Philodendron tenuispadix E.G.Gonç.
  • Aroideana 25: 19 (2002 publ. 2003) 


Notes: Distribution: Brazil (Espírito Santo)

General Description

Hemi-epiphytic scandent vine, occasionaly terrestrial. Stem: ochre, internodes 3-4 cm long. LEAVES: Prophyll 28-30 x 2-3 cm, narrowly triangular, green with vinaceous nectaries at the base. Petiole 43-60 cm long. Leaf blade 51-59 x 24-27 cm, ovate to ovate triangular, apex acuminate, base sagittate-cordate, distinctly paler on lower surface, chartaceous to subcoriaceous; anterior division 36-42 x 24-27 cm, primary lateral veins 6-8 per side; posterior divisions 13-17 x 11-13 cm, acroscopic veins 2-3, basioscopic vein 1 per side; basal vein and posterior rib information lacking. IFLORESCENCE: 1-3 per floral sympodium, peduncle 3-4 cm long. Spathe 15-23 x 3-4 cm, narrowly ovate, weakly constricted, never closing apically after anthesis (Gonçalves 2002), green with small red nectaries outside, white inside. Spadix 14-20 cm long, male zone 5-12 cm long, cream; intermediate male sterile zone 1.5-2.5 cm long, cream; apical male sterile zone 3-4.5 cm long, very narrow at the end, cream; female zone 3.5-4 cm long, greenish. Flowers: stamens 2-2.5 x 2-2.3 mm; apical staminodes 2 x 1.5 mm; intermediate staminodes 3 x 1.3 mm; gynoecium 3 x 2.5 mm, cilindrical to obovoid, ovary with 10-11-locular, ovules 2-3 per locule, placentation sub-basal. INFRUCTESCENCE: Berries 2-4 x 2 mm, greenish.

Herbs scandent to hemiepiphytes, occasionally terrestrial. Stem creeping to decumbent, internodes 3-4. cm long, 3-4.3 cm diam., turning ochre, intravaginal squamules deciduous, small. Leaves 5-7 per plant; prophylls deciduous, 28-30 x 2-3 cm with small red nectaries at base; petioles 43-60 cm long, 0.5-0.8 cm diam. at apex, slightly flattened adaxially; leaf blade sagittate-cordate, 51-59 cm long, 24-27 cm wide, dark glossy green above, light glossy green below, drying brown; anterior division 36-42 X 24-27 cm, primary lateral veins 6-8 per side, arising at an angle of 60-70°; discolorous adaxially, clearer thart the leaf blade, concolorous abaxially, apex acuminate; posterior divisions 13-17 x 22-26 cm, acroscopic veins 3-4, basioscopic veins 2-3, basioscopic area of leaf blade well developed, usually overlapping in living plants, basal veins naked for 3-4 cm. Inflorescences 1-3 per axil; peduncles 3-4 x 0.6-0.8 cm; spathe green outside with small red nectaries, white within, very slightly constricted at middle, 15-23 cm long, 3-4.5 cm wide, apex shortly acuminate, never closing apically after anthesis; spadix 14-20 cm long, tapering to the apex, sterile apical appendix 3-4.5 x 0.4-0.5 cm, fertile male portion 5-12 x 0.6-0.8 cm, sterile male intermediate portion 1.5-2.5 x 1-1.2 cm, female portion cylindrical 3.5-4 x 1 cm, adnate to spathe for its basal third. Flowers: stamens 3-androus, subprismatic, 2-2.5 x 2-2.3 mm; staminodes prismatic, intermediate 3 x 1.3 mm, apical 2 X 1.5 mm; gynoecium 3 mm long, stigma rounded, almost as wide as the ovary, 1.5 mm diam.; style inconspicuous; ovary cylindrical to obovoid, 1.5-2 mm diam., 10-11 locular, locules 2-3 ovulate, ovules basally attached, funicles longer than the ovules. Infructescence: berries prismatic, greenish, 2-4 X 2 mm.

Habitat

Hemi-epiphytic in Atlantic forest.

Distribution

So far known only from Espírito Santo state, Brazil.

Philodendron tenuispadix is so far known from Espirito Santo State, in forests between 400-600 m. It can be recognized by its slender spadix with a long apical portion with sterile flowers and for the non-constricted spathe that never closes completely after anthesis.

Conservation

Critically Endangered (CR), B1, a, b (i, iii); extent of occurence < 100 km 2, this species occurs in two populations in Espírito Santo, in a region where the destruction of the original vegetation is comprehensive. One population is protected within the Reserva Biológica Santa Lúcia, and specimens are cultivated at Sítio Roberto Burle-Marx, in Rio de Janeiro.

Distribution Map

 
  • Native distribution
Found in
  • Southern America Brazil Brazil Southeast

  Bibliography

  • 1 Giulietti & al. (2009). Plantas raras do Brasil: 1-496. Conservação International, Belo Horizonte, MG.
  • 2 Sakuragui, C.M., Mayo, S.J. & Zappi, D.C. (2005). Taxonomic revision of Brazilian species of Philodendron. Kew Bulletin 60: 465-513.
  • 3 Govaerts, R. (2004). World Checklist of Monocotyledons Database in ACCESS: 1-54382. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • 4 Sakuragui, C.M., Mayo, S.Joseph & Zappi, D.C. Taxonomic revision of Brazilian species of Philodendron section Macrobelium Kew Bull. 60, (2005).
  • 5 Gonçalves, E.G. New Aroid taxa from Brazil. Aroideana 25, 35 (2002).

 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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