Philodendron pokigronense Croat

Hemiepiphytic to 5 m; internodes 2.2-3.7 cm long, 1-2.2 cm diam., medium-dark green, weakly glossy, soon gray-brown, eventually yellow-brown,drying1.1-1.3cm diam.; cataphylls unribbed to 1-ribbed, 10-15 cm long, deciduous, drying dark reddish brown; petioles somewhat spongy, 33-37 cm long, 1-1.2 cm diam. midway, medium green, densely short-dark-lineate, obtusely flattened at base adaxially, sheathed 5-6 cm, bluntly 1-ribbed, midway adaxially more or less flattened toward apex with broad sulcus at apex, rounded abaxially, drying 25.8-31.9 cm, olive dark brown. LEAVES: juvenile blades broadly lanceolate occasionally with one margin constricted to 20.4 cm long, 7.8 cm wide, abruptly acuminate at apex; preadult blades panduriform, to 29.2 cm long, 17.2 cm wide, abruptly acuminate at apex; blades somewhat panduriform, 31-39 cm long, 17-36.5 cm wide (averaging 36 x 22), 1.63-1.67 (averaging 1.65) times longer than broad, 1.16-1.34 (averaging 1.25) times longer than petioles, 17-36.5 cm wide across lateral lobes, 8-14 cm wide across constricted portion, 11.8-17 cm wide across medial lobe, abruptly acuminate at apex, subcordate at base, subcoriaceous, dark green, weakly glossy above, moderately paler and semiglossy below, lateral lobes 9-13 cm long and 6-10 cm wide, blade drying olive-brown to blackish brown and weakly glossy above, olive-brown blackish brown and semiglossy below, epunctate; upper surface drying irregularly and narrowly ridged, sparsely pustular; lower surface drying conspicuously irregularly flattened pustular; midrib broadly convex and slightly paler above, narrowly rounded and weakly paler below, drying narrowly raised, finely ribbed and slightly darker above, broadly convex, finely ribbed and darker below; primary lateral veins 6 per side, arising at 60-65u angle, drying moderately obscure, 3-ribbed and concolorous above, broadly convex, finely ribbed and darker below; minor veins arising mostly from midrib but also from the primary lateral veins closer to margins, drying prominently raised and irregular above and moderately visible, ridged, pustular, granular below; laticifers short and moderately obscure below; basal veins 2(-3) pairs; sinus, when present, arcuate or arcuate-decurrent on petiole 1-2 cm deep. INFLORESCENCES 9 per axil; peduncle 10.5 cm long, 7 x 9 mm diam., brownish, semiglossy; spathe medium green, heavily tinged with red, especially on open edge of spathe, 1.5-12.0 cm long, 1.2-1.9 cm diam. on tube, scarcely, clearly demarcated from peduncle, olive-green to medium yellow-green outside on blade, inner surface of spathe medium green and glossy, tinged with red on one edge of tube, stipe red, drying a reddish dark brown; spadix to 10 cm long, 8-9 mm diam. in middle, 7-8 mm at apex, medium yellow-green, semiglossy; staminate part, 6.5 cm long, 7 mm diam. at base, scarcely constricted; the sterile part white, 8 mm long, scarcely distinguishable; fertile spadix creamy-white; female portion, 4 cm long in front, 3.6 cm long in back, 9 mm diam. at base, 7 mm diam. at apex, drying blackish brown; pistils cylindroid-elliptic, 1.6-1.8 mm long, 1.3-1.4 mm diam., style bluntly 4-5-sided, the margins narrowly rounded; stigma button-shaped, 0.4 mm diam. with a medial depression and drying with a thin mantle nearly as broad as the apex of the style; locules 5-6 each containing one translucent envelope with 1 ovule; ovules basal, the ovule and funicle together 0.75 mm long, the funicle and ovule equally as long, 0.35-0.40 mm long, contained within a gelatinous matrix. Mature berries not seen.