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This species is accepted, and its native range is NE. Costa Rica to W. Panama.
A specimen from Kew's Herbarium

[CATE]

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

General Description
Slender herb, 40-100 cm tall; stems briefly creeping at base; internodes 2-6 cm long, 1.5-3.5 cm diam., medium green to olive-green, sometimes streaked with cream, semiglossy and obscurely roughened. LEAVES clustered near stem apex, erect-arching; petioles 17-46 cm long (averaging 26.5 cm long), sheathed 25Wo-83Wo of petiole (averaging 54%); sheath 10-22 cm long (averaging 14.2 cm), decurrent at apex; unsheathed portion (2.5)10-30 c m long, broadly C-shaped in cross section, dark green to brownish, flattened with acute, erect margins or sharply to bluntly sulcate adaxially, surface pale green-mottled, matte, usually minutely roughened and with scattered scales, whitish raphide c e11s visible, drying with scattered clusters of pustular raised areas with granular-puberulent protrusions; Blades narrowly elliptic to lanceolate, rarely narrowly ovate, inequilateral, one side 1-2 cm wider than the other side, thinly coriaceous to subcoriaceous, drying papyraceous, weakly bicolorous, ± equilaterally acuminate at apex (the acumen to 5 mm long), slightly inequilateral and acute, rounded or truncate (rarely subcordate in Panama) at base, 16-41 cm long, 6.5-15 cm wide (averaging 28 x 10.7 cm), 1.8-5.3 times longer than wide (averaging 2.6), 0.7-1.9 times longer than petioles (averaging 1.12 times longer than petioles); margins crisped-undulate; upper surface dark green (in Panama sometimes mottled with white or cream), semiglossy (rarely matte), lower surface semiglossy to weakly glossy or matte, slightly paler; midrib flatraised above, often striate, usually concolorous above, convex to thicker than broad below, puberulent with thick, whitish trichomes below; primary lateral veins 23 to 30(36) per side, departing midrib at a 70°-110° (to 45° toward apex and sometimes at base) angle, arising acutely then straight to weakly curved to the margins (then sweeping prominently toward apex), usually quilted-sunken above, convex, puberulent with thick, whitish trichomes, sometimes with adjacent veins alternating ascending and descending below; interprimary veins usually present, scarcely less visible than primary lateral veins; minor veins moderately distinct and weakly raised below. INFLORESCENCES 1 to 3 per axil; peduncle 9-13 cm x 5-7 mm, drying 3- 4 mm diam.; spathe 10-19 cm long, gradually constricted at middle, green throughout, gradually long-tapered to apex; spathe blade to 3 cm diam. when flattened; spathe tube 1-2 cm diam.; spadix 13-15 cm long; pistillate portion 4.5-6 cm long, drying 7 mm diam. throughout; fertile staminate portion 5-6.5 cm long, drying 4 mm diam. through- out; intermediate mostly sterile portion usually 2- 3.5 cm long, 2 mm diam., sometimes with pistillate and staminate portions almost contiguous; pistils 46 to 66(100), 2 to 4 situated across the width of the spadix, ovary oblong-ellipsoid, 1.5-2 x 1-1.6 mm; stigmas subgloloular, about as broad as the ovary; staminodia narrowly clavate, usually not at all fused at base, ca. twice as long as pistil; synandria 1.8- 2.6 mm diam., margins irregularly subrounded drying smooth and light brown at apex. INFRUC'I'ESCENCE, with spathe (10)14-16 cm long, somewhat flattened, yellow-green mottled green and white with darker flecking, maturing to orange; spadix 6-10 m long; berries orange, subglobose, 6-8 mm diam.
Diagnostic
The species is characterized by its moderately thin, quilted blades with many broadly spreading primary lateral veins and crisped-undulate margins with the lower midrib and primary lateral veins puberulent.
Distribution
It ranges from northeastern Costa Rica to western Panama (Bocas del Toro, Chiriqui, and Veragua).
Phenology
Dieffenbachia beachiana initiates inflorescences in the late rainy season with plants reaching anthesis in the dry season (January through April). Immature fruits have been seen from April to September and mature fruits have been seen from April to December.
Habitat
In Costa Rica it occurs on the Atlantic slope of the Central Cordillera and the Cordillera Talamanca, ranging from the Sara- piqui region to Tortuguero and Siquirres.

Native to:

Costa Rica, Panamá

Dieffenbachia beachiana Croat & Grayum appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Croat, T.B. [60130], Panama K000400551 isotype

First published in Novon 9: 491 (1999)

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.

Literature

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.
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