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Araceae
Amorphophallus richardsiae Ittenb.
Nomenclature
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Family: AraceaeGenus: Amorphophallus
SUMMARY
Tuber and leaf unknown. Cataphylls 2(?), the inner 2.3−13.5 x 2−6 cm, the outer x 7 1.2 cm, broad-oval, creamy with a pink flush and brownish elongate-oval spots. Inflorescence to 40 cm long, long-peduncled, appearing before the leaf; peduncle 12−15 cm long, greenish with numerous small confluent, elongate to oval, dark green to brown spots. Spathe erect, 16−24 cm long, separated by a distinct constriction in an asymmetrical oval to triangular tube and a wide, triangular to oval limb; tube 5−8 x 4−6 cm, outside brownish green at the base, higher up becoming green, veins brownish to bright purple and densely covered with round dark greenish and brownish spots; inside at the base purple, with strongly raised veins, these crowded with warts and flag-shaped emergences, therefore veins frequently appearing as uneven or evenly high ridges; constriction inside with a 1−2 cm wide, greyish green waxy band; limb 10−17 cm long, upwards oblique, outside dirty green with violet veins, inside brown purple, margins undulate. Spadix sessile, 21−27 cm long, equal to or up to 6 cm longer than spathe; pistillate zone cylindrical, 1.2−2.5 x 1.2−1.5 cm, flowers congested; staminate zone cylindrical to slightly ovoid, 3.2−6 x 1−1.5 cm, flowers congested; appendix 14−20 cm long, elongate-conical to cylindrical, above the staminate zone slightly constricted and with grooves, purple; staminodes absent; without a sterile zone between the pistillate and staminate zone; ratio of pistillate to staminate zone length 0.35−0.4 : 1. Pistillate flowers 2.5−3.5 mm long; ovaries ovoid, 2−2.5 x 1.5−2 mm, 2−3-locular, dark yellowish; stigma sessile, shallowly 2−3-lobed, roundish flat in lateral section, circular to oval in cross section, 1−2 x 1−1.5 mm, brown to black. Staminate flowers 1−1.5 mm long; anthers cubic, free, 0.5 x 0.7 mm, bright brown; filaments 0.7−1 x 0.7−1 mm, free; connective slightly grooved and with dark strips; pores circular, one apical pore per theca. Infructescence unknown. Pollen inaperturate, exine striate.