Biarum rhopalospadix K.Koch

First published in Index Seminum (B, Berolinensis) 1853(App.): 12 (1853)
This species is accepted
The native range of this species is S. Greece. It is a tuberous geophyte and grows primarily in the subtropical biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: threatened. Confidence: confident
[AERP]

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

Habitat
Limestone-derived terra rossa in grazed fields, open hillslopes, abandoned olive groves and field margins.
General Description
Tuber dorsoventrally compressed-discoid, 1.5–3 × 1–1.5 cm, with few offsets, mid-brown. Leaves 3–5, hysteranthous, short-petiolate, bases encased by 3–4, 5–8 cm × 5–10 mm lanceolate, sub-fleshy, later papery, cataphylls, these mid-green drying to very pale green or creamy-white; petiole 3–5 cm × 2–3 mm, adaxial surface channeled distally, expanded proximally into a membranous wing, mid to rather dark green; leaf lamina oblong to oblong-spathulate, 5–11 × 1.5–2.5 cm, apex obtuse to sub-acute, base decurrent to cuneate, 5–6 primary lateral veins per side, margins smooth to slightly undulate, lamina mid-green. Inflorescence appearing in spring, moderately foetid of cattle dung. Peduncle 3–9 cm × 2–4 mm, encased by 2–4, 4–11 × 1–1.5 cm lanceolate, sub-fleshy, later papery, cataphylls, these mid-green drying to pale straw-yellow. Spathe 7–24 cm long; spathe limb oblong-lingulate to elliptic-oblong, 5–14 × 1–4 cm, acute to shortly acuminate, exterior green with dense purple-brown staining, especially towards the magins and apex, interior concolorous purple-brown, occasionally very slightly greenish distally; spathe tube narrowly cylindrical, slightly inflated, 3–5.5 cm × 7–9 mm, margins connate for ¾ of their length, exterior off-white below, purple-brown flushed above, interior white, slightly purple stained distally. Spadix sub-equal to shorter than the spathe limb, 8.5–14.5 cm long; appendix fusiform, ± sessile, though tapering in some specimens, 6–10.5 cm × 2 – 6 mm, deep purple. Staminate flowers in an oblong-cylindric zone 6–12 × c. 4 mm, cream. Interstice 11–25 × 3–4 mm, cream. Staminodes covering the proximal half of the interstice, recurved, falcate, pointed, 1.5–3 mm long, mostly simple but occasionally bifi d, cream. Pistillate flowers in a hemispherical cluster c. 5 mm wide, 3 mm high; ovary globose, slightly dorso-ventrally flattened, 0.25 mm wide and tall, cream; stigma . c. 0.25 mm in diam., borne on a 0.25–0.5 mm long style, stigma greyish, style purple. Infructescence not seen. 2n not recorded.
Distribution
S Greece, (Attica, Peloponnese).
Diagnostic
It may be readily distinguished by the lack of staminodes, the stigma borne on a short style, the narrow, parallel-sided spathe limb, and the considerably stouter spadix appendix.
[CATE]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0
  • 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 Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 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 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0