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This species is accepted, and its native range is Brazil (Amazonas).


CATE Araceae, 17 Dec 2011.

General Description
Terrestrial; internodes short, drying 1-1.8 cm diam.; cataphylls 10.5-16 cm long, weakly ribbed, drying brown to reddish brown, lanceolate, persisting at upper internodes intact, acute at apex. LEAVES: Petioles 39-64 cm × 5-8 mm, 1.1-1.4 times longer than blades, drying reddish brown; geniculum as broad as or thicker than petioles, blackened or concolorous, 2-3 cm long, drying 4-5 cm diam.; blades broadly ovate-cordate, acuminate (acumen 1-1.3 cm long with short apiculum ca. 1 mm long), 35-42.2 × 26.5-36 cm, 1.1-1.3 times longer than wide, drying dark yellowish brown, weakly glossy above, medium-dark reddish brown, semi-glossy, dark punctate below; anterior lobe 27-32.5 cm long, broadest above the petiole attachment, broadly convex along margins; posterior lobes 13.5-17 × 12-13.5 cm, directed downwards; midrib broadly convex to convex with acute margins, drying to 1 mm wide, concolorous above, broadly convex to convex, prominently raised with an acute medial rib, +/- concolorous below; primary lateral veins 4-5 per side, 2.5-4.5 cm apart, departing midrib at a 45°-55° angle and extending nearly straight to a collective vein, flat to broadly convex below, raised above, conspicuous and drying concolorous, more prominent than interprimary veins on both surfaces; basal veins 5-6 per side, 1st and usually the 2nd pairs free to base, 4th and 5th coalesced to 2-3.8 cm; basal rib naked for 1.5-2.5 cm along sinus; collective veins arising from 1st pair of basal veins but often weakly loop-connected with the 2nd or 3rd pair of basal veins, 1-3 mm from margin, less prominent than primary lateral veins; reticulate veins prominently raised. INFLORESCENCE erect; peduncle 15.5-20 cm long, drying 3-5 mm diam., drying reddish brown; spathe reflexed-spreading, green or creamy white, narrowly oblong-elliptic, 10-13.5 × 1.8-2.7 cm, acuminate at apex (acumen inrolled, ca. 4-5 mm long); spadix red, cylindroid-tapered, erect, 15-18 cm long, drying 7-8 cm diam. Flowers 1.8 × 1.4 mm, 10-11 visible per spiral; lateral tepals 1 mm wide, broadly rounded on inner margin, 2-sided on outer margin.
Characterized by its dark red spadix and large reddish brown-drying, punctate blades with only 4-5 primary lateral veins. The species can be compared with A. grande N. E. Br. which differs from A. rojasiae in having blades 1.9 times longer and a greenish yellow spadix, in contrast to leaf blades 1.1-1.3 times longer than wide, and a red spadix for A. rojasiae.
Only known from the type locality in northern Perú.
Premontane wet forest transition to Tropical (P-wf/T), and Tropical Lower Montane wet forest (TLM-wf) life zones.

Native to:

Brazil North

Anthurium rojasiae Croat appears in other Kew resources:

First published in Rodriguésia 56(88): 86 (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.