Araceae
Philodendron

Philodendron tortum M.L.Soares & Mayo

First published in Feddes Repert. 112: 42 (2001)
This species is accepted
The native range of this species is N. Brazil to Bolivia. It is a climber and grows primarily in the wet tropical biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: threatened. Confidence: low confidence
[AERP]

CATE Araceae, 17 Dec 2011. araceae.e-monocot.org

General Description
Root-climbing, herbaceous liana with roots 0.3 - 0.5 cm diam. Internodes up to 7 cm long, 2.6 - 2.7 cm diam., strongly angled, grey-green, semi-glossy, relatively shorter in flowering portion of stem. LEAVES: prophyll 8 - 14 cm long, 2-keeled, dark green, with paler striae, strongly twisted or even spiralled, caducous; petiole 30 - 63.5 x 0.8 - 2.0 cm diam., dark green with fine dark purplish striae, semi-spongy, adaxial surface slightly sulcate with rounded margins, abaxial surface rounded, extrafloral nectaries purplish near the apex; leaf blade deeply pinnatifid, adaxial surface glossy dark green with sulcate midrib, abaxial surface pale green with midrib and primary lateral veins prominent and paler than the lamina; anterior division 39 - 62.5 x 50 - 61.5 cm, primary lateral lobes 9 - 10 on each side, each 2 - 4 cm wide halfway along its length, with a single primary lateral vein, apex somewhat acuminate, separated by sinuses (1.5) 2 - 3 (5.0) cm wide at base; posterior divisions weakly developed, represented by the basal pinna on either side, each 4 - 5.5 x 22 - 29 cm, apex somewhat curved towards leaf apex and with 2 basiscopic lobes, the proximal one less well developed. INFLORESCENCE: 2 - 5 (-6) in each floral sympodium; peduncle 9 - 21 x 0.3 - 0.4 cm, subcylindric; spathe 10.5 cm long, constricted; tube 3 - 5.5 cm long x 2.0 - 2.5 cm diam., externally pale green with darker striae when immature, when mature green with reddish spots, internally purplish red; blade 2.5 - 5 x 1.5 - 1.8 cm, pale green on both sides, excretory resin canals lacking; spadix 8.8 cm long, subsessile, slightly decurrent; female zone 4 x 1.5 cm, cream coloured; intermediate sterile male zone 0.8 - 1.2 cm; fertile male zone 4 - 0.8 cm. Flowers: stamens 3 - 4 per flower, 1.25 - 1.5 x c. 0.65 mm, thickening towards the apex; gynoecium 2.25 - 2.5 mm long with raphides present throughout its length; ovary 1.25 - 1.75 x c. 0.75 mm; locules 6 - 7 per ovary, filled with translucent mucilaginous contents; ovules 3 per locule, c. 0.2 mm long, hemianatropous, with few trichomes at the funicle base; placentation axile, ovules inserted a little below the centre of the ovary; style c. 0.5 - 0.75 x 1.0 mm; stigma 0.5 - 0.6 mm broad, discoid. INFRUCTESCENCE not seen.
Distribution
Brazil (Amazonas).
Habitat
Root-climber always above 2m on tree boles; in the Ducke Forest Reserve in humid forest ("mata de baixio", "floresta de platô").
[CATE]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • 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, 17 Dec 2011.
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0