Paralepistemon

Accepted name/Authority/Place of publication: 

PARALEPISTEMON Lejoly & Lisowski, Bulletin du Jardin Botanique National de Belgique 56: 196. 1986.

Tribe: 
Ipomoeeae
Type Species: 

Paralepistemon shirensis (Oliv.) Lejoly & Lisowski

Habit: 
Liana.
Leaves: 
Simple, petiolate; blade entire, ovate, base cordate
Inflorescences: 
Axillary, paniculate or umbelliform; bracts present, deciduous or persistent.
Flowers: 
Sepals 5, free, subequal, obovate, papery, accrescent in fruit. Corolla funnelform, base tubular, at apex of tube with 5 triangular scales, limb 5-lobed. Stamens included, unequal, inserted on scales; filaments glabrous, thread-like above insertion; anthers basifixed, lanceolate or subsagittate, apex acute. Pistil included; disc annular, 5-lobed; ovary 2-celled; style filiform, simple, glabrous, the base persisting in fruit as a beak; stigma biglobose.
Pollen: 
Sepals 5, free, subequal, obovate, papery, accrescent in fruit. Corolla funnelform, base tubular, at apex of tube with 5 triangular scales, limb 5-lobed. Stamens included, unequal, inserted on scales; filaments glabrous, thread-like above insertion; anthers basifixed, lanceolate or subsagittate, apex acute. Pistil included; disc annular, 5-lobed; ovary 2-celled; style filiform, simple, glabrous, the base persisting in fruit as a beak; stigma biglobose.
Fruits: 
Indehiscent, ± woody, apex shortly beaked, ± enclosed in accrescent calyx.
Seeds: 
1 per fruit, subglobose-triangular.
Distribution: 

Africa. map

Countries: 
Angola
Malawi
Mozambique
South Africa
Zambia
Zaire
Zimbabwe
Number of Species: 
2
Commentary: 

Segregated from Turbina and Ipomoea on morphological grounds by the presence of 5 enlarged scales within the corolla tube, on which the staminal filments are inserted. Molecular data have Paralepistemon and Turbina nested within Ipomoea.

References: 

Lejoly, J. & S. Lisowski. 1986. Paralepistemon, nouveau genre de Convolvulaceae. Bulletin du Jardin Botanique National de Belgique 56: 196. 1986.

Gonçalves, M.L. 1987. Convolvulaceae, fam. 117 In E. Launert (ed.), Flora Zambesiaca 8(1): 127–129.

Stefanovic, S., L. Krueger, R.G. Olmstead. 2002. Monophyly of the Convolvulaceae and circumscription of their major lineages based on DNA sequences of multiple chloroplast loci. Amer. J. Bot. 89(9): 1510–1522.

Author/Editor

Author: 
J. Lejoly (translated from French & Latin by G. Staples)
Editor: 
G. Staples & Esmond Er
Publication: 

Lejoly, J. & S. Lisowski. 1986. Paralepistemon, nouveau genre de Convolvulaceae. Bulletin du Jardin Botanique National de Belgique 56: 196. 1986.

Contributors: 
Classification: 
Paralepistemon
Tue, 2011-06-21 03:33 -- Esmond
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