Philodendron hopkinsianum M.L.Soares & Mayo
  • Feddes Repert. 112: 40 (2001) 


Notes: Distribution: N. Brazil

General Description

Root-climbing, herbaceous liana, flowering portion of shoot with short internodes, forming a leaf rosette, alternating with non-flowering portion having internodes 8.0 - 14.0 x 1.0 - 1.2 cm. Juvenile plant : leaf blades pendent and clearly appressed to the host tree bole, adaxial surface dull, dark green, subtly variegated by slightly paler areas between the primary lateral veins, which disappear in succeeding more mature leaves, primary venation impressed, abaxial surface paler and glossy. LEAVES: prophyll marcescent, forming a persistent, ferrugineous to straw-coloured fibrous mass surrounding the petiole base and inflorescences; petiole 40.0 - 43.5 x 0.5 - 1.0 cm, pale green with dark spots throughout its length, adaxial surface broadly sulcate with keeled margins, abaxial surface rounded; leaf blade subsagittate, always pendent, subcoriaceous, apex acuminate, adaxial surface glossy dark green in life, pale green when dried, abaxial surface dull and paler green, extrafloral nectaries present but not pigmented, primary and interprimary venation impressed adaxially, similarly coloured to blade on both surfaces; anterior division 27.0 - 35.0 x 19.0 - 25.5 cm, primary lateral veins 3 - 6 on each side; posterior divisions 5.0 - 8.0 x 10.0 - 13.0 cm, slightly asymmetric, acroscopic and basiscopic veins lacking. INFLORESCENCE: 2 - 3 in each floral sympodium; peduncle 3.0 - 11.0 x 0.5 - 1.0 cm, distinctly thickened apically, cream-coloured with paler striations; spathe 9.0 - 11.7 cm long, constricted; tube 4.0 - 4.5 cm long x 1.1 - 2.4 cm diam., externally cream-carmine, internally rose-cream; blade 5.0 - 7.2 diam. long x 1.1 - 1.4 cm diam., externally very pale green with reddish extrafloral nectaries, internally cream without resin canals, apex acuminate; spadix 10.1 cm long, subsessile, slightly decurrent basally; female zone 2.2 x 2.0 cm, somewhat flattened; intermediate sterile male zone 1.6 x 1.7 cm, subcylindric and slightly narrowed apically, pale yellow; fertile male zone 6.3 x 1.5 cm, somewhat flattened. Flowers: stamens 4 - 6 per flower, 1.6 x 0.8 mm; staminodes 2.0 x 2.5 mm; gynoecium 2.3 - 2.5 mm long; ovary 2.0 x 1.8 mm; locules 5 - 7 per ovary, filled with translucid mucilaginous contents; ovules 36 - 80 per locule, hemianatropous; placentation axile; style 0.5 mm long; stigma 2 mm broad, discoid, lobed. INFRUCTESCENCE: c. 8.0 cm long; berry 0.5 - 0.9 x 0.3 - 0.5 cm, intensely vermilion, elongated-cylindric to subglobose, pericarp with oily contents; seed 1.25 x 0.25 mm.

Habitat

Root-climber on tree boles; in the Ducke Forest Reserve found in humid forest ("Floresta de platô"), commoner in clearings and forest areas with higher light levels.

Distribution

Brazil: Amapá, Amazonas, Roraima.

Distribution Map

 
  • Native distribution
Found in
  • Southern America Brazil Brazil North

  Bibliography

  • 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 Mayo, S.Joseph & Soares, Mde Lourdes Three new species of Philodendron (Araceae) from the Ducke Forest Reserve, central Amazonas, Brazil. Feddes Repertorium. 112(1-2), (2001).

 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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eMonocot
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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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