Philodendron amargalense Croat & M.M.Mora
  • Aroideana 27: 115 (2004) 


Notes: Distribution: Colombia (Chocó)

General Description

Hemiepiphyte at 15 m; stems (1.5--)1.9--5 cm diam., medium gray-green to olive-green, drying yellowish brown and glossy to semiglossy; internodes 20--30 cm long when young, promptly becoming red-brown and scurfy, shorter than broad at maturity; cataphylls to 15 cm long on preadult plants, unribbed, reddish, persisting at lax fibers with fragments of epidermis on preadult stems, 30--39 cm long on adult plants, unribbed at apex, weakly and acutely 1-ribbed below; midrib brick reddish near base, semiglossy, yellow-green toward apex, deciduous. LEAVES on juvenile plants with petioles 42--58 cm long, 6--7 mm diam., somewhat glossy, cylindrical, finely pale-short-lineate, with a purplish ring at apex, adult petioles 55--72 cm long, 8--12 mm diam, medium to dark green, finely pale-striate, drying dark brown, prominently sulcate; geniculum 3--3.5 cm long, 9--12 mm diam; blades narrowly ovate to elliptic-ovate, narrowly long-acuminate at apex, prominently lobed at base, 65.5 cm long, 34--39 cm wide, broadest somewhat above petiole attachment, 1.6--1.9 times longer than wide; (preadult blades 40--43 cm × 17--20 cm with moderately small lobes and a V-shaped sinus), subcoriaceous, dark green and semiglossy above, moderately paler and slightly glossy below, drying dark brown above, dark yellow-brown below; anterior lobe 32--51 cm long, broadly convex on margins; posterior lobes 17.7 cm long, 11.3 cm wide midway, narrowly rounded at apex (6.5--8.5 × 5--9 cm on preadult blades); sinus spatulate to companulate, 14--15.5 cm deep, 4.5 cm wide, (V-shaped and 5--9 cm deep on preadult blades); petiolar plexus prominently elevated and rounded on upper surface; basal veins 7--9 pairs (3--5 on preadult plants), the 1st and 2nd free to the base, with the 4th or 5th and higher order pairs coalesced 3-6 cm, the posterior rib naked 1--1.5 cm (posterior rib no more than 5--7 mm long on preadult blades); midrib bluntly angular to narrowly rounded and moderately paler, yellowish green above, convex and slightly to moderately paler with inconspicuous short lines below; primary lateral veins 9--10 pair (4--6 on preadults), arising at 65--70° angle, weakly sunken and paler above, convex and concolorous below; drying darker than the surface; minor veins moderately visible, close and fine, prominulous on lower surface; posterior lobes 10--19.5 cm long, 7--14 cm wide; basal veins 4--7, 1st and/or 2nd free to the base, 3rd--4th fused 2--4 cm ; posterior rib naked 0--2 cm. INFLORESCENCES 4 per axil; peduncle 12--13 cm long somewhat flattened, 9--11 mm wide, medium green, semiglossy, maroon towards base; spathe pale yellow-green, semiglossy, 15.5 cm long, 1.8 × 2.0 cm diam, not constricted above tube, post-anthesis; spadix persisting slightly longer than spathe, heavily tinged dark maroon inside. INFRUCTESCENCE immature, dark green, 6 cm long in front, 1.5 cm diam, old staminate spadix 6.3 cm long.

Hemiepiphyte at 15 m; stems (1.5)1.9-5 cm diam., medium gray-green to olive-green, drying yellowish brown and glossy to semiglossy; internodes 20-30 cm long when young, promptly becoming redbrown and scurfy, shorter than broad at maturity; cataphylls to 15 cm long on preadult plants, unribbed, reddish, persisting as lax fibers with fragments of epidermis on preadult stems, 30-39 cm long on adult plants, unribbed at apex, weakly and acutely 1-ribbed below; midrib reddish near base, semiglossy, yellow-green toward apex, deciduous. LEAVES on juvenile plants with petioles 42-58 cm long, 6-7 mm diam., somewhat glossy, terete, finely pale-short-lineate, with a purplish ring at apex, adult petioles 55-72 cm long, 8-12 mm diam., medium to dark green, finely pale-striate, drying dark brown, prominently sulcate; geniculum 3-3.5 cm long, 9-12 mm diam.; blades narrowly ovate to elliptic-ovate, narrowly long-acuminate at apex, prominently lobed at base, ca. 65.5 cm long, 34-39 cm wide, broadest somewhat above petiole attachment, 1.6-1.9 times longer than wide; (preadult blades 40-43 cm x 17-20 cm with moderately small lobes and a V-shaped sinus), subcoriaceous, dark green and semiglossy above, moderately paler and slightly glossy below, drying dark brown above, dark yellow-brown below; anterior lobe 32-51 cm long, broadly convex on margins; posterior lobes 10-19.5 cm long, 7-14 cm wide, narrowly rounded at apex (6.5-8.5 X 5-9 cm on preadult blades); midrib bluntly angular to narrowly rounded and moderately paler, yellowish green above, convex and slightly to moderately paler with inconspicuous short lines below; primary lateral veins 9-10 pair (4-6 on preadults), arising at 65-70° angle, weakly sunken and paler above, convex and concolorous below; drying darker than the surface; minor veins moderately visible, close and fine, prominulous on lower surface; basal veins 7-9 pairs (3-5 on preadult plants), the 1st and 2nd free to the base, with the 4th or 5th and higher order pairs coalesced 3-6 cm, the posterior rib naked 1-1.5 cm (posterior rib no more than 5-7 mm long on preadult blades); INFLORESCENCES 4 per axil; peduncle 12-13 cm long, somewhat flattened, 9-11 mm wide, medium green, semiglossy, maroon towards base; spathe pale yellow-green, semiglossy, 15.5 cm long, 1.8 x 2.0 cm diam., not constricted above tube, post-anthesis; spadix persisting slightly longer than spathe. INFRUCTESCENCE immature, dark green, 6 cm long in front, 1.5 cm diam., old staminate spadix 6.3 cm long.

Diagnostic Description

characterized by its short adult internodes, unribbed, reddish, usually deciduous cataphylls, cylindrical petioles with a purple ring at the apex and a prominently raised petiolar plexus, the narrowly ovate to elliptic-ovate blades which dry dark yellow-brown with minutely prominent cross-veins usually visible on the lower dried surface. Also characteristic is the unconstricted spathe that is heavily tinged maroon inside and the narrowly raised pale green midrib and the prominently raised petiolar plexus. This species is closely related to Philodendron sagittifolium Liebm., but it differs from that species in having proportionately longer peduncles which are about as long as the spathe (versus much shorter in P. sagittifolium).

Distribution

The species is known only from the region of Cabo Corrientes, Colombia, and is somewhat common in the forest at the El Amargal field station.

The species is endemic to Colombia in Choco Department, known only from the region of Cabo Corrientes and is somewhat common in the forest at the EI Amargal field station.

Distribution Map

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

  Bibliography

  • 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 Mora, M. Las Aráceas de Cabo Corrientes, Costa Pacífica del Chocó, Colombia. Undergraduate Thesis. (2002).
  • 3 Croat, T.B. & Mora, M.M. New Taxa of Araceae from Cabo Corrlentes in Choco Department of Colombia. Aroideana; Journal of the International Aroid Society 27, 130 (2004).

 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
Global Biodiversity Information Facility
http://data.gbif.org
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eMonocot
http://e-monocot.org
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
  • C 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
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