Family:
Araceae Juss.
Genus:
Arum L.

Arum gratum Schott

This species is accepted, and its native range is W. Syria to N. Lebanon.

[CATE]

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

General Description
Tuberous herb sprouting in early winter from a discoid, vertical tuber 3.4-5 cm across, 1.5-2.5 cm thick. Petiole terete 17.5-25(-30) cm long (up to 50 cm long according to Mouterde, 1966), 3-4.5 mm wide, deep green. Leaf- blade hastate-sagittate to oblong-hastate, apex subacute, 9-18 cm long, 7-12 cm wide, deep green, occasionally with jagged purple-black blotches. INFLORESCENCE sweet-smelling. Peduncle very much shorter than the leaves, often absent above soil level, 0-2.5 cm long, 4-5 mm wide, pale green, longitudinally striped with reddish brown. Spathe 12-18.5 cm long; spathe-tube often partially buried, oblong-ventricose, 2-3.5 cm long, 1.5-2 cm wide, constricted apically, exterior off-white below (if buried) or pale green (if exposed), mid-green, stained with purple above, this colour intensifying towards the margins and apex, interior with a pale greenish white lower half and purple upper half; spathe-limb elliptic-ovate, 10-15 cm long, 5-6.5 cm wide, cucullate, acute to minutely acuminate, externally pale green flushed with pale purple, apex and median vein greenish, internally olive-green, flushed with pale purple, occasionally with jagged purple-black blotches. Spadix less than ? as long as the spathe-limb, 5.5-6.5 cm in total length; appendix strongly clavate, stipitate, 4-4.5 cm long, 5-6 mm wide, reddish purple to greenish purple, stipe purple. Staminodes 3 whorls forming a zone 1.5-2 mm long; bristles filiform, flexuous, 2.5-3.5 mm long, cream, tipped with purple; bases conic, smooth, cream. Interstices : upper 0.5-1 mm long, smooth, cream; lower ± absent. Staminate flowers in an oblong zone 4-5 mm long, 3.5-4 mm wide; anthers and connectives dull purple. Pistillodes in 1 whorl forming a zone 0.5-1 mm long; bristles aristate, stiff, 1.5-2 mm long, cream, minutely tipped with purple; bases globose, smooth, pale cream. Pistillate flowers in a globose-cylindric cluster 5-7 mm long; ovaries globose, 1.5-2 mm long, cream, barely stained with purple apically; stigma white. Fruiting spike cylindric, 3-4.5 cm long, 2-2.5 cm wide; berries pyriform, 7-10 mm long, 3.5-4.5 mm wide. Germination unknown.
Diagnostic
Plant small. Inflorescences borne at ground level. Pale purple washed spathe-limb, bicoloured spathe-tube interior. Spadix less than ? as long as the spathe-limb, stoutly clavate. Odour sweet-oily.
Distribution
Syria, Lebanon, W Turkey.
Habitat
Garigue, Cedrus woodland, deciduous woodland.
Phenology
Flowering May to June, rarely into July.

Native to:

Lebanon-Syria

Arum gratum Schott appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Stevens, N. [2357], Turkey 51305.000 isotype No
Mathew [11129], Turkey 54457.000 No
Koenen, M. [s.n.], Turkey 55948.000 No
Drummond, D. [s.n.], Turkey K000400327 Yes
Drummond, D. [s.n.], Turkey K000400330 Yes
Drummond, D. [s.n.], Turkey K000400331 Yes
Schott, A.C.V. [s.n.], Lebanon K000400332 syntype Yes
Drummond, D. [s.n.], Turkey K000400328 Yes
Drummond, D. [s.n.], Turkey K000400329 Yes

First published in Syn. Aroid.: 11 (1856)

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.
  • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.
  • Güner, A. (ed.) (2018). Resimli Türkiye Florası (Illustrated Flora of Turkey) 2: 1-1054. ANG Vakf?/Nezahat Gökyi?it Botanik Bahçesi, Istambul.

Literature

CATE Araceae

  • Boyce, P.C. 1993. The Genus Arum. 196 pp.

Kew Backbone Distributions

  • Güner, A. (ed.) (2018). Resimli Türkiye Florası (Illustrated Flora of Turkey) 2: 1-1054. ANG Vakf?/Nezahat Gökyi?it Botanik Bahçesi, Istambul.

  • 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

  • Kew Science Photographs

    Copyright applied to individual images