds 1.1-1.2 cm long and ca. 0.5 cm in diam.Amorphophallus bognerianus