Araceae
Anthurium

Anthurium straminopetiolum Croat

First published in Aroideana 34: 61 (2011)
This species is accepted
The native range of this species is Peru. It is a subshrub and grows primarily in the wet tropical biome.

Descriptions

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

Distribution

Anthurium straminopetiolum is endemic to Peru, known only from the type locality in Amazonas Department in the valley of the RIO Cenepa at 200-250 m elevation in a Premontane wet forest life zone.

General Description

Terrestrial; internodes 6.0-9.0 cm long, .5-.7 cm diam., drying light grayish green, coarsely granular, wispy; cataphylls 5.0-10.2 cm long, .6-1.0 cm wide, pale yellow, gradually narrowing toward apex, dense dispersion of pale linear, minute ribs resembling waves; petioles 25.4-33.2 cm long, .4-.6 cm wide, drying pale grayish-yellow, moderate to deeply ribbed areas; geniculum 1.3-1.5 cm long, .3-.5 cm wide, drying with a darker shade of grayish-yellow, deeply ribbed on upper surface, round-raised on lower surface; blades ovate, 31.3-40.7 cm long, 15.8-24.6 cm wide, 1.8 times longer than broad, slightly to moderately lobed, abrupt acuminate at apex; upper surface densely and finely granular on magnification; lower surface drying semiglossy, sparsely granular in the areoles; anterior lobe 29.2-37.5 cm long, 15.2-24.0 cm wide; posterior lobe 3.2-6.6 cm long, 4.8-7.5 cm wide, parabolic to hippocrepiform, rounded at apex; basal veins 5-6 pairs, 1st-2nd pair free to base, 3rcl fused 1.2-1.8 cm, 4th fused 2.0-2.2 cm, 5th-6th fused 2.5-2.8 cm; posterior rib naked 1.3-2.1 cm; midrib narrowly rounded to bluntly acute, above, thicker than broad to weakly round-raised below, very minutely granular above and below; primary lateral veins 6-8 on each side arising at 48°-52°, narrowly rounded, somewhat glossy , thicker than broad above and below; tertiary veins drying much lighter than the blade; collective veins  arising from 1st-2nd basal vein, 1.0-3.0 mm from margin. INFLORESCENCE erect; peduncle 9.6-20.2 cm long, 2-4 mm wide; spathe 8.3-9.6 cm long, .8-1.2 cm wide, 9 times longer than broad, oblong, narrowly rounded at apex, minutely ribbed, pale-lineate, light green, spreading, drying greenish gray; spadix 7.3-11.8 cm long, drying .5-1.2 diam., white, 11 times longer than broad; flowers 5 visible per spiral, 1.0-1.2 cm long and wide, 4-lobed, tepals minutely granular, bicolorous, lateral tepals .4-.6 mm wide, inner margins rounded, outer margins 3-sided.

[CATE]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: threatened. Confidence: confident
[AERP]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • 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 Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0