Philodendron tachirense G.S.Bunting
  • Phytologia 60: 330 (1986) 


Notes: Distribution: Venezuela (Táchira)

General Description

Scandent herb. Stem up to 4 m long, 2.4 cm in diameter, internodes (2-)3-5 cm long, naked. Cataphyll 16-17.5 cm long, caducous. LEAVES: Petiole thick (swollen in juvenile plants), subterete, nevertheless rather flat adaxially near the apex, 22-31 cm long, 1.7 cm wide (halfway) sheathing part 2.2-5.8 cm long. Leaf blade flat, subcoriaceous (or rather thickly papery when dry) unequally sided, broadly ovate, 30-35 cm long, 22-29 cm wide; obliquely cordate or subcordate at the base; posterior lobes rounded, separated by a short 2-5 cm long sinus; broadly obtuse at the apex (125-130º), the apex itself abruptly acuminate (0.4-1 cm); adaxially deep green, glaucescent or semiglossy; midrib almost flat and 1.4 cm wide near the base, convex further up; primary lateral veins sulcate, 7 on both sides, emerging at an angle of ca. 70-75º; abaxially midrib broadly convex, primary lateral veins convex. INFLORESCENCES in fours or fives. Peduncle 6-10 cm long. Spathe lacking constriction, the same diameter throughout, 7-7.5 cm long, 0.7-0.8 cm in diameter; the lower half green externally, cherry red internally; the upper half both surfaces white; eventually up to 9.2 cm long, 1.1 diameter in the lower part, 0.9 cm further up. Spadix somewhat shorter than the spathe, stipitate, stipe 0.1-0.3 cm long at the back, 0.3-0.6 cm long at the front; female zone 2.1-3 x 0.65 cm; sterile male zone 0.5-0.6 x 0.45 cm; [male] fertile zone 3.3 x 0.55 cm. Pistillate flowers ovary 5-locular, locules uniovulate. Staminate flowers constantly 3-androus.

Diagnostic Description

The species is recognized by its scandent habit, caducous, unribbed cataphyll, moderately spongy, more or less terete petioles, its ovate, inequi-laterally ovate, subcordate to cordate blades with a triangular sinus which is broader than deep and with the posterior rib not naked. Also characteristic are the inflorescences which occur in clusters of 4-5 per axil, have uncon-stricted spathes with the tubes green outside, maroon within and with the blades white on both surfaces.

Habitat

Premontane wet forest life zones.

Distribution

Endemic to Venezuela, known at present only from Tachira (but to be expected in adjacent Merida). All known collections were made east of San Cristobal, between San Cristobal and La Florida as well as in the area between La Fundacion and Pregonero.

Distribution Map

 
  • Native distribution
Found in
  • Southern America Northern South America Venezuela

  Bibliography

  • 1 Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
  • 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 Bunting, G.S."" New taxa of Venezuelan Araceae. Phytologia. 60 (5), (1986).
  • 4 Croat, T.Bernard & Lambert, N." The Araceae of Venezuela. Aroideana. 9 (1-4), (1986).

 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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