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Araceae
Philodendron davidneillii Croat
Nomenclature
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Family: AraceaeGenus: Philodendron
SUMMARY
Terrestrial; internodes short, 5 mm diam.; cataphylls not available; petioles 22.7-26.7 cm long, 4-5 mm diam., terete, drying flattened and relatively smooth, grayish brown; blades ovate-cordate, 21.9-25.4 cm long, 12.8-14.2 cm wide (averaging 22 x 14), 1.62-1.79 (averaging 1.72) times longer than broad, broadest at middle, 0.9 (0.8-1.0) times long as petioles, abruptly acuminate at apex, prominently lobed at base, drying papyraceous, grayish olive-brown and semiglossy above, grayish brown and semiglossy below; upper surface densely and minutely granular; lower surface densely and minutely granular; anterior lobe 19.7-22.9 cm long, with straight margins; posterior lobes 4.2-5.1 cm long, 2.4-2.8 cm wide; midrib drying flattened and paler above, flattened, medially ribbed and paler below; primary lateral veins 7 pairs, arising at a 55-60° angle, drying flattened and concolorous above and below; minor veins arising mostly from midrib but also from the primary lateral veins closer to margins, drying obscure above and moderately visible below; the cross-veins few, obvious but weak; laticifers inconspicuous, long and wavy; basal veins 3(4) pairs, 1st pair free to base, 2nd and 3rd pair fused to 2 cm; posterior rib gradually curved, naked 1 cm; sinus parabolic, 1.7-2.5 cm wide, 2-2.1 cm deep. INFLORESCENCE 1 per axil; peduncle 10.7-12.7 cm long; spathe white, 6.6-7.2 cm long, 2.4-2.7 cm wide when flattened, drying moderately coriaceous, medium reddish brown; spadix white; pistil 2 mm diam., the ovary walls with subglobular cellular inclusions near the apex; style 1.6-1.8 mm diam., thin, subrounded, plate-like and extending over the top of the ovary; stigma 1-1.2 mm diam., dark brown on reconstitution, covered by a thin almost translucent mantle ca. 1.6 mm diam.; ovules with axile placentation in the lower 1/2 of the axil, 8-10 per locule, 0.3-0.4 mm long; funicle 0.1-0.2. mm long.