Philodendron avenium Grayum & Croat
  • Rodriguésia 56: 98 (2005) 

Notes: Distribution: N. Peru

General Description

Hemiepiphytic vine; internodes 3.5-6 cm long, drying 4-5 mm diam., coarsely and irregularly ridged longitudinally, pale yellow-brown, semiglossy, the epidermis otherwise smooth. LEAVES: Petioles 7-8 × 7.4-7.5 cm, sheathed to within 8 mm from base of blade; sheath 5.5-7.4 cm × 5-7 mm on each side, held erect, along with the shaft of the petiole finely ribbed on drying, yellowish brown; free part of petiole sharply and narrowly sulcate on drying; blades oblong-elliptic, 21.2-21.8 × 7.5 cm, 2.6-2.9 times longer than wide, 3.1 times longer than petioles, weakly short-acuminate at apex, narrowly rounded at base, drying gray and matte above, paler and yellowish gray and weakly glossy below; midrib scarcely visible, weakly raised and concolorous above, convex, light yellow brown and finely ridged below; primary lateral veins not at all apparent; minor veins arising at ca. 35° angle, narrowly and weakly raised above, scarcely raised below, both surfaces finely granular throughout including on the minor veins. INFLORESCENCE solitary; peduncle 5.5 cm long, drying 3.5 mm wide, coarsely ridged and densely pale-speckled; spathe 7.5-10 × 1.8 cm, medium green outside, drying matte, paler green within, drying yellow-brown with prominently raised purplish resin canals extending throughout much of the spathe (to within 2 cm from tip of spathe); spadix stipitate 3 mm long on back side, 8.7 cm long; pistillate spadix 2.5 × 1.0 cm, weakly tapered toward the base; staminate spadix drying 6.4 cm long, sterile portion 1 × 1.1 cm; fertile staminate portion narrowly tapered toward apex, 6 mm diam.; pistils narrowly tapered to apex, drying 0.5 mm diam.; style with a broad thin wafer-like apron 1-1.2 mm wide; stigma donut-shaped, 0.8 mm diam.

Diagnostic Description

It is characterized by finely ridged yellow-brown stems, nearly fully sheathed petioles, and oblong-elliptic, grayish-drying blades that lack obvious primary lateral veins on the dried blades.


Peru; Amazonas Department, Río Santiago valley.

Distribution Map

  • Native distribution
Found in
  • Southern America Western South America Peru


  • 1 Govaerts, R.H.A. (2011). World checklist of selected plant families published update. Facilitated by the Trustees of the Royal Botanic Gardens, Kew.
  • 2 Croat, T.Bernard, Swart, A. & Yates, E.D. New species of Araceae from the Río Cenepa region, Amazonas Department, Perú. Rodriguésia. 56(88), (2005).

 Information From

CATE Araceae
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
Global Biodiversity Information Facility
  • B All Rights Reserved
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from
  • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; Retrieved 2011 onwards
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