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Araceae
Philodendron werneri Croat
Nomenclature
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Family: AraceaeGenus: Philodendron
SUMMARY
Appressed hemiepiphytic climber; internodes short 1-2 cm length, 1.7-1.9 cm diam.; cataphylls 16.5-33.6 cm long, unribbed, deciduous possibly, drying intact with yellowish light brown epidermis; petioles 51.1-52.3 cm long, 4-7 mm diam., subterete, drying matte and greenish gray; blades ovate-cordate-sagittate, 37.2-43.2 cm long, 25.4-33.1 cm wide, 1.41 (1.19-1.56) times longer than broad, broadest at petiole attachment, 0.78 times long as petioles, abruptly acuminate at apex, prominently lobed at base, subcoriaceous, drying grayish green and matte above, grayish yellow-green and matte below; upper surface short pale-lineate along midrib; lower surface smooth, unmarked; anterior lobe 27.5-32.1 cm long, with straight margins, the distal margin broadly rounded; posterior lobes 12.7-15.2 cm long, 10.1-11.4 cm wide, directed downward and inward; midrib drying flattened, finely ribbed and concolorous above, narrowly convex, finely and acutely ribbed with granules and darker below; primary lateral veins 11 pairs, arising at a 55-60° angle, drying broadly convex and paler above, narrowly convex, finely and acutely ribbed with granules and darker 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; laticifers conspicuous and dark, short to elongated and continuous; basal veins 9 pairs, 1st and 2nd pair free to base, 3rd pair fused to 1.5-2.3 cm, 5th and 6th pairs fused to 3.8-4.8 cm, finely and acutely ribbed below; posterior ribs gradually curved, naked 1.5-2.2 cm; sinus hippocrepiform, 8.9-10.5 cm deep, 2.6-6.2 cm wide at middle. INFLORESCENCES up to 3 per axil; peduncle 4.3-6.8 cm long; spathe 8.1-10 cm long, 2-2.5 cm diam., moderately constricted above tube to 1.7 cm diam., drying coriaceous, medium reddish brown; spadix to 9.5 cm long; staminate portion 5.5 cm long, 10 mm diam. at widest point about 2/3 its length, ca. 6 mm diam. at 1 cm from tip; sterile staminate portion 1.4 cm long, 9 mm diam., the constricted portion 6 mm diam.; pistillate portion 3.1 cm long, 8 cm diam. midway, 7 mm diam. at apex ; pistils 2 mm long, 1 mm diam.; style narrower than the stigma with rounded margins; stigma ca. 1 mm diam., sometimes with a conspicuous pit for each ovule; ovary 0.8 mm long, 4-5 locular; ovules ca. 15 or more per locule with axile placentation.