Philodendron platypetiolatum Madison
  • Selbyana 2: 22 (1977) 


Notes: Distribution: Nicaragua to Ecuador

General Description

Hemiepiphytic; stem more or less scandent, loosely appressed-climbing, to 3 m long, semiglossy, sap clear, watery, sticky, leaf scars to 2 cm wide; internodes slender, 14--20 cm long, 1--2 cm diam., longer than broad, sometimes somewhat flattened on side above, semiglossy, green to grayish green, epidermis drying tannish brown, cracking, loosening and flaking; roots pale to brownish, less than 20 cm long, thin, 2 mm diam., smooth; cataphylls (6)10--17 cm long, sharply 2-ribbed, sharply and deeply sulcate with margins flared, pale to medium green, drying yellowish to olive-green, deciduous. LEAVES: petioles 15.5--56 cm long, 3--9(12) mm diam., broadly flattened to markedly flattened and turned slightly upward adaxially, broadly convex abaxially, firm, medium to dark green, surface more or less unmarked; blades ovate-triangular to broadly ovate, subcoriaceous, semiglossy to glossy, weakly to moderately bicolorous, acuminate, sometimes long, narrowly acuminate at apex (the acumen tightly inrolled, 2--3 mm long), weakly cordate at base, 17--39 cm long, 12.7--29 cm wide (1--1.5 times longer than wide), (0.6--1.4 times longer than petiole), usually about equal in length to petiole; anterior lobe 15--34 cm long, 13--29 cm wide (2.4--4.5(5.2--5.4) times longer than posterior lobes); posterior lobes 4--10 cm long, 5--12 cm wide, broadly rounded to obtuse; sinus hippocrepiform, rarely arcuate with blade decurrent on petiole; midrib sunken or flat to broadly convex above, slightly paler than surface to concolorous above, bluntly low-triangular to convex below, paler than surface below; basal veins (2)3--4(5) per side, with 0--1 free to base, second and third coalesced 1--2 cm; posterior rib naked for 0--1 cm; primary lateral veins 3--5 per side, departing midrib at a 50--60º angle, straight to the margins, sunken to weakly sunken above, convex below; minor veins moderately indistinct, arising from both the midrib and primary lateral veins. INFLORESCENCES 1(2) per axil; peduncle 5--20 cm long, 2--11 mm diam., subterete or bluntly 1--2-angled, pale green, semiglossy, unmarked; spathe semiglossy, (8)11--18 cm long (0.7--2(2.8) times longer than peduncle); spathe blade green or red outside, pale yellow-green (dark red in So. America), inside; spathe tube green to olive-green, usually tinged red or maroon outside, 4.5--7.5 cm long, tinged red or maroon inside; spadix sessile; weakly tapered, more or less acute at apex, 8--9.8 cm long, broadest at the base or more or less uniform throughout, constricted weakly between sterile and fertile staminate portions; pistillate portion pale greenish, cylindrical or weakly tapered toward the apex, 2.5(3.5) cm long, 9--11 mm diam. at apex, 10--13 mm diam. at middle, 10--13 mm wide at base; staminate portion 5.7--7.3 cm long; fertile staminate portion white, weakly tapered or cylindrical, 5--7 mm diam. at base, 4--5 mm diam. ca. 1 cm from apex, broadest at the base or more or less uniform, narrower than the pistillate portion, broader than or as broad as the sterile portion; sterile staminate portion as broad as or slightly narrower than the pistillate portion, 5--10 mm diam.; pistils (0.8)1.7--2.5 mm long, (0.6)0.9--1.4 mm diam., white; ovary (6)7--8-locular, (0.7)1.1--1.8 mm long, 0.8--1.2 mm diam., with sub-basal placentation; locules 0.7--1.5 mm long, 0.3 mm diam., ovule sac 0.8 mm long; ovules 3 per locule, 1-seriate, contained within translucent to transparent, gelatinous envelope, (0.2--0.3)0.4--0.5 mm long, longer than funicle; funicle 0.2--0.3 mm long, (can be pulled free to base), style (0.1)0.4--0.7 mm long, 0.6--0.8 mm diam., similar to style type B; style apex steeply sloping, sometimes with small medial depression; stigma subdiscoid to hemispheroid, somewhat cupullate, 0.7--0.9(1.3) mm diam., 0.2--0.3 mm high, covering entire style apex; the androecium prismatic, truncate, oblong, margins irregularly 4--6-sided, sometimes weakly scalloped; thecae cylindrical to oblong, 0.3--0.4 mm wide, more or less parallel to one another, sometimes more or less contiguous; sterile staminate flowers irregularly 4--6-sided or rounded, 0.9--1.5 mm long, 0.7--1.2 mm wide. INFRUCTESCENCE turning red outside; berries green (immature).

Habitat

Premontane wet forest, Tropical wet forest transition to Premontane wet forest, and Tropical wet forest life zones.

Distribution

Ranges from Nicaragua to Ecuador. This species has been collected at several localities in Chocó and Valle Departments; in Ecuador, it has only been collected at and near the type locality.

Distribution Map

 
  • Native distribution
Specimens
Found in
  • Southern America Central America Costa Rica
  • Nicaragua
  • Panamá
  • Western South America Colombia
  • Ecuador

  Bibliography

  • 1 Hammel, B.E. & al. (2003). Manual de Plantas de Costa Rica 2: 1-694. Missouri Botanical Garden Press, St. Louis.
  • 2 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.
  • 3 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.
  • 4 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
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.
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Global Biodiversity Information Facility
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eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
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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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