Philodendron brantii Croat

Terrestrial; internodes ca. 80-83.5 cm long, ca. 0.6-3.0 cm diam., dark brown and finely fissured upon drying; cataphylls deciduous.  LEAVES moderately large; petioles 1.5-6.5 cm long, drying black-brown; blades 51-60 cm long, 45-47 cm wide, 1.2 times longer than wide, 12.6 times longer than petioles, large ovate-cordate-sagittate dark brown-drying gradually acuminate at apex, prominently lobed at base, dark green and semiglossy above, somewhat paler and semiglossy below, drying dark grayish brown above, yellowish brown below; midrib slightly raised and concolorous above, raised-flattened finely ribbed and concolorous below; posterior rib short, moderately straight, naked about half its length; basal veins 8-9 pairs, 1st pair free to the base; posterior rib long and prominently curved with 3rd and higher order basal veins fused to 2-3 cm; primary lateral veins 5-6 pairs arising at a 40° angle with 11-12 pairs of basal veins, drying similar to midrib below, raised and concolorous above; minor veins indistinct, numerous, close.  INFLORESCENCE 1 per axil, long-pedunculate; peduncles 10 cm long; spathe 26 cm long; spadix 22.5 cm long; pistillate portion 8 cm long, 1.7 cm diam.; staminate portion 15 cm long, sterile staminate portion 1.4 cm diam., ca. 3 mm long; pistils ovoid, 1.8-2.1 mm long, 2.2-2.4 mm wide, stigma 0.8-1 mm wide, disk-shaped with 6-7 pits around circumference and with a thin protruding mantle less than 0.2 mm wide; ovary 6-9-locular; ovules basal, 2 per locule, including funicle 0.9-1 mm long, funicle about as long as or slightly longer than ovule, thickened in lower 1/3 (presumably glandular), attached on lower outside edge of ovule. INFRUCTESCENCE 2.3 cm diam. upon drying, dark brown and finely ridged; spathe green externally and red on the inside in the tube; spadix in early fruit, pistillate portion 11.5 cm long, 3 cm diam., in early fruit with pistillate portion pale green, translucent;; styles 3-4 mm diam., flattened apically, light brown-drying; stigma button-shaped, funnel-shaped, 0.8-1.0 mm diam.; seed oblong, 1.6 mm long, 0.6 mm diam.