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Holocene vegetation and climate records from Lake Sibaya, KwaZulu-Natal (South Africa)
Abstract The palynology of two overlapping Holocene cores from Lake Sibaya in KwaZulu-Natal elucidates the relationship between climate, vegetation and human impact in the region. By means ofExpand
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A tribal classification of the Periplocoideae (Apocynaceae)
The diagnostic features used to delimit genera are enumerated and critically analysed. Floral characteristics are important: shape and depth of the corolla tube, and positions of outer corona,Expand
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Pollinium structure in periplocoideae (apocynaceae)
The pollinium morphology of ten genera (Atherolepis Hook, f., Decalepis Wight & Arn.[=Baeolepis Decne., Janakia J. Joseph & V. Chandras.], Finlaysonia Wall., Gongylosperma King & Gamble, GymnantheraExpand
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Pollen morphology of Periploca (Periplocaceae)
The pollen morphology of all 13 species of Periploca L. was studied. All the species are characterized by pollen grains arranged in tetrads. The arrangement of the grains may be rhomboidal, decussateExpand
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A taxonomic revision of Ectadium (Periplocaceae)
A multidisciplinary approach was followed in this taxonomic revision of the genus Ectadium E. Mey. In addition to macromorphology, the leaf anatomy and pollen morphology were also studied and theExpand
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The ‘minor confusion’ around Parquetina nigrescens (Periplocaceae)
A correction of the taxonomy of Parquetina nigrescens (Afz.) Bullock with its synonyms Periploca nigrescens Afz. and Omphalogonus calophyllus Baill, is presented. Our investigation reveals thatExpand
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Pollen morphology of Petopentia and Tacazzea (Periplocaceae)
The pollen morphology of five species of Tacazzea Decne. and the monotypic genus Petopentia Bullock has been studied. All the species of the two genera are characterized by pollen grains arranged inExpand
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A new species of Cryptolepis (Periplocoideae, Apocynaceae) from Arabia
Abstract A new species of Cryptolepis from Yemen, Arabian Peninsula, C. yemenensis is described and figured. It is recognized by the glabrous appearance of the plant, oblong-elliptic to narrowlyExpand
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The genus Petopentia (Periplocaceae)
A taxonomic–morphological treatment of the monotypic genus Petopentia Bullock is presented. Petopentia natalensis (Schltr.) Bullock occurs in the subtropical southern African forests of Natal andExpand
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A taxonomic revision of Schlechterella K. Schum. is hereby presented. Two species are recognised, S. africana (Schltr.) K. Schum. and S. abyssinica (Chiov.) Venter & R.L. Verh. The latter species isExpand
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