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This species is accepted, and its native range is N. South America to N. Brazil.
A specimen from Kew's Herbarium

[CATE]

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

General Description
Stem abbreviated. LEAVES: Petiole robust, somewhat flattened on the upper surface, and rather deeply canaliculated, 28-35 cm long, 1.5-2 cm thick at the base, somewhat attenuating upwards, the lower ? or 1/4 narrowly sheathed; Blade rigid, thickly coriaceous, rather glossy above, lanceolate or oblong-lanceolate, apex shortly oblique, cuspidate-acuminate, gradually narrowing towards the base, the extreme base somewhat obtuse, 30-50 cm long, 12-16 cm wide. Lateral veins all subequal, very numerous and very dense, departing the midrib (which is 6-9 mm wide, narrowing upwards) at an obtuse or very obtuse angle, arcuate-ascending towards the margin, distinctly prominent on both sides. INFLORESCENCE: Peduncle terete, moderately robust, 8-10 cm long, 8 mm thick. Spathe externally white or green towards the base, internally pale purplish, tube broadly ovoid, 3.5 cm long and almost equal-sided, blade ovate-oblong, apex shortly apiculate, 4.5-5 cm long, 4 cm wide. Spadix subtended by a 6-8 mm long stipe, female zone cylindric, 1.5-2 cm long, 1 cm thick, male zone claviform, apex obtuse, 5-6 cm long, equally thick as the lower, female zone or somewhat thicker, narrowing upwards. Pistil ovoid-oblong, stigma small round-raised, ca. 2 mm long, 1.5 mm thick, many locules [Mayo observed 2 locules], locules with few ovules. Male flowers 2-4 androus.

Native to:

Brazil North, French Guiana, Guyana, Venezuela

Philodendron callosum K.Krause appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Nov 4, 2004 Haigh, A.L. [15], French Guiana K000099746
May 7, 1900 s.coll. [s.n.], Guyana K000400253 Unknown type material
Edwards, P.J. [K.E.R. 242], Guyana 29047.473

First published in H.G.A.Engler (ed.), Pflanzenr., IV, 23Db: 28 (1913)

Accepted by

  • 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.
  • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.

Literature

CATE Araceae

  • Krause, K. 1913. Araceae-Philodendroideae-Philodendreae-Philodendrinae. Das Pflanzenreich. 60 (IV.23Db): 1-143

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 Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0