Araceae Juss.

Dieffenbachia lutheri Croat

This species is accepted, and its native range is Panama.


CATE Araceae, 17 Dec 2011.

A flowering collection was made in Panama, and the species has flowered in cultivation in October at the Marie Selby Botanical Gardens.
The species is most similar to D. longispatha in having a considerable portion of the petiole unsheathled and obtusely sulcate; the sheath acute at the apex; and a blade of generally similar shape and dried color.
Dieffenbachia lutheri is apparently endemic to the region of Cerro Colorado in Chiriqui and Bocas del Toro Province.
In the Lower montane rainforest (LM-rf) life zone (Holdridge, 1967)..
General Description
Herb, 0.6-1.5 m tall; sap not smelling of oxalic acid; internodes short, to 2 cm long, 2.0-2.4 cm diam., dark green and semiglossy, drying matte and blackened; petioles ca. 23 cm long, dark green and weakly glossy, smooth or with fine, obscure lines on fresh material, sheathed 0.7 their length. Drying dark olive-gray toward base, somewhat yellowish brown toward apex; sheath acute on one side at apex, the other side narrowly rounded at apex, with both sides confluent, the sheath margins drying thin, pale brown, the innel surface of the sheath pale yellow-green and very glossy, drying light yellow-brown, much paler than the outer surface; free portion of the petiole oval to sharply C-shaped in cross section, 7 cm long, sharply sulcate to flattened with sharply ridged margins; blades narrowly ovate, (24)27-34 x 14-15 cm, 1.9-2.2(2.7) times longer than wide, slightly inequilateral, one side 0.9-1.7 cm wider than the other, weakly to narrowly acuminate to acute and apiculate at apex, rounded and usually inequilateral, sometimes acute and decurrent on the petiole at base, moderately undulate along the margins, moderately coriaceous to subcoriaceousX very dark green and semiglossy to weakly glossy above, sometimes mottled in a band along the midrib (especially heavy on one side below the middle) with yellow-green to cream above, drying dark gray-brown to dark brown and matte to weakly glossy above, slightly to moderately paler and weakly glossy to matte below, drying yellow green, weakly glossy; midrib slightly flat-raised concolorous and 4-5 mm wide, weakly ribbed and medially sulcate above, narrowly rounded and slightly paler below drying flat-raised and slightly darkery yellow-brown above; primary lateral veins 14 to 16 per side, arising at an acute angle, then spreading at 25°-70° angle (25°-45° angle toward the apex,6 5°-70° toward the base), weakly quilted-sunken to narrowly sunken and concolorous, some-times in weak valleys above, darker and convex to round-raised, minutely granular-puberulent to scabridulous below, drying weakly and narrowly raised, concolorous above, irregularlya ngulara nd yellow-brownb elow;m inorv eins on uppers urface in part weakly etched, concolorous, those on the lowers urface moderately obscure to easily visible, darker than surface; lower surface densely pale-spotted, the spots regularly rounded and evenly spaced. INFLORESCENCE 1 per axil; peduncle 4 - 6 cm long, 1 cm diam., drying dark yellow-brown, 3.5-8 mm wide; spathe pale green on both surfaces, white near tip, acuminate at apex, 16.5-20.S cm long, flattened to 3.5 cm wide on tube, drying yellowish brown; spadix 14 -20 cm long (including 1 - 1.5 cm long stipe); pistillate portion of spadix 7 .0 - 7.3 cm x 8-9 mm, completely contiguous with staminate portion or nearly so; staminate portion of spadix 5.3-8 cm x 5-9 mm on drying, with the remnants of thickened thecae visible along upper margins; pislils 55 to 66, 2 to 4 or them in a spiral across the width of the spadix, sometimes moderately sparsely spaced drying sometimes prominently comvex and the pistils thus visible from both top and side views; pistils 1.4-2.3 mm wide; stigmas pale yellow, 1.3-l.7 mm diam., drying with short, mostly acute, mostly erect strigose trichomes; staminodia 2 -3 mm long, 1.0-1.6 mm wide, markedly thickened at the apex, sometimesb broader than long, white, drying yellow-brown; synandria creamy white, drying irregularly rounded to angular, 0.5- 3.0 mm wide, yellow-brown, the apex sunken on drying, medium yellow-brown with pale, rounded, cellular inclusions. Berries not seen.

Native to:


Dieffenbachia lutheri Croat appears in other Kew resources:

First published in Ann. Missouri Bot. Gard. 91: 729 (2004)

Accepted by

  • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.


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.

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. 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 2022. Published on the Internet at and
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.