Colocasia fallax Schott

First published in Bonplandia (Hannover) 7: 28 (1859)
This species is accepted
The native range of this species is Uttarakhand to China (Yunnan) and Indo-China. It is a tuberous geophyte and grows primarily in the subtropical biome.

Descriptions

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

Vernacular
jia yu
General Description
Herbs, small to somewhat robust, stoloniferous. Rhizome erect, up to 7 × 1–1.5cm; stolons pale green or pale purple, erect or creeping, mostly simple, 5–60cm × up to 6mm, internodes 0.5–1.5cm, bearing ovoid or cylindric-ovoid tubercles to 3.5cm in diam., or without tubercles. Leaves 3–8; petiole green, sometimes with transverse purple lines, cylindric, 12–57cm, sheathing for almost 1/2 length; leaf blade paler or slightly glaucous abaxially, green or with dark purple patches between primary veins adaxially, cordate-peltate, ovate-cordate, or narrowly oblong-ovate, 8–36 × 3.3–29cm, membranous, apex apiculate; primary lateral veins 5–7. Inflorescences 1–5 together; peduncle green, cylindric, 4–23cm, slender. Spathe constricted or not between tube and limb; tube green, funnel-form or subcylindric, 1.7–4.2 × 0.7–1.7cm, margins convolute; limb at anthesis proximally gaping, distally convolute, erect, sometimes slightly reflexed after anthesis, orange-yellow, golden yellow, or yellowish basally, violet apically, narrowly lanceolate to oblong-lanceolate, 5–11.2 × 2.7–4.8cm, apex long acuminate. Spadix sessile, to 6.5cm, shorter than spathe; female zone yellow, pale yellowish, or green, conic or cylindric, 1–2.6cm × 4–6mm, with 4–6 rows of whitish or yellow staminodes at base; ovary green, speckled white, subglobose or ovoid to oblong, ca. 1mm, 1-loculed; placentae 3; stigma sessile or subsessile, disciform-capitate, or disciform at base and tapering distally into a linear point to 0.5mm; sterile zone present between female and male zones; male zone yellow, cylindric, 1.1–4.6cm × 3–6mm; synandria golden yellow, polygonal, 6–12-androus; distal sterile zone (between male zone and appendix) cream-colored, cylindric, 0.5–1.2cm × 1–3mm, with white hairs, hairs 10–15mm at anthesis, disappearing on drying; synandrodes broadly oblong to depressed ovate or depressed obpyramidal, apex truncate or subtruncate; appendix absent or yellowish, cylindric or narrowly conic, 2.5–4.5cm × 1–2.5mm, scaly-rough, base distinctly constricted or not, apex acute. Berry ripening yellow, ovoid, ca. 2mm. 2n = 28.
Phenology
Fl. Mar–Sep, fr. Jul–Oct.
Habitat
Dense forests, humid forest margins, moist mossy rock faces in forests, valley scrub, moist shaded places along streams.
[CATE]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/194794/8902631

Conservation
LC - least concern
[IUCN]

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
  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0