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This species is accepted, and its native range is Costa Rica to NW. Colombia.


Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá.

Nativa en Colombia; Alt. 100 m.; Pacífico.
Morphology General Habit
No Evaluada


CATE Araceae, 17 Dec 2011.

General Description
Stout herb, 1-1.5 m tall; stems erect at apical part, the older portion reclining for up to 1.5 m; internodes 2.5-8.5 cm long, 2-3.5(-10) cm diam., (lark green, glossy, variegated with cream-yellow or pale green (sometimes medium green with dark green lines as in Croat & Grayum 601409); petioles (24-)30-59 cm long (averaging 39 cm long), sheathed from 0.3 to 0.55 their length (averaging 0.42), matte, dark olive-green to deep brown, streaked or tinged with cream-white in lower half, especially near the base, subterete; sheath 19-29 cm long, usually decurrent at apex, sometimes weak]y free-ending (as in Groat & Grayum 60149); unsheathed portion 13-28.5 cm long, weakly sulcate adaxially, weakly flattened toward the apex, sometimes slightly white adaxially and continuing white onto lower midrib, blades narrowly ovate to oblongovate (22)30-54 x 10-32 cm (averaging 36 x 18 cm), 1.5-2.6 times longer than wide (averaging 1.9), ranging from 0.6 as long as petioles to 1.4 times longer than petioles, but averaging about as long as petioles, slightly inequilateral, one side 1-1.5 cm wider than the other, acuminate to abruptly acuminate at apex, inequilaterally subcordate (sinus to 3.5 cm deep) or rarely inequilaterally rounded at base (sometimes one side weakly subcordate, the other side rounded), subcoriaceous, drying thin, slightly concolorous to slightly bi-colorous, upper surface usually glossy to semiglossy, dark green, to weakly mottled cream, drying dark olive-green, plain (unvariegated) to usually conspicuously mottled yellow-cream; lower surface semiglossy to nearly matte, slightly paler, drying yellowish green, midrib flat to weakly flat-raised or broadly convex (sometimes broadly sunken at base, broadly flat-raised and striate toward apex) slightly paler and dark green-spotted to concolorous above, convex to narrowly rounded and white or narrowly acute and paler below; primary lateral veins 13 to 18 (to 22) per side, gradually arising at a steep angle from the midrib, then spreading in a broad curve at 55°-80° angle, (those near the apex to 25° angle, those near the base sometimes 90°-110° angle and sometimes forming a sigmoid curve), deeply sunken above, convex below, forming a series of weakly developed collective veins that eventually merge with the margin; at least the midrib and primary lateral veins sometimes minutely farinose-granular; minor veins moderately obscure below. INFLORESCENCE 1 to 3 per axil, sometimes subtended by a reduced leaf with a fully sheathed petiole (the sheath emarginate at apex) and a reduced leaf blade, 12-15 x 3.5-6.5 cm; peduncle 8-12 cm long, drying 2-3 mm diam.; spathe 16.5-23.5 cm long, 3-4 cm longer than the spadix, 4.0-5.0 cm wide at base, to 2.5-3.5 cm wide at constriction, 2.5-3 cm wide on blade (to 7 cm wide when flattened), uniformly light green to medium green on both surfaces, weakly glossy throughout outside, somewhat glossier within; spadix 15-27 cm long; free portion 7-13 cm long; pistillate portion 8.0- 9.3 cm long, drying 7-1cm wide; staminate portion 5-6.5 cm long, white, tapered toward apex and tapered slightly toward the base; the staminate and pistillate portions sperated by an almost sterile intermeliate segment 2-2.5 cm long with a few seattered pistils in the lower half and a few scattered staminodia in upper half, pistils 115 to 160, densely aggl regated, separated from one another by 0.5 to 2.5 times their width, irregularly scattered with roughly 4 to 5 covering the width of the spadix; ovaries pale lemon-yellow, depressed-globose, 1.8- 2 mm wide; staminodia white, 3 to 5 per pistil, free or briefly united at base, 1.5-2.2 mm long; synandria 1.2-1.6 mm diam., irregularly angled with rounded margins. INFRUCTESCENCES to 27 cm long, with fruiting portion 10-14 cm long; herries red-orange, subglobose, ovoid to ellipsoid, 5-7 mm diam.
Grayum (pers. comm.) reports the species to occur mostly in light gaps and disturbed areas in primary forest at the La Selva Reserve in Costa Rica.
Insert Content Hereflowering occurs in D. grayumiana from January to June, rarely as early as November. Fruiting collections have been seen only from May to September.
Dieffenbachia grayumiana ranges along the Atlantic slope from north- western Costa Rica to western Panama.

Native to:

Colombia, Costa Rica, Panamá

Dieffenbachia grayumiana Croat appears in other Kew resources:

First published in Novon 9: 494 (1999 publ. 2000)

Accepted by

  • Croat, T. (2004). Revision of Dieffenbachia (Araceae) of Mexico, Central America, and the West Indies Annals of the Missouri Botanical Garden 91: 668-772.
  • 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.
  • Hammel, B.E. & al. (2003). Manual de Plantas de Costa Rica 2: 1-694. Missouri Botanical Garden Press, St. Louis.
  • Stevens, W.D., Ulloa U., C., Pool, A. & Montiel, O.M. (2001). Flora de Nicaragua Monographs in Systematic Botany from the Missouri Botanical Garden 85: i-xlii, 1-2666. Missouri Botanical Garden.


Catálogo de Plantas y Líquenes de Colombia

  • ColPlantA (2021). "ColPlantA. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet;"

CATE Araceae

  • Croat, T. 2004. Revision of Dieffenbachia (Araceae) of Mexico, Central America and the West Indies. Ann. Missouri Bot. Gard.. 91 (4): 668-772

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.

Catálogo de Plantas y Líquenes de Colombia

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 World Checklist of Selected Plant Families.

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.