Philodendron hooveri Croat & Grayum
  • Syst. Bot. Monogr. 47: 111 (1996) 

Notes: Distribution: Ecuador

General Description

Scandent, subshrubby epiphytic vine climbing to at least 2 m above ground (three collections describe the habit as terrestrial). Internodes 1.1-10.2 cm long, 0.3-0.5 cm wide, drying green and finely sulcate, the epidermis tessellate; roots present but few at distal nodes, to ca, 2.0 mm in diameter. LEAVES: Petiole (7.6-) 8.9-15.9 (-17.5) cm long, P/L=(0.48-) 0.55-0.90, sheathed 71-90+ %, the sheath erect to probably involute, scarious-margined, the free portion prolonged by ca. 1.0-1.5 mm; unsheathed portion of petiole (0.2-) 2.0-4.1 (-4.8) cm long. Lamina (14.2-) 18.4-24.7 cm long, (5.4-) 6.1-11.4 (-13.6) cm wide, L/W= 1.73-2.86 (-3.52), IQI=5-10 (-12), ± broadly ovate to elliptical or somewhat obovate (widest from below to slightly above the middle), ± abruptly to gradually moderately to some- what long-acuminate apically (the acumen ca. 0.8-2,0 cm long), cuneate to truncate basally; midrib not described; primary lateral veins 10-13 per side, 0.2-2.2 (-3.1) cm apart, with interprimaries usually evident; abaxial laminar surface drying moderately to densely and evenly somewhat asperous-granular (especially along the veins) or occasionally ± alveolate, with the reticulate veins visible toward the margin; white stitching not evident to obscure and very widely scattered; resin canals visible flanking lateral veins; adaxial surface moderately granular or weakly to moderately alveolate, with reticulate veins not obvious; white stitching not evident; resin canals not evident. INFLORESCENCES solitary or paired; cataphylls often present, 1.9-7.1 cm long, 0.3-0.6 cm wide, narrowly lanceolate; peduncle (2.0-) 3.6-6.0 cm long, P/S=(0.24-) 0.33-0.70 (-0.93) ; spathe at anthesis 6.5-11.0 cm long, 1.1-2.1 cm wide, externally glossy, pale green to green, yellowish green to white distally, internally green proximally; spathe drying moderately to densely granular or verrucate-granular with resin canals not visible externally, with some stitching especially toward margins, internally moderately low-granular or granular (or coarsely granular toward base) and loosely reticulate-veined, with scattered concolorous stitching, with longitudinal secretory striations apparently confined to basal 1/7-2/5; acumen of spathe 0.3-1.3 cm long. Stipe of spadix 0.2-1.0 cm long; spadix 5.7-9.0 (-11.1) cm long, the fertile male portion 0.35-0.50 cm wide, cream- colored or white; apical sterile male zone 1.9-2.8 cm long, somewhat broadened relative to the subtending fertile region; intermediate sterile male zone 0.2-0.6 cm long; fertile female portion of spadix (1.1-) 1.6-2.6 cm long, F/S=0.15-0.30 (-0.36+), 0.45-0.75 (-0.95) cm wide, green; fertile male flowers 0.6-0.9 mm long, 0.5-1.1 mm wide, irregularly polygonal, columnar; apical sterile male flowers 0.6- 1.0 mm long, 0.7-2.7 mm wide, rhomboidal or irregularly polygonal to elongate; intermediate sterile male flowers 1.0-1.2 mm long, 1.0-1.6 mm wide, mushroom- shaped; female flowers 1.1-1.7 mm long, 0.6-1.2 mm wide, the stylar canals 4-5. INFRUCTESCENCES: Ripe fruits not described. Mature seeds not seen; immature seeds strongly curved, somewhat C-shaped.


Principally in Tropical Moist Forest and Premontane Wet Forest life zones, but also ranging into Tropical Wet Forest.


Apparently endemic to northern coastal Ecuador.

Distribution Map

  • Native distribution
Found in
  • Southern America Western South America Ecuador


  • 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 Grayum, M.Howard Revision of Philodendron subgenus Pteromischum (Araceae) for Pacific and Caribbean Tropical America. Systematic Botany Monographs. 47, (1996).

 Information From

CATE Araceae
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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World Checklist of Selected Plant Families
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