Araceae Juss.

Alocasia boyceana A.Hay

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


CATE Araceae, 17 Dec 2011.

Philippines, on Luzon, Cebu, Negros.
Rain forest at low to medium elevation, sometimes on limestone.
General Description
Moderatly robust herb to ca. 60 cm tall; stem ca. 2 cm diam.; leaves few, ?1-3 together, often subtended by cataphylls; cataphylls papery, lanceolate, to ca. 11 cm long; petiole to ca. 45 cm long, sheathing in the lower third, sometimes maculate ; blade rather narrowly sagittate to narrowly hasto-sagittate, to ca. 35 cm long; anterior lobe to 24 cm long, ca. 11 cm wide at base, with 4-5 primary veins on each side of the anterior costa diverging at 45-80°; margin slightly undulate to entire; primary lateral veins somewhat prominent adaxially and abaxially, with incospicuous glands in the axils on abaxial side; secondary veneration arising from the primary at ca. 70-90° then deflected marginally, not or hardly forming interprimary collective veins; posterior lobes slender, about half the length of the anterior; posterior costae diverging at an obtuse (hastate) to acute (sagittate) angle, naked in the sinus for 1-2 cm; inflorescences paired or solitary; peduncle to ca. 20 cm long; spathe ca. 7.5 cm long; lower spathe ca. 2 cm long, ovoid, seperated from the limb by a strong constriction; limb lanceolate, reflexed; spadix somewhat shorted than the spathe, stipitate for ca. 4 mm with the stipe partly adnate to merely obliquely inserted on the soathe; female zone 6-8 mm long; pistils subglobuse, ca. 1.5 mm diam.; stigma subsessile, rather sharply 3-4 lobed; sterlie interstive about equaling the female zone, tapering distally, its top corresponding with spathe costriction; male zone ca. 12 mm long, clylindric, ca. 5 mm diam.; synandria rhombo-hexagonal, ca. 1 mm diam., opening by apical pores not overtopped by the synconnective; appendix 1.5-1.7 cm long, tapering, composed of irregularly sinuate staminodes, slightly narrower than to equalling the make zone in thickness; infructescence broadly ovoid, ca. 2.4 cm diam.
With a stipitate spadix, sharply lobed stigmas and cataphylliferous stem with few leaves,

Native to:


Alocasia boyceana A.Hay appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 1997 Whitford, H.N. [1362], Philippines K000400139

First published in Gard. Bull. Singapore 51: 9 (1999)

Accepted by

  • Govaerts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae (and Acoraceae): 1-560. The Board of Trustees of the Royal Botanic Gardens, Kew.


CATE Araceae

  • Hay, A. 1999. The genus Alocasia (Araceae-Colocasieae) in the Philippines. Gardens Bull. Singapore. 51: 1 - 41.

  • 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.

  • Herbarium Catalogue Specimens

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  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. 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 2022. Published on the Internet at and
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.