Eminium Schott
  • Syn. Aroid.: 16 (1856) 


Notes: Distribution: N. Africa to C. Asia

General Description

HABIT : medium-sized, seasonally dormant herbs, tuber subglobose. LEAVES : 3-6 (-8). PETIOLE : sheath relatively long. BLADE : oblong-elliptic (E. lehmannii, E. regelii), linear- to auriculate-hastate, or pedatifid-pedatisect with lobes of posterior divisions held ± erect in a spiral on the twisted basal ribs; primary lateral veins of lobes pinnate, forming submarginal collective vein, higher order venation reticulate. INFLORESCENCE : solitary, appearing with leaves. PEDUNCLE : much shorter than petiole of subtending leaf, apex often greatly thickened. SPATHE : marcescent, tube with convolute margins, subventricose to oblong, blade oblong or ovate-oblong, erect, inner surface sometimes densely rugose-puckered. SPADIX : slender, much shorter than spathe, female zone short-cylindric, separated from male zone by longer zone bearing usually scattered sterile flowers, male zone ellipsoid to cylindric, shorter or equalling female, appendix usually relatively short, elongate-clavate, stoutly to narrowly cylindric, rugose or smooth. FLOWERS : unisexual, perigone absent. MALE FLOWER : 2-androus, anthers subsessile to sessile, connective slender, thecae oblong-ellipsoid, dehiscing by apical slit. POLLEN : presented in a loose, powdery mass, not extruded in strands, grains inaperturate, spherical or subspheroidal, medium-sized (mean 44 µm.; 15-20 µm in E. koenenianum), exine spinose. STERILE FLOWERS : composed of subulate, sometimes flattened, patent, straight to slightly curved processes. FEMALE FLOWER : ovary ellipsoid-obovoid, 1-locular, ovules 2, orthotropous, funicle short, placenta basal to subbasal, style short to inconspicuous, stigma hemispheric. BERRY : subglobose, 1(-2) seeded. SEED : obnapiform to subglobose, testa leathery, rugose, with large strophiole, embryo small, elongate, endosperm copious.

Diagnostic Description

Seasonally dormant tuberous geophytes; petiole sheaths relatively long; leaf blade oblong to deeply pedatifid with outermost lobes spiralling on twisted basal ribs, fine venation reticulate; peduncle often greatly thickened at apex; flowers unisexual, perigone absent; terminal sterile appendix of spadix sometimes rugose; placentation basal to subbasal. Differs from Typhonium in having infructescence borne at or below ground level, berries white to pale lilac, pericarp firm, not juicy; sterile zone between male and female zones covered entirely with subulate, sometimes flattened sterile flowers; also differs in Middle East and south central Asia range.

Habitat

Warm temperate and subtropical habitats in fields, savannas, semideserts, deserts; geophytes, stony or sandy ground, consolidated sand.

Distribution

N. Africa to C. Asia.

Distribution Map

 
  • Native distribution
Found in
  • Africa Northern Africa Egypt
  • Asia-Temperate Middle Asia Kazakhstan
  • Kirgizistan
  • Tadzhikistan
  • Turkmenistan
  • Uzbekistan
  • Western Asia Afghanistan
  • Iran
  • Iraq
  • Lebanon-Syria
  • Palestine
  • Sinai
  • Turkey

  Bibliography

  • 1 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.
  • 2 Gardens, K.""Royal Bot World Checklist of Selected Plant Families. (2008).
  • 3 Mayo, S.J., Bogner, J. & Boyce, P.C. The Genera of Araceae. (Royal Botanic Gardens Kew: 1997).

 Information From

CATE Araceae
http://araceae.e-monocot.org
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, 14 Dec 2011 . 17 Dec 2011.
  • A All Rights Reserved
  • B   http://creativecommons.org/licenses/by-nc-sa/3.0/
eMonocot
http://e-monocot.org
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
  • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
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