Philodendron immixtum Croat
  • Ann. Missouri Bot. Gard. 84: 467 (1997) 

Notes: Distribution: Panama to Colombia

General Description

Hemiepiphytic; stem scandent, sap reddish, watery; internodes long, slender, more or less glaucous, (2)10--15 cm long, (0.7)1--1.5 cm diam., much longer than broad, dark olive-green matte to weakly glossy, becoming gray-green, drying light brown, epidermis sometimes cracking with loose flakes; roots ca. 5 per node, to 15 cm long, 2--3 mm diam., tannish gray, drying reddish brown, more or less smooth, long; cataphylls somewhat spongy, to 17 cm long, unribbed, weakly 2-ribbed or sharply (1--)2-ribbed (ribs 2 mm high), pale green, dark short-lineate, drying pale brown to yellowish brown, usually some deciduous, sometimes persisting somewhat intact, eventually fibrous, obtuse at apex, margins paler, yellowish; LEAVES: petioles 7.5--16(21) cm long, 2--10 mm diam., subterete, sharply D-shaped to slightly flattened adaxially, rounded abaxially, surface dark green-striate, matte to semiglossy, shortly dark lineate, with dark green ring around apex; blades narrowly ovate to ovate-elliptic, or rarely oblong-elliptic, subcoriaceous, semiglossy, strongly bicolorous, abruptly acuminate at apex (the acumen tightly inrolled to apiculate, 2--4 mm long), subcordate, rarely rounded at base, 16--36 cm long, 5--12 cm wide (1.9--3.7 times longer than wide), (1.3--3.1(3.8) times longer than petiole), about twice as long as petiole, broadest below middle, margins narrowly hyaline, upper surface drying green to grayish to brownish green; posterior lobes short, about as broad as long and held close to petiole; sinus shallow, 0--2.5(3) cm deep; midrib flat to weakly convex, concolorous or slightly paler than surface above, convex to bluntly acute, paler than surface below; basal veins lacking; primary lateral veins 4--8 per side, departing midrib at a 50--60º angle, more or less straight to weakly arcuate to the margins, sunken and paler than surface above, weakly raised and darker than surface below; interprimary veins weakly raised and darker than surface; minor veins distinct to weakly visible, darker than surface below, arising from both the midrib and primary lateral veins. INFLORESCENCES 1 per axil; peduncle 5--13 cm long, 3--7(11) mm diam., dark green; spathe 9--19 cm long, (1.1--2.1 times longer than peduncle), green, densely and obscurely short-lineate, narrowly acuminate at apex; spathe blade pale greenish white to white outside, pale greenish white, dark lineate inside; resin canals appearing as continuous lines, drying reddish brown, resin droplets forming on spathe surface within; spathe tube dark green in back, paler in front on open edges outside, red or violet-purple inside; spadix gradually tapered to apex, protruding out of the end of spathe, bluntly rounded to obtuse at apex, 10--11 cm long, broadest above the middle, constricted slightly above sterile staminate portion; pistillate portion pale green, cylindrical, 3.4--4.2 cm long, 3.7 cm long in front, 2.7 cm long in back, 9--11 mm diam. at apex, 10--11 mm diam. at middle, 9--11 mm wide at base; staminate portion 6.8--7.5 cm long; fertile staminate portion white, cylindrical to clavate, 9--12 mm diam. at base, 1.1--1.3 cm diam. at middle, 7--12 mm diam. ca. 1 cm from apex, broadest at the middle, broader than the pistillate portion, broader than the sterile portion; sterile staminate portion as broad as, narrower than or broader than the pistillate portion, more or less 12 mm diam.; pistils 1.9--2.3 mm long, 1.3--1.9 mm diam.; ovary (3)4--6(8)-locular, walls sometimes embedded with granular, crystal-like particles, locules 0.7--1.3 mm long, 0.4--0.7 mm diam., ovule sac 0.6--1.3 mm long, with sub-basal placentation; ovules 1(2) per locule, contained within transparent ovule sac, 0.4--0.7 mm long, longer than funicle; funicle 0.2--0.6 mm long, (can be pulled free to base), style 0.3 mm long, 0.9--1.4 mm diam., similar to style type B; stigma subdiscoid, unlobed, 0.7--0.9 mm diam., 0.2 mm high; the androecium truncate, margins 4--6-sided; thecae oblong to slightly ellipical, 0.4 mm wide, more or less parallel to one another; sterile staminate flowers 4--6-sided, 1--1.8 mm long, 1.1--1.7 mm wide. INFRUCTESCENCE with spadix yellowish orange, 8 cm long, 3 cm wide; berries concave at apex; seeds 1 per locule, 1.5--1.8 mm long, 0.6--0.7 mm diam., yellow-brown.


It occurs in Tropical wet forest, Premontane wet forest, and in wetter parts of Tropical moist forest life zones.


Ranges from Panama to Colombia (Golfo de Urabá), primarily along the Atlantic slope in Colón and Panamá Provinces but also in Panamá Province on the Pacific slope along the Río Majé.

Distribution Map

  • Native distribution
Found in
  • Southern America Central America Panamá
  • Western South America Colombia


  • 1 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.
  • 2 Croat, T.Bernard A revision of Philodendron subgenus Philodendron (Araceae) for Mexico and Central America Ann. Missouri Bot. Gard. 84, (1997).

 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
  • 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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