1. Family: Araceae Juss.
    1. Genus: Anthurium Schott
      1. Anthurium hamiltonii Croat & Lingán

        This species is accepted, and its native range is Peru (Pasco).

    [CATE]

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

    General Description
    Description based on dried material. Terrestrial to hemiepiphytic; roots 2–3 mm diam., whitish to grayish brown; stem terete, 1.9–2.1 cm diam.; internodes 7–20 mm long; cataphylls 11.6–15.7 cm long, obtusely 1- ribbed, lanceolate, subcoriaceous, green to reddish, persistent as reddish brown to dark brown fibers. Leaves erect to spreading; petioles 73.5–93.2 cm long, 6–9 mm diam., terete to slightly sulcate, green; sheath 3.9 cm long; geniculum 1.2–1.4 cm long; blades subcoriaceous, drying papiraceous, 50–52.2 cm long, 29.8–34.9 cm wide, ovate, acuminate to apex, deeply cordate at base, darker and semiglossy above, slightly paler and matte below; posterior lobes oblong, convergent, 16.9–19.1 cm long, sinus rhombic to spatulate; midrib convex on both surfaces; primary lateral veins 6–8 per side, more conspicuously convex below, arcuateascending, departing midrib at 30°–50º; basal veins 7–8 pairs, the 1st to 6th or 7th coalesced; posterior rib 8.3–8.7 cm long, curved, naked 6.3–6.7 cm along the sinus; collective veins arising from the 4th or 5th pair of basal veins, 1–6 mm from the margin. Inflorescence erect; peduncle 59.5–69.7 cm long, 0.5–0.7 cm diam., green, 0.7–0.8 times longer than the petiole; spathe subcoriaceous, green, persistent, erect, 12.5–16.5 cm long, 6.4–7.2 cm wide, broadly ovate to oblong-lanceolate, hooding, abruptly acuminate to acute at apex, obtuse to rounded at base, the margins joining at approximately 170º angle; spadix cylindric, 6.4–7.8 cm long, 0.9–1.1 cm diam., yellowish green to greenish; stipe greenish, 0.6–1.9 cm long in front, 2–3 mm long in back; flowers square, the margins slightly sigmoid, 4 ´ 4 mm; 7–8 flowers visible in the principal spiral, 9–10 flowers visible in the alternate spiral; lateral tepals with the inner margins concave, the outer margin 3-sided, anterior and posterior tepals 5-sided; pistils ca. 3 mm long, largely obpyriform; stigmas oblong-linear; stamens ca. 3 mm long, protruding ca. 1 mm long at anthesis; filaments flattened; anthers not convergent above the stigmas at anthesis; thecae not divaricate; pollen light yellow. Infructescence not observed.
    Distribution
    Anthurium hamiltonii is endemic to Peru, known from the Department of Pasco in the Parque Nacional Yanachaga-Chemillén, Sector San Alberto, as well as in the Department of Cajamarca in the Parque Nacional de Cutervo.
    Habitat
    This species prefers shady areas, but can also be found in exposed areas in Tropical Lower Montane wet forest (TLM-wf), .
    Diagnostic
    The species is a member of Anthurium section Belolonchium and is distinguished by its cordate long-petiolate leaves, cataphylls persistent as a dark brown mass of fibers, and broadly ovate spathe that is erect and held close to the spadix, as well as by the greenish to yellowish cylindric spadix. The species is probably closest to A. macleanii with which it shares cordate leaves and persistent fibrous cataphylls, but the latter has a stipitate and purplish spadix (versus yellowish green in A. hamiltonii). Anthurium monzonense differs in having proportionally broader and shorter lobes, a much longer petiole sheath and having a more tapered spadix.

    Distribution

    Anthurium hamiltonii Croat & Lingán appears in other Kew resources:

    First published in Rodriguésia 56(88): 44 (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.

    Literature

    CATE Araceae
    • Croat & Lingán 2005.New Species of Anthurium (Araceae) from the Peruvian Andes. Rodriguésia. 56(88): 43-51

    Sources

    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.
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. 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 2019. 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