Philodendron popenoei Standl. & Steyerm.
  • Publ. Field Mus. Nat. Hist., Bot. Ser. 9: 264 (1940) 

Notes: Distribution: C. America

General Description

Terrestrial plants, sprawling and clambering over ground or atop boulders, or becoming scantent and ascending trunks of trees to at least 5 m, the fertile branches divergent. Internodes 1.0-14.1+ cm long, to at least 1.5 cm wide, olive- to gray- green, matte to glossy, flattened on one side, drying yellowish, sulcate, the epidermis brittle and cracking; roots commonly absent from distal nodes, when present to ca. 2.5 mm in diameter. LEAVES: Petiole (20.9-) 22.6-38.5 (-44.7) cm long, P/L=0.77-1.11 (-1.35), matte to senmiglossy, sheathed (43-) 53-72 (-75)% , the sheath erect to involute, weakly greenish striate or whitish striate proximally, adnate distally or the free portion prolonged to 1.0 (-2.0) mm; unsheathed portion of petiole 7.4-12.5 (-17.4) cm long, terete (but slightly flattened above distally). Lamina (19.5-) 26.7- 36.6 (-42.9) cm long, (9.3-) 17.6-32.3 (-34.7) cm wide, L/W= (1.01-) 1.11-1.82 (-2.10), IQl=(0-) 1-4 (-5), thinly curvaceous to subcoriaceous, velvety-matte or weakly glossy to glossy above, matte below, virtually concolorous to moderately bicolored, broadly lanceolate to broadly ovate or suborbicular (widest below the middle), acute to short-acuminate apically (the acumen ca. 0.2-1.4 cm long), rounded-cordate basally with the sinus 0.4-1.8 (-3.4) cm deep; midrib flat or broadly sunken above and concolorous or slightly paler, convex and paler below; primary lateral veins 8-15 per side, ca. 1.3-4.9 cm apart, sunken and slightly paler above (at least proximally), convex or somewhat C-shaped below; interprimaries absent or obscure; minor veins distinctly visible below, darker and prominulous; abaxial laminar surface drying somewhat granular along the smaller lateral veins, with reticulate veins abundant throughout; white stitching and/or resin canals visible between the smaller lateral veins, the stitching following over the canals; adaxial surface abundantly granular along all veins, sparingly so on surfaces, with reticulate veins visible throughout (reticulate veins and especially granulations may be obscure on larger leaves); some white stitching visible, but no resin canals. INFLORESCENCES always solitary in Guatemalan and Honduran material, usually 2-3 in Costa Rican material; cataphylls infrequent or inconspicuous, ephemeral, 2.5-5.4 cm long, ca. 3-10 mm wide, blunt or rounded apically, obtusely 2-keeled; peduncle (2.2-) 3.6-5.3 (-10.2) cm long, P/S=0.37-0.51 (-1.06), medium green, bluntly angled, coarsely raised- whitish striate (especially distally); spathe at anthesis (9.4-) 11.1-13.6 cm long, 2.3- 2.8 cm wide, externally matte or weakly glossy, light green below, ochroleucous and densely fine-striate-lineate distally, internally uniformly cream-colored or pale greenish, weakly constricted ca. 5/12 from base; spathe drying densely and minutely granular on both surfaces, internally with very fine and closely subparallel longitudinal secretory striations from base to apex; acumen of spathe to at least 1.9 cm long. Stipe of spadix 0.3-1.0 cm long; cut axis of spadix pinkish; spadix 8.5-11.3 cm long, the fertile male portion 1.0-1.1 cm wide, cream-colored, slightly arched forward at female receptivity; sterile male zone 0.6-0.9 cm long; female portion of spadix 2.7- 4.2 cm long, F/S= (0.26-) 0.35-0.39, 1.1-1.2 cm wide, light green or yellowish; fertile male flowers 1.30-1.75 mm long, 0.6-1.2 mm wide, irregularly polygonal and somewhat laterally compressed; sterile male flowers 1.65-2.00 mm long, 0.85-1.20 mm wide, strongly laterally compressed, striate apically; female flowers 2.25-2.65 mm long, 0.7-0.9 mm wide, the stylar canals 4-6. INFRUCTESCENCES: Ripening fruits yellow-orange, yellow-brown, or orange-yellow. Seeds 0.6-0.9 mm (Croat to Grayum 59910, Grayum et al. 4771) to 1.3-1.6 mm (MacDougal et al. 3394) long, 0.15-0.30 mm wide, straight or slightly curved, finely striate with the striae finely cancellate, drying medium brown and semiglossy.


Iin Costa Rica and Panama, almost exclusively in the Tropical Wet Forest life zone.


Caribbean lowlands from Izabal, Guatemala, to central Zelaya, Nicaragua, and along the Pacific slope of Costa Rica from the Rio Grande de Hercules south to the Burica Peninsula where barely entering Panama.

Distribution Map

  • Native distribution
Found in
  • Southern America Central America Costa Rica
  • Guatemala
  • Honduras
  • Nicaragua
  • Panamá


  • 1 Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras.
  • 2 Hammel, B.E. & al. (2003). Manual de Plantas de Costa Rica 2: 1-694. Missouri Botanical Garden Press, St. Louis.
  • 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 Stevens, W.D., Ulloa U., C., Pool, A. & Montiel, O.M. (2001). Flora de Nicaragua. Monographs in Systematic Botany from the Missouri Botanical Garden 85: i-xlii, 1-2666.
  • 5 Grayum, M.Howard Revision of Philodendron subgenus Pteromischum (Araceae) for Pacific and Caribbean Tropical America. Systematic Botany Monographs. 47, (1996).

 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.
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eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from
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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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