Philodendron nullinervium E.G.Gonç.
  • Aroideana 25: 16 (2002 publ. 2003) 


Notes: Distribution: Brazil (Acre, Amazonas)

General Description

Hemiepiphytic herb. Stems green when young, becoming brown, alternating long and short internodes; internodes 1-13 X 1.8-2.5 cm, slightly flattened against the substrate. LEAVES: prophylls green, strongly two-keeled, deciduous, 7-23 cm long, sometimes curled; petioles 41-45 X 0.8-1.2 cm, terete, green, purplish at the apex, flaking at the apex when dry; sheath very short, up to 1 cm long; leaf blade fiddle-shaped, overall dimensions 33-42 X 17-22 cm, fresh leaves medium glossy green adaxially, slightly bluish (pinkish when young) and glossy adaxially, drying glossy brown on both surfaces; anterior division ovate, 27-33 X 14-22 cm, primary lateral veins not visible in either dry or fresh material, minor veins arising at a 50-70° angle, midrib reddish or pinkish abaxially, flaking when dried, apex long-acuminate, acumen 1.4-2 cm; posterior divisions 9-15 X 17-21.5 cm, posterior lobes oblique, elliptic to obovate, apex rounded, basio-scopic portion 2.5-3.5 cm wide, basal rib not at all naked. INFLORESCENCES usually solitary; peduncles 25-27 X 0.5-1 cm; spathe 8-8.8 cm long; tube green to whitish-pink outside, purple inside, 3.5-4 X 2-2.5 cm, lamina green with white margins outside, pinkish-white inside, 4.5-5 X 2.5-3 cm; spadix slightly longer than spathe, 6.5-9 cm long, fertile male portion 3.5-5 X 1-1.2 cm, producing abundant red resin, rounded to obtuse at apex, sterile male portion 0.5-0.6 X 1.1-1.3 cm, female portion 3-3.5 X 1.2-1.3 cm. Flowers: male flowers 3-5-andric, subprismatic to obpyr-amidal, 1-2 X 1 mm; staminodes 6-7 X 1-2 mm, usually eaten by beetles; gynoeci-um prismatic, 3-4 mm long, stigma ca. 1 mm diam., ovary 1-1.5 mm diam., 7-8 loc-ules, each locule 3-4 ovules attached at the middle of the flower axis, ovules elongated, funicles shorter than the ovules, with long trichomes at base. INFRUCTESCENCES: Berries unknown.

Distribution

Although P. nullinervium is known to occur only in western Amazonia (Brazilian states of Acre and Amazonas), it possibly also occurs in eastern Peru and southeastern Colombia.

Distribution Map

 
  • Native distribution
Found in
  • Southern America Brazil Brazil North

  Bibliography

  • 1 Govaerts, R. (2004). World Checklist of Monocotyledons Database in ACCESS: 1-54382. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • 2 Gonçalves, E.G. New Aroid taxa from Brazil. Aroideana 25, 35 (2002).

 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.
  • A All Rights Reserved
eMonocot
http://e-monocot.org
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
  • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
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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