Philodendron devianum Croat
  • Willdenowia 40: 113 (2010) 


Notes: Distribution: Colombia

General Description

Terrestrial.
Juvenile plants with internodes 2–5 cm long, 1.5 cm diam.; cataphylls to 12 cm long. Leaves with petiole to 29 cm long, sharply flattened laterally, 8–10 mm diam., margins thin; blade broadly ovate-cordate, 18–20 cm long, 13–15 cm wide, 1.3–1.45 × longer than wide, c. 0.6 × as long as petiole, abruptly long-acuminate at apex, prominently lobed at base; primary lateral veins 3–4 pairs; basal veins 6–8 pairs.


Adult plants with internodes 2–5 cm long, dark green, moderately glossy, short white-streaked near nodes; cataphylls moderately fleshy, unribbed near base, acutely Dshaped toward middle, soft, medium green, deciduous except for a thin layer of the base which may adhere to stem. Leaves with petiole 52–80 cm long, obtusely flattened (preadult petioles sharply D-shaped), dark green with even darker streaks; blade broadly ovate, deeply cordate-sagittate at base, abruptly acuminate at apex, 29–50 cm long, 25–42 cm wide, 1.1–1.15 × longer than wide, dark green and glossy above,  moderately paler and matte below, drying dark grey-green and weakly glossy above, yellow-brown and matte below; margins broadly rounded; anterior lobe 21–36 cm long, margins broadly rounded; posterior lobes 12–20 cm long, 10– 18 cm wide; sinus obovate to narrowly hippocrepiform, 7–12 cm deep, 5–6 cm wide; midrib obtusely broad-flattened and concolorous above, convex below, drying concolorous above, slightly paler than surface below; primary lateral veins 5–6 pairs, arising at 45–50° angle, deeply sunken above, convex below; minor veins darker, fine, moderately distinct; basal veins 11 pairs, the 1st and 2nd pair free to the base, 5th and higher order veins coalesced 2.5–3 cm into a posterior rib. Inflorescences 1–3 per axil; peduncle 6.5–8 cm long, pale green, coarsely white-streaked near apex; spathe 13–14 cm long, 2.5 cm diam. when furled, semiglossy, tube  flattening to 10 cm wide, maroon outside, except pale green along margins, dark maroon and glossy inside, drying dark brown; blades medium green tinged purplish violet along margins outside, and throughout much of the lower half of white inner surface, the constricted area flattening to 3 cm wide; spadix 10.5–13.3 cm long; pistillate portion 5 cm long, drying 10–11 mm diam., greenish-white; staminate portion 7–8.5 cm long, drying 11–12 mm diam., cream; pistils 2.4–2.6 mm long, 2.2–2.4 mm diam., locules 3–4; style 1.2–1.5 mm diam., drying light yellow-brown, conspicuously granular, stigma 3.5–4.2 mm diam., drying blackened with a distinct depression medially; ovules 1 per locule, basal; seeds 1.7–1.2 mm long, 0.8–1 mm diam., medium-dark yellow-brown, one end with a somewhat constricted nipple.

Diagnostic Description

It is apparently a member of Philodendron subg. Philodendron sect. Macrobelium subsect. Glossophyllum series Ovata and is characterised by its sharply flattened juvenile petioles, sharply D-shaped pre-adult petioles, obtusely flattened adult petioles, broadly ovate-cordate blades which are glossy above and matte below. It differs from most species in that section by the glossy upper surface of the leaf blades. Philodendron devianum is somewhat similar to P. merenbergense (also published in this article), but it differs by having larger leaves, which are more deeply lobed and have a distinct posterior rib, and by its much larger inflorescences (spathe 13–14 cm long in P. devianum versus 5–6 cm long in P. merenbergense).

Distribution

Endemic to Colombia, known at present only from the type locality in Parque Nacional Yotoco in Valle Department at 1485–1500 m on the  eastern slopes of the Cordillera Occidental.

Distribution Map

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

  Bibliography

 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
  • C See http://kew.org/about-kew/website-information/legal-notices/index.htm You may use data on these Terms and Conditions and on further condition that: The data is not used for commercial purposes; You may copy and retain data solely for scholarly, educational or research purposes; You may not publish our data, except for small extracts provided for illustrative purposes and duly acknowledged; You acknowledge the source of the data by the words "With the permission of the Trustees of the Royal Botanic Gardens, Kew" in a position which is reasonably prominent in view of your use of the data; Any other use of data or any other content from this website may only be made with our prior written agreement.