Philodendron mello-barretoanum Burle-Marx ex G.M.Barroso
  • Arch. Jard. Bot. Rio de Janeiro 15: 94 (1957) 


Notes: Distribution: C. Brazil to Bolivia

General Description

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.

Stem erect, arborescent, covered with the scars of fallen leaves, with robust axillary prickles. LEAVES: Petioles flattened on the upper side, 62 cm long, 2.5 cm thick; blade triangular-sagittate in outline, bipinnatipartite, primary lateral divisions linear-lanceolate, acute, terminal division 3-furcate at the front, 2-furcate at the back; primary lateral veins distinctly prominent on both sides ('utrique'). INFLORESCENCE: Peduncle 9 cm long. Spathe thick, tube green 11-15 cm long; blade externally green, internally white, ovate cucullate, cuspidate, 8-9 cm long, barely distinct. Spadix: female zone 2.7-4 cm long, dorsally adnate to the spathe almost up to halfway; sterile male zone ('6-5-10') cm long, fertile zone 8.5-10 cm long. Pistils truncate from above, 8-10 locular, ovules 6-9 per locule, bi-tri-seriate; stigma lobes not derived from the margin; Staminodes clavate, 6 mm long.

Distribution

Philodendron mello-barretoanum ranges from the Brazilian State of Tocantins to Bolivia, occurring at the transition between savannoid formations in Central South America and the Amazon. It is not so common in limestone outcrops as P. lundii but it was recently found growing abundantly in a limestone cliff in Tocantins State.

Brazil (Goiás).

Distribution Map

 
  • Native distribution
Specimens
Found in
  • Southern America Brazil Brazil North
  • Brazil West-Central
  • Western South America Bolivia

  Bibliography

  • 1 Gonçalves, E.G. (2010). The Araceae from the limestone outcrops in Central-Western Brazil. Aroideana 33: 143-160.
  • 2 Gomes Gonçalves, E. & Nadruz Coelho, M.A. (2009). Araceae. Flora dos estados de Goiás e Tocantins 39: 1-109. Universidade Federal de Goiás.
  • 3 Govaerts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae (and Acoraceae): 1-560. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • 4 Goncalves, E.G. The Araceae from the Limestone Outcrops in Central-Western Brazil. Aroideana; Journal of the International Aroid Society 33, 160 (2010).
  • 5 Barroso, G.M. Araceae Novae. Arquiv. Jard. Bot. Rio de Janeiro. 15, (1957).

 Information From

CATE Araceae
http://araceae.e-monocot.org
Haigh, A., Clark, B., Reynolds, L., Mayo, S.J., Croat, T.B., Lay, L., Boyce, P.C., Mora, M., Bogner, J., Sellaro, M., Wong, S.Y., Kostelac, C., Grayum, M.H., Keating, R.C., Ruckert, G., Naylor, M.F. and Hay, A., CATE Araceae, 14 Dec 2011 . 17 Dec 2011.
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Global Biodiversity Information Facility
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eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
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World Checklist of Selected Plant Families
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WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
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