Philodendron uliginosum Mayo

STEM: erect, 35-150 cm tall, up to c. 5 cm diam., sometimes branching at base to form clumps; adventitious roots not seen above ground; internodes 0.5-5 mm long, greyish-brown; prophyll scars 0.3-1.4 cm long, glossy greyish brown; intravaginal squamules inconspicuous, sometimes persistent, often lacking, small, patent, 1.5-3.5 mm long, 0.5-1.7 mm broad at base, triangular, acuminate, distant, inconspicuous on older part of stem; foliage leaf scars 2-2.9 cm broad, 2-2.5 cm wide, broadly obovate, rhombic or transversely elliptic, greyish-brown becoming grey on older stem portion. LEAF: prophyll about 17 cm long; petiole 25 - 40 cm long, 0.5-0.7 cm diam. at apex, sulcate adaxially with ± sharply angled margins, rounded abaxially, sheath 3.5-11 cm long; leaf blade triangular- to ovate-sagittate, rarely subhastate, margins entire, rarely repand, overall length (18-)20-46(-53) cm, overall width (10-)15-26(-34) cm, upper surface dark to mid green, glossy, lower surface paler, duller; anterior division 18.5-30 cm long, 16-26 cm wide, apex subacute to acute, primary lateral veins (5-)6-7 per side, arising at angle of 30-80° to midrib, somewhat paler than blade on both surfaces, finest parallel veins paler than blade on upper surface; posterior divisions 6-16 cm long, 0.24-0.34 x overall blade length, 8.5- 13 cm wide, basal ribs denuded for (0.9-)1.8- 4 cm, tip acute to subacute, rounded at extremity, primary acroscopic veins (l-)2(-3), primary basiscopic veins 0-3. INFLORESCENCE: peduncle 7.5 - 17(-22) cm long; spathe 10.5-15.5(-16.5) cm long, ca. 3.5-5.5 cm diam. at middle, somewhat constricted, decurrent for 2.5-3.5 cm, at anthesis outer surface green becoming yellowish- or white-membranous at margins, inner surface creamy white; spadix 9.2-9.9(-11) cm long overall, fertile male zone (3.0-)3.5- 4 cm long, (1.3-)1.9 - 2 cm diam., subclavate, white, sterile male zone 3.3-5.5 cm long, (1.3 -)1.7-2 cm diam., cylindric, female zone 1.8-2.5 cm long, (1.0-)1.4 - 1.5 cm diam. near base, tapering upwards. FLOWERS: stamens 5-5.5 mm long, 0.6-1.2 mm diam. at apex, tapering slightly towards base; staminodes 4.2-5.1 mm long, 0.7-1.4 mm diam. at apex, tapering somewhat towards base, prismatic, truncate; gynoecium 3-4 mm long, ovary 15-2.2 mm diam., ± cylindric or barrel-shaped, locules 3-6, ovules 1 - 4(-5) per locule, inserted from near base to somewhat above middle of locule, ± distant, style body somewhat narrower than crown, raphides abundant around stylar canals and in ovary axis, compitum not penetrating ovary, style crown as broad as ovary, densely tanniniferous, lobes well-developed, central dome lacking, stylar canals entering locules subapically, stigma 1.5-2.7 mm diam., completely covering style lobes, ± lacking tannin hairs. INFRUCTESCENCE: berry many-seeded, 1.0-1.2 cm long, 0.6-0.9 cm diam., ± cylindric, white to beige, with delicious mango-like flavour, stigma remnant blackish; seed 2.8-3.5 mm long, 1.6-2 mm diam., ovoid.