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Araceae
Philodendron mello-barretoanum Burle-Marx ex G.M.Barroso
SUMMARY
Terrestrial, hemiepiphytic or epilithic shrub. Stem robust, woody, internodes 0.3-0.8 x 8-20 cm, covered by robust (thorn-like) and sparse intravaginal squamules, 8-12 x 3-6 mm, Petioles 70-80 x 2-2.3 cm, canaliculate adaxially,. Leaf blade bipinnatilobed 60- 72 x 50- 56 cm, ovate-sagittate to ovate- cordate in outline, anterior division 40-48 x 50-56 cm, lobes 6-7 per side, each one also pinnatilobed, secondary nerves arising in angle of 60-70°, sinuses between lobes 2-4 cm from midrib, apex acuminate, posterior divisions 16-18 x 50- 56 cm, acroscopic lobes 3-4, basiscopic lobes 2- 3, basal rib denuded for 3.5-4 cm. Inflorescence usually solitary. Peduncle 15-17 x 1-1.5 cm. Spathe 16-18 X 4-11 cm, green outside, white inside. Spadix 15 x 3 cm, fertile male portion 4.5-5 x 1.2-1.5 cm, sterile male portion 6-7 x 2-2.5 cm, female portion 3.6-4 x 2.5-3 cm. Male flowers prismatic, 2-3 x 0.5-0.6 mm, staminodes clavate, 3-5 x 0.8-1 mm, female flowers 4-5 x 2.3 mm. Berries immature 3-4 x 3- 5 mm, ripe fruits not seen.