Philodendron heterocraspedon Croat & D.C.Bay
  • Novon 18: 438 (2008) 


Notes: Distribution: Colombia

General Description

Usually hemiepiphytic, occasionally terrestrial; stem appressed-climbing or scandent; internodes short, semiglossy, 1–13 x 1.5–5 cm, longer than broad, dark green, drying dark reddish brown or dark tan, epidermis coarsely white-ridged becoming brown scurfy ridged and finely transversely fissured, drying longitudinally wrinkled; roots few per node, drying medium brown; cataphylls D-shaped, 6–29 cm, sharply 1- to 2-ribbed, medium green, sometimes red, drying dark reddish brown, persisting intact at base. LEAVES reflexed-spreading to pendent, mostly clustered at apex of stem; petioles 12–49 cm x 1.5– 5 mm (dry), C-shaped in cross section, broadly sulcate at base with one margin sharply acute and the other bluntly rounded, becoming narrowly flattened at apex, dark green, finely striate, drying dark brown; geniculum terete, swollen, 1–2 cm, drying dark and slightly scurfy; blades oblong-elliptic, subcoriaceous, moderately bicolorous, long-acuminate at apex, truncate to obtuse or sometimes slightly cordulate at base, 38–79 x 6–16 cm, 4.5–6.5(–8.9)x longer than wide, 1.4–2.4(–3.1)x longer than petiole, adaxial surface semiglossy to velvety, dark green, drying dull dark reddish brown, abaxial surface semiglossy, paler, drying glossy and paler; midrib convex and paler adaxially, bluntly acute and darker abaxially, drying concolorous or lighter adaxially, darker and raised abaxially; primary lateral veins 19 to 47 per side, 18– 20 mm apart, spreading from midrib at 45º angles near the base becoming more acute distally (to 20º– 25º), down-turned at midrib then curving gradually out to margin, narrowly sunken adaxially, convex and darker than blade abaxially, drying concolorous or paler than blade adaxially, darker than blade and raised abaxially; basal veins 1 to 3 pairs per side, all free to base; interprimary veins often nearly as prominent as primary lateral veins; minor veins obscurely visible. INFLORESCENCE erect, 1 to 5 per axil; peduncle 2.5– 7 cm x 4–6 mm, much shorter than petiole, white to medium green, finely striate, drying dark brown; spathe 16–22 cm, matte to weakly glossy, pale green to greenish white outside, long-tapered, not constricted; spathe blade 7–10 cm, greenish white inside; spathe tube 8–10 cm, glossy, cherry-red to red-violet to magenta inside; spadix cylindrical, 11–15 cm; pistillate portion pale green, cylindrical, 3.3–4 cm long on one side, 5.5–8 cm long on the other side, 7–9 mm diam.; staminate portion cylindrical, pale green, 7–10.2 cm x 7–8 mm; sterile staminate portion not apparent; pistils ca. 1.6x1.6–1.8 mm; ovary 7- to 9-locular, ovules with subbasal placentation, 5 to 8 per locule. INFRUCTESCENCE unknown.

Diagnostic Description

The species is a member of subgenus Philodendron, section Philodendron, subsection Philodendron, series Fibrosa Croat and is characterized by its habit of growth, usually with most of the leaves clustered near the top of the stem, and long pendent leaf blades that have many arching primary lateral veins, markedly sunken adaxially. In addition, the petioles are deeply sulcate with one margin very acute and the other bluntly rounded (hence the epithet from the Greek compound ‘‘hetero’’ for differing and ‘‘craspedon’’ meaning edge or border). The distinctive long-tapered inflorescences are erect and nearly sessile, pale green or white. This species is most easily confused with Philodendron rhodospathiphyllum Croat & D. C. Bay, especially in the dried state. However, P. rhodospathiphyllum differs in having shorter, wider leaf blades held in a spreading or slightly reflexed position and not pendent. It also has primary lateral veins that are farther apart and curve more gradually, and smaller inflorescences that are green outside and inside.

Habitat

Tropical rain forest transition to Premontane (T-rf/P), from 50 to 270 m. It has been collected from areas of regrowth forest, primary forest, and steep forested road banks.

Distribution

Endemic to Colombia and known only from the western slopes of the Colombian Cordillera Occidental, Valle Department, within the Bajo Calima region, and along the old Buenaventura–Cali rd. near the Río Aguaclara.

Conservation

IUCN Red List category. Conservation for Philodendron heterocraspedon must be considered as Near Threatened (NT) according to IUCN Red List criteria (IUCN, 2001). Although locally common in the area of the type locality, it is not yet known from other sites in Colombia.

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 Croat, T.B., Bay, D.C. & Yates, E.D. New Species of Philodendron (Araceae) from Bajo Calima, Colombia. Novon; a Journal for Botanical Nomenclature. St. Louis, MO 18, 452 (2008).

 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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