Family:
Araceae Juss.
Genus:
Arum L.

Arum purpureospathum P.C.Boyce

This species is accepted, and its native range is SW. Kriti.

[CATE]

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

Habitat
In short grass and among large stones, rarely on bare rocky hillsides or in garrigue.
Phenology
Flowering March to April.
Diagnostic
Spathe-tube interior uniformly deep purple; Spathe-limb deep purple on both surfaces. Long-stipitate clavate spadix-appendix. (similar to Arum cyrenaicum)
General Description
Tuberous herb sprouting in early to mid-autumn from a discoid, vertical tuber 4-7 cm across, 2-3 cm thick. Petiole D-shaped in cross-section, 12-20 cm long, 3-5 mm wide, deep green longitudinally streaked with purple, the basal ? stained with the same colour. Leaf- blade sagittate-hastate, apex acute to rounded, 14-22 cm long, 11-17 cm wide, light to mid-green, glossy. INFLORESCENCE smelling weakly of horse-dung. Peduncle shorter than the leaves, terete, 12-15 cm long, 5-6 mm wide, upper half mid-green with purple streaks, lower half purple. Spathe 23-30 cm long; spathe-tube oblong-cylindric, 5-7 cm long, 1.75-2.5 cm wide, tapering and constricted apically, exterior mid-green longitudinally striped with purple, and stained with purple above, interior uniformly deep purple; spathe-limb broadly lanceolate, 18-23 cm long, 5-9 cm wide, erect apart from the apical 3-4 cm which droops forward, long-acuminate, externally deep green basally, remainder deep purple, shiny, internally mid-purple or dull to deep bright purple, ± lustrous, rarely somewhat matt. Spadix ? - ½ as long as the spathe limb, 6-12.5 cm in total length; appendix clavate-cylindric, long-stipitate, obtuse, 3-5 cm long, 2.5-5 mm wide, black-purple. Staminodes in 3 whorls forming a zone 3-8 mm long; bristles filiform, flexuous, 6-11 mm long, pale mauve; bases conic, verrucate, deep purple, occasionally paler. Interstices : upper 3-6 mm long, longitudinally ridged, black-purple to cream; lower 1-3 mm long, cream, with scattered rudimentary and ± fully developed staminodes. Staminate flowers in a quadratic zone 4-7 mm long, 5-9 mm wide; anthers black-purple, connectives whitish cream. Pistillodes in c. 3 whorls forming a zone 3-5 mm long; bristles filiform, flexuous, 9-10 mm long, pale mauve; bases elongate-pyriform, smooth, black-purple. Pistillate flowers in a cylindric cluster 15-20 mm long, 7-10 mm wide; ovaries barrel-shaped, 2.5-3.5 mm long, pale green with a cream apex; stigma cream tinged with brown. Fruiting spike oblong-cylindric, 6.5-8 cm long, 2.5-3 cm wide; berries pyriform 6-11 mm long, 5-6 mm wide. Germination epigeal.
Distribution
Greece (SW Crete).

Native to:

Kriti

Arum purpureospathum P.C.Boyce appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Jun 18, 1986 Boyce, P. [51], Kriti K000400286 Yes
Boyce, P. [51], Kriti 29047.633 Unknown type material No
Boyce, P. [51], Greece 51280.000 Unknown type material No
Boyce, P. [51], Greece 59028.000 No
Boyce, P. [51], Kriti K000400285 Unknown type material Yes

First published in Aroideana 10: 8 (1987)

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.

Literature

CATE Araceae

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

  • 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