1. Family: Araceae Juss.
    1. Genus: Anthurium Schott
      1. Anthurium acutissimum Engl.

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


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

    Known from the provinces of Pichincha and Los Rios in Ecuador.
    General Description
    Epiphytic, epilithic or terrestrial; stem short, 3-4(10) cm diam.; roots forming a dense mass, descending, drying whitish gray, somewhat pubescent, elongate, 2-4 mm diam.; cataphylls linear-lanceolate, (7)12- 17 cm long, linear-elongate, drying brown to reddish brown, persisting semi-intact or as coarse linear fibers or as a reticulum of fibers. LEAVES spreading to pendent; petioles (7.5)20-50 cm long, 5-12 mm diam., terete to subterete, somewhat flattened adaxially, rounded abaxially, surface pale-speckled; geniculum flattened, slightly darker and thicker than petiole when dried, 1-2 cm long; blades usually pendent, coriaceous, oblong to oblong-elliptic, acuminate at apex, acute to narrowly acute at base, 60- 118 cm long, 7.5-14 cm wide, broadest at or near the middle, the margins flat; upper surface matte, semivelvety, lower surface glossy, both surfaces dark to medium green, drying green to yellowish green, matte; midrib convexly raised, paler than surface above, prominently convex, much paler than surface below; primary lateral veins numerous, more than 25 per side, departing midrib at 50-70° angle, straight to the collective vein, flat and pale above, obscure below, slightly raised above when dried, more so below; interprimary veins moderately numerous, drying almost as conspicuous as primary lateral veins, raised above and below; tertiary veins obscure; collective vein arising from near the base, weakly raised above and below when dried, equally as prominent as primary lateral veins, 4-17 mm from margin. INFLORESCENCES spreading to pendent; peduncle 22-64 cm long, (2)3-4 mm diam., equally or to 1.7 x as long as petiole, terete; spathe spreading, subcoriaceous, green to green-tinged with purple at margins, oblong-lanceolate, (5.5)8-21 cm long, 1.1-2.4 cm wide, broadest near the base, acuminate at apex (the acumen inrolled, to 25 mm long), acute at base; stipe 7-20 mm long in front, 0-4 mm long in back; spadix green to yellow-green, subsessile, erect, straight to curved, held at 160-180° angle from peduncle, (6.5)10.5-2 1.5 cm long, (3)6-8 mm diam. near base, (2)4-5 mm diam. near apex, broadest at the base; flowers square to rhombic, 2.2-2.8 mm in both directions, the sides smoothly sigmoid, (3)4-5 flowers visible in principal spiral, 6-9 in alternate spiral; tepals matte, pale-punctate when dried; lateral tepals 1.3- 2 mm wide, the inner margins convex, becoming turned up against the pistil, the outer margins 2- sided; pistils emergent, raised, same color as tepals; stigma slitlike, becoming ellipsoid, 0.5-0.8 mm long; stamens emerging from the base, held well above the tepals, persisting, laterals emerging almost to apex before the alternates emerge in basal third, held in a circle around the pistil; filaments white, flattened, exserted, 0.7-1 mm long, 0.6- 0.7 mm wide; anthers drying yellowish to brown, 0.5-0.8 mm long, 0.4-0.7 mm wide; thecae oblong, not divaricate. INFRUCTESCENCE pendent; spathe persisting, green or withered; spadix ca. 23-30 cm long, 2 cm diam., with berries scattered throughout; berries yellow-orange becoming orange, ovoid to broadly ellipsoid, "hollow" when rehydrated, acute at apex, (6)8.6-9.5 mm long, 4-4.5 mm diam.; pericarp thickened, with some raphide cells; seeds 2 per berry, yellowish, oblong-ovoid, flattened, 3.7-4.8 mm long, 2.3-2.4 mm diam., 1.3-1.6 mm thick, with a transparent, gelatinous appendage at both ends.
    Premontane moist and premontane wet forest life zones.


    Native to:


    Anthurium acutissimum Engl. appears in other Kew resources:

    First published in Bot. Jahrb. Syst. 25: 398 (1898)

    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 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 2020. 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