Family:
Araceae Juss.

Cryptocoryne mekongensis T.Idei, Bastm. & N.Jacobsen

This species is accepted, and its native range is E. Thailand to Laos.

[CATE]

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

Distribution

Thailand, Mekong River: Laos, southern region of Champasak Province: Cambodia, Kratie Province.

General Description

Deciduous herb to 1.3 m tall. Subterranean stem a subglobose, stoloniferous tuber, up to 4 cm across and 2 cm high, white, with stolons to 10 × 1 cm. Pseudostem ca 20 cm long, green, mottled grey and pink. Leaf solitary, exceptionally bifoliate; cataphylls to 20 cm long, purple; petiole to 1 m long, similar in colour to the pseudostem; leaf blade radiate; leaflets 7–11, ovate, 10–20 × 4–6 cm, margins entire, apex acute, ending in an acumen 1 cm long, base cuneate and sessile, leaflets plain green, with impressed veins above, underside paler. Inflorescence held below the foliage; peduncle 5–20 cm long, green and pink mottled; spathe tube cylindrical, 4–6 × 1–1.2 cm, green with thin white stripes, spathe mouth margins recurved; spathe limb lanceolate, 5–8 × 3–4 cm, green, flushed red-brown, ending in a long brown tail to 25 cm long; spadix appendix well exserted from the tube, 5–6 cm long × 3–4 mm wide, pale green, stout, cylindrical, ending in a rounded and rugose apex curving forward; sessile, pistillate inflorescences with green bristles above the fertile part; fertile zone staminate or pistillate, cylindrical, 1.5–2 cm long; staminate flowers loosely arranged; pistillate flowers densely arranged; ovaries bottle-shaped, green; stigma sessile, penicillate, white. Infructescence on an erect peduncle, globose, 3–5 cm; fruits red-orange when ripe, 8–10 × 5–7 mm, top rounded, up to 3 seeds per berry. Seeds globose, 3–4 mm diam.

Habitat

Cryptocoryne mekongensis grows on river banks that emerge during the dry season from February to April, in partial sun. It can be found sheltered between rocks and big stones or in sheltered places growing in sand and gravel and more or less mud covered. Cryptocoryne mekongensis has been found growing together with different varieties of C. crispatula.

Native to:

Cambodia, Laos, Thailand

Cryptocoryne mekongensis T.Idei, Bastm. & N.Jacobsen appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Idei, T. [5607], Laos K000950334 isotype Yes

First published in Aqua Pl. 35: 143 (2010)

Accepted by

  • Boyce, P.C., Sookchaloem, D., Hetterscheid, W.L.A., Gusman, G., Jacobsen, N., Idei, T. & Nguyen, V.D. (2012). Flora of Thailand 11(2): 101-325. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.
  • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Chou, S., Chhnang, P. & Kim, Y. (2016). A Checklist for the Seed Plants of Cambodia: 1-272. National Institute of Biological Resources, Korea.

  • 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

  • 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 Selected Plant Families 2022. 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 2022. 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