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  1. Family: Araceae Juss.
    1. Genus: Anthurium Schott
      1. Anthurium riograndicola Matuda

        This species is accepted, and its native range is Mexico (E. Oaxaca).


    CATE Araceae, 17 Dec 2011.

    General Description
    Terrestrial; stems 2 cm diam. or larger; cataphylls triangular, drying reddish-brown, weathering into moderately thin longitudinal fibers. LEAVES with petioles to 50 cm long, 7-9 mm diam., bluntly sulcate adaxially; geniculum 1.5 cm long, thicker than petiole, obtusely and narrowly sulcate; blades coriaceous, narrowly ovate, acute at apex with short apiculum, deeply lobed at base, to 35 cm long, 22.5 cm wide, broadest just below point of attachment; the anterior lobe 25.5 cm long; the posterior lobes 12.5 cm long from apex of sinus to tip of lobe; sinus obovate, rounded at apex; upper surface semiglossy, with sparse glandular punctuation's, lower surface semiglossy with dense glandular punctations (the punctae irregular, to 0.4 mm diam.); the midrib prominently raised above, diminished and sunken at apex, sharply raised below; basal veins 5-6(7) pairs, the 4-5(6)th coalesced ca. 3.5 cm; posterior ribs slightly curved, the outer margin curled up and inward; the primary lateral veins 4-5 per side, scarcely visible, departing midrib at 50° angle, curved to the collective vein, raised below, interprimary veins scarcely less prominent than primary lateral veins; collective vein arising from one of the basal veins, 2-10 mm from margin. INFLORESCENCE erect-spreading (?); peduncle to 69 cm long, 7 mm diam., terete, longer than petioles; spathe subcoriaceous, green tinged with purple, oblong-lanceolate, to 11.5 cm long, to 1.2 cm wide, broadest just above the base, meeting on peduncle at ca. 90° angle; spadix sessile, to 17.5 cm long, to 1 cm diam. at base, to 4 mm diam. At apex; flowers rhombic, 3.7-4 mm long (dry), 2.7-3 mm wide (dry), the sides straight to sigmoid; 8-10 flowers visible in the principal spiral, 6-7 flowers visible in the alternate spiral; lateral tepals ca. 2 mm wide (dry), the inner margins concave; pistils weakly emergent; the stigma ellipsoid, 1 mm long; stamens exserted just above edge of tepals; anthers held at edges of pistil, 0.5 mm long (dry), 0.7 mm wide; thecae broadly elliptic, scarcely divaricate; pollen not seen. INFRUCTESCENCE not seen.
    Known only from the type specimen collected perhaps in eastern Oaxaca, although no typical aroid collecting area is represented there. The notes by MacDougall attribute the collection from between "La Gloria and Río Grande." There are a number of towns with either name in Oaxaca.


    Native to:

    Mexico Southwest

    Other Data

    Anthurium riograndicola Matuda appears in other Kew resources:


    First published in Anales Inst. Biol. Univ. Nac. México 27: 347 (1957)

    Accepted by

    • 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.
    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.


    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 2020. 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 2020. Published on the Internet at and
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.