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This species is accepted, and its native range is N. Peru.


CATE Araceae, 17 Dec 2011.

Characterized by small, yellowish green to grayish green elliptic blades and long peduncles. In addition, the spadix is usually reddish.
General Description
Epiphytic or terrestrial ca. 0.5 m tall; internodes short, drying 8-10 mm diam.; cataphylls 3-6 (-9) cm long, drying usually red to brown, lanceolate, persisting at upper nodes as a reticulum of fibers, apex sometimes remaining intact. LEAVES: Petioles 4.5-17.5 cm long (averaging 11 cm long), drying 1-3 (- 4) mm diam., yellow-brown, sulcate above; geniculum slightly thicker than petiole, darkened, 5-20(-30) × 2-5 mm; blades elliptic to oblong elliptic, acute to gradually acuminate at apex, (acumen 0.5-2 cm long), cuneate or slightly attenuate at base, (8-) 10- 23.5 cm long, (averaging 17.9 cm long), 2.5- 7.5 cm wide (averaging 4.5 cm wide), 2.4-5 times longer than broad, 1.2-3.4 times longer than petiole, broadest near middle, margins slightly revolute; upper surface drying grayish-green to yellow green; lower surface drying brownish green, tinged with gray and sometimes reddish brown; midrib fairly uniform throughout on both surfaces, broadly convex, sometimes sunken, drying less than 1 mm diam., and concolorous above, narrowly raised and concolorous to slightly paler below; primary lateral veins 4-6 (-7) per side, ca. 2 cm apart, arising at a 20-40° angle from the midrib, straight, loop-connected to the collective veins, concolorous, sometimes scarcely more prominent than interprimary veins, sometimes drying sunken with an irregular ridge extending along both margins, sometimes bluntly raised; collective veins arising from base, as prominent as primary lateral veins, 3-11 mm from margin. INFLORESCENCE with peduncles 15-29.5 cm long, drying 1-3 mm diam., 1.3-2.2 times longer than petiole, drying dark reddish brown; spathe erect when immature, becoming reflexed-spreading to reflexed, red to purple, sometimes pink, green or tinged with green, linear, sometimes with a subapical apiculum 2 mm long, sometimes furled inward, 2-3.5 cm long, ca. 2-4 mm wide, ca. 0.11-0.13 times the length of peduncle, 0.5 times length of spadix, sharply acuminate; spadix green to pink (red on infructescence), sometimes purple, curved away from spathe, spreading to an almost 90° angle, ca. 6-9 cm long, drying 4 mm diam. Flowers 2.5 × 2 mm, 3-5 visible per spiral, lateral tepals 1 mm long, outer margins 2-sided, concave.
Ranges from Ecuador (Sucumbios, Napo, Pastaza, Morona-Santiago) to northern Peru (Amazonas).
Premontane wet forest transitioning to Tropical (P-wf/T) life zone.

Native to:


Anthurium tsamajainii Croat appears in other Kew resources:

First published in Rodriguésia 56(88): 88 (2005)

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.B., Swart, A. & Yates, E.D. 2005. New species of Araceae from the Río Cenepa region, Amazonas Department, Perú. Rodriguésia. 56(88): 65-126

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 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.