Philodendron caranoense Croat

Epiphyte; internodes short, 5 cm diam.; cataphylls drying 20.2 cm long, bluntly 2-ribbed, marcescent, medium green becoming mushy at apex first, the basal portion dark brown, persisting, the epidermis reddish medium brown; petioles obtusely flattened adaxially, medium-green with many dark green lineations, drying broadly and acutely sulcate, 19-36.6 cm long, 6 mm diam., reddish medium brown; blades ovate-cordate, 25.4-39.2 cm long, 11.2-22.2 cm wide (averaging 30 x 15), 1.77-2.31 (averaging 2.11) times longer than broad, broadest above petiolar attachment, 1.1-1.4 (averaging 1.3) times long as petioles, abruptly acuminate at apex, (acumen to 1.3 cm long), prominently lobed at base, coriaceous, semiglossy, moderately bicolorous, drying grayish brown and weakly glossy above, yellowish brown and semiglossy below; upper surface short pale-lineate, moderately smooth, minutely areolate upon magnification; lower surface smooth, glandular-punctate, the glands mostly rounded and black; anterior lobe 26.2-35.1 cm long, with straight margins; posterior lobes 8.7 cm long, 5.7 cm wide, directed downward and inward; midrib broadly convex and slightly paler above, narrowly rounded and obtusely short dark-lineate below, drying broadly convex, finely ribbed and paler above, narrowly raised to narrowly acute, finely ribbed and darker below; primary lateral veins 7 pairs, arising at a 60° angle, obtusely sunken and more or less quilted above, narrowly convex and more or less concolorous below, drying weakly and broadly convex, slightly paler above, narrowly rounded, sharply 2-ribbed and darker below; minor veins arising from midrib, drying obscure above and moderately visible and distinct below; basal veins 3 to 4 pairs; laticifers very distinct, drying long and discontinuous, weakly raised appearing like minor veins; posterior rib gradually curved, naked 1 cm; sinus parabolic, 4.6 cm deep. INFLORESCENCES 3 per axil; peduncle 3.8-5.5 cm long, to 5 mm diam., whitish, drying reddish brown; spathe 10.5 cm long, 1.6 x 2 cm diam. when furled, flattening to 4 cm wide, green-white on both surfaces, matte outside, moderately glossy inside, abruptly acuminate at apex, with laticifers in lower 2/3 especially in lower 1/2; spadix 10.4 cm long, pistillate portion 5.8 cm long, 6 mm diam. at base, 8 mm diam. midway, 5 mm diam. near apex; male portion 2.8 cm long; staminate portion 4.4 cm long, 6 mm diam. 8 mm diam. midway, 3 mm diam. at apex, the sterile staminate portion 4 mm diam., scarcely distinguishable from the fertile portion; pistils 1.5-2.8 mm long, 1.8-2.3 mm diam.; styles light brown, irregularly rounded, drying with erect, moderately acute margins; stigma dark brown, 0.6-0.8 mm diam., weakly raised, the stigmatic papillae arising from a deep concavity, drying flattened and disk-like; locules 8-9, 0.8 mm long; ovules 1-2 per locule, basally attached, contained within a gelatinous envelope, 0.6-1.0 m long, 0.1-0.15 mm long, 0.2 mm diam., the funicle about as long as the ovary.