Monstera tenuis K.Koch

First published in Index Seminum (B, Berolinensis) 1855(App.): 4 (1855)
This species is accepted
The native range of this species is SE. Nicaragua to W. Panama. It is a climber and grows primarily in the wet tropical biome.

Descriptions

Araceae, S.J. Mayo. Flora of Tropical East Africa. 1985

Morphology General Habit
Robust, vigorous climber, to 30 m. tall.
Morphology Leaves
Leaf-blade oblong-ovate in outline, 40–125 cm. long, 30–70 cm. broad, deeply and regularly pinnatifid, base truncate, sinuses extending to midrib; pinnae 12–30 per side, 2–5 cm. broad, constricted basally; petiole 30–60 cm. long, shorter than blade, pulvinate apically; sheath reaching petiole apex.
Morphology Reproductive morphology Inflorescences Bracts Spathe
Spathe boat-shaped, white, up to 33 cm. long.
Morphology Reproductive morphology Inflorescences Spadix
Spadix white, subcylindric, up to 30 cm. long, 5 cm. thick in flower.
Morphology Reproductive morphology Flowers
Flowers bisexual, lacking tepals.
Distribution
Native of Central America. Cultivated at Amani, Tanzania, e.g. Greenway 2240 (K!).
[FTEA]

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

General Description
A robust climber on large trees, to 30m tall, with an open habit of growth and exserted arching leaves. Juvenile: a shingle plant, the laminae nearly round, mucronate at the apex. Adult stem: smooth, 6 – 8 cm wide, 4 -6 cm thick, the internodes 8 – 12 cm long; leaf scars shallow, less than 2cm wide at the widest point, axillary bud in a depression not extended into a sulcus. Petiole: one third to half the length of the lamina, 30 – 60 cm long, vaginate to the lamina base, the sheath wings persistent, to 6 cm broad near the base, geniculum 3 – 5 cm long, 2 – 3 cm thick. Lamina: bright green, not glossy, oblong ovate, truncate at the base, the apex acute, 60 – 125 cm long, 45 – 70 cm wide, deeply and regularly pinnatifid, the sinuses extending to the midrib, 12 – 30 pinnae per side, the pinnae nearly perpendicular to the midrib, 2 – 5 cm wide, constricted near the base; primary lateral veins one per pinna, prominent and white abaxially, the secondary lateral veins parallel to the primary. Peduncle: subterete, 10 – 15 cm long, 3 – 4 cm thick. Spathe: white, 20 -25 cm tall. Flowering spadix: white, cylindric, tapering to the apex, 18 – 24 cm long, 3.5 – 5.0 cm thick, the pistils truncate. Fruiting spadix: green, becoming yellow at maturity, 22 – 35 cm long, 5.5 – 9.5 cm thick, the seeds oblong, 10 – 12 mm long, pistachio green within.
[CATE]

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
  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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