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  1. Family: Araceae Juss.
    1. Genus: Anthurium Schott
      1. Anthurium longissimilobum Croat

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


    CATE Araceae, 17 Dec 2011.


    Conservation for Anthurium longissimilobum must be considered as Least Concern (LC) according to IUCN Red List criteria (IUCN, 2001) because it is known from four collections in three provinces.


    Planta epiphytica; intemodia brevia, 1-2 cm diam.; cataphyllum intactum persistens; petiolus (16-)31-67.7 cm longus, (2-)5-8 mm diam.; lamina anguste triangulari subhastata, (22-)57.5-73.5 cm longa, (6.3-)11.5-25.2 cm lata, lobis posterioribus 6.2-14.9 cm longis, (2-)3.2 5.5 cm latis; pedunculus 65-76 cm longus; spatha 30.5 37.8 cm longa, 1.1-2.2 cm lata, ad basim usque ad ca. 9.5-10.8 cm decurrens; spadix pendens, 43.5-54.8 cm longa, ad apicem 6-8 mm diam., ad basim 6-10 mm diam.


    Anthurium longissimilobum, a member of Anthurium sect. Calomystrium, is endemic to the transitional zone between Premontane wet forest (P-wf) and Tropical moist forest (T-mf), at 670 to 1510 m elevation, in the area of Tingo Maria in Huanuco Province, Peru.

    General Description

    Appressed-climbing epiphyte; stem less than 20 cm; internodes short, less than 1 cm, 1-2 cm diam., drying reddish brown; leaf scars ca. 1.2 X 1.3 cm, mostly obscured by persisting cataphylls; roots not seen; cataphylls bluntly 2-ribbed, coriaceous, (6.5-)8-23.5 cm, narrowly acute, drying pale reddish brown, persisting intact; petioles semi-erect, (16-)31-67.7 cm, (2-)5-8 mm diam., subterete, semi rigid, matte, faintly striate, otherwise smooth, drying pale reddish brown, sheathed to (1-)3-4 cm; geniculum 1.5-2 cm, drying more distinctly reddish brown than petiole; blades narrowly triangular-subhastate, subcoriaceous, narrowly acuminate at apex, broadest at base, (22-)57.5-73.5 X (6.3-)11.5-25.2 cm, 2.9 5x longer than wide, subhastate with slender posterior lobes spreading at 155°, adaxial surface drying light olive-green, abaxial surface reddish brown; anterior lobe (4.5-)6-7 cm midway; posterior lobes 6.2-14.9 X (2-)3.2-5.5 cm, 1.9-3.2X longer than broad, rounded at apex, margins straight and revolute; sinus bullet-shaped, 6.2-14.9 cm deep; midrib prominently raised near base adaxially and diminishing toward apex, drying light brown, convex, drying light reddish brown abaxially; basal veins numerous, none free to base, coalesced; posterior rib (2.5-)11-14.5 cm, naked 1-4 cm; primary lateral veins numerous per side, generally spreading at 800, usually sigmoid, arising at ca. 80, forming an S-shaped curve, then merging on the upward swing with the margin, weakly raised and about as prominent as interprimary veins adaxially; interprimary veins ± equaling primary lateral veins; tertiary veins visible and weakly raised abaxially; collective veins moderately weak, arising from near the outer base of posterior lobes, slightly more prominent than primary lateral veins, (1-)3-8 mm from margin. INFLORESCENCE with peduncle 65-76 cm, 4-6 mm diam., subterete, about as long as petiole, drying light reddish brown; spathe semi-erect at ca. 200, curved gradually backward, 30.5-37.8 x 1.1-2.2 cm, ca. 1/2 as long as peduncle, inserted on peduncle at ca. 100, conspicuously decurrent, subcoriaceous, bright yellow-green, forming a spiral, drying reddish brown, acuminate at apex, acumen spiraled and apiculate, narrowly acuminate and decurrent ca. 9.5-10.8 cm at base; spadix pendent, cylindrical but slightly tapered at apex, 43.5-54.8 cm, 6-8 mm diam. at apex, 6-10 mm diam. at base, ca. 78-87x longer than wide, stipitate 5-20 mm in back, drying dark reddish brown. Flowers ca. 3.2 x 3.3 mm, edges straight; 4 to 5 flowers visible on the principal spiral, 5 to 7 flowers visible on the alternate spiral; tepals drying dark brown, lateral tepals 1.5-1.9 mm, outer margins rounded to broadly rounded; pistils weakly exserted above tepals on drying, drying dark reddish brown; anthers ca. 0.4  x 0.8 mm; thecae broadly ovate to round when open. INFRUCTESCENCE erect; peduncle ca. 65 cm, ca. 6 mm diam.; spadix to 22 cm, ca. 1.5 cm diam.; tepals brown; berries dark violet-purple to yellow-green (sensu Schunke 7289).


    Other Data

    Anthurium longissimilobum Croat appears in other Kew resources:


    First published in Novon 18: 154 (2008)

    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
    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.