Philodendron meieri

Terrestrial; internodes long 6-9 cm, 1.9 cm diam., with flaky light yellow-brown epidermis; cataphylls not available; petioles 51.8 cm long, 7 mm diam., subterete, weakly sulcate drying medium to dark brown; blades narrowly ovate-sagittate, 37.2 cm long, 24.8 cm wide, 1.50 times longer than broad, broadest at petiole attachment, 0.72 times long as petioles, abruptly acuminate at apex, prominently lobed at base, drying coriaceous, medium brown and weakly glossy above, slightly paler and semiglossy below; upper surface short and irregularly ridged upon magnification; lower surface short and irregularly ridged upon magnification; anterior lobe 24.7 cm long, with straight margins; posterior lobes 10.7 cm long, 8.7 cm wide, directed downward; midrib drying flattened, finely ribbed and concolorous above, narrowly rounded, finely ribbed and paler below; primary lateral veins 6 pairs, arising at a 55° angle near middle, drying convex, concolorous and frequently puckered up along their length above, narrowly acute and paler, occasionally with depressions (matching the raised areas on upper surface) below; minor veins arising mostly from midrib but also from the primary lateral veins closer to margins, drying obscure above and moderately visible and distinct below; basal veins 6 pairs, 1st and 2nd pairs free to base, 3rd and 4th pairs fused to 2.6 cm; posterior rib gradually curved, it is not naked; sinus narrowly spathulate, 13.2 cm deep, 2.6 cm wide. INFLORESCENCES short-pedunculate, up to four per axil; peduncle 2-4.6 cm long, 4 mm diam.; spathe 5.6-6.5 cm long, 2.5 cm diam. at anthesis, narrowly ovate-elliptic, drying moderately coriaceous, dark reddish brown; spadix 3-5 cm long, staminate portion 1 cm long, 1 cm diam.; pistillate portion 1.75-3.3 cm long, 1 cm diam. at base, 1.3 cm diam. at apex, much longer than staminate portion; pistils 2 mm long, less than 2.5 mm diam.; style 1.8-2.6 mm diam., the margins rounded, flattened and thin; stigma button-shaped, 0.5 mm diam., somewhat stalked, covered with a more or less funnel-shaped mantle that is only slightly narrower than the stigma; ovary 5-locular; ovules basal, 2 per locule, 0.2 mm long, the funicle ca. 0.1 mm long, usually with only one ovule developing into seed; seeds ovoid, 1.3-1.5 mm long, 0.9-1.1 mm wide, slightly narrow in one dimension, brownish green, semiglossy, minutely granular.