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(A-E) Incomplete ultimate marginal venation. A) Dentate leaf margin in C. borneensis. B, C & E) Entire leaf margin in C. brachiata, C. corrifolia and C. suffruticosa. D) Subdentate leaf margin and cork warts (red arrow) present in C. euginioideae. (F-J) Areolar venation. F) C. borneensis with closed venation. G, H & I) C. brachiata, C. corrifolia, and C. eugenioidea with incomplete venation, branched endings and swollen veinlets. J) C. suffruticosa with incomplete, unbranched and unswollen areolar venation.
Source publication
A study on the leaf venation was undertaken on five species of Carallia; ie Carallia borneensis, C.
brachiata, C. corrifolia, C. eugenioidea and C. suffruticosa. Genus Carallia belongs to the family
Rhizophoraceae. In this study, priority has been given on the leaf venation characteristics. Method
used in this study is leaf clearing method. Objecti...
Contexts in source publication
Context 1
... in this study have shown that there are similarities and differences in leaf venation characteristics that can be useful in classification and identification of species in genus Carallia. Common character found in all species studied is an incomplete ultimate marginal venation ( Figure 1). The variation in the marginal leaf can be used to distinguish species ie; entire leaf margin in C. brachiata, C. corrifolia, and C. suffruticosa while dentate and sub-dentate in C. borneensis and C. eugenioidea respectively (Figure 1). ...
Context 2
... character found in all species studied is an incomplete ultimate marginal venation ( Figure 1). The variation in the marginal leaf can be used to distinguish species ie; entire leaf margin in C. brachiata, C. corrifolia, and C. suffruticosa while dentate and sub-dentate in C. borneensis and C. eugenioidea respectively (Figure 1). The areolar venation is incomplete, with branch-endings and swollen veinlets in all species studied except C. borneensis with closed areolar venation, and in C. suffruticosa with unbranched and unswollen veinlets (Figure 2). ...
Context 3
... areolar venation is incomplete, with branch-endings and swollen veinlets in all species studied except C. borneensis with closed areolar venation, and in C. suffruticosa with unbranched and unswollen veinlets (Figure 2). The cork warts at the marginal veinlets present only in C. euginioidea and definitely a diagnostic character for this species ( Figure 1D). Therefore, the results of this study have proved that the leaf venation has systematic significance for classification and identification purposes in the genus studied. ...
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A study on the leaf venation was undertaken on five species of Carallia; ie Carallia borneensis, C. brachiata, C. corrifolia, C. eugenioidea and C. suffruticosa. Genus Carallia belongs to the family Rhizophoraceae. In this study, priority has been given on the leaf venation characteristics. Method used in this study is leaf clearing method. Objecti...
Citations
... The ultimate marginal venation was incomplete and not looped in Grewia but complete and looped in all Microcos sp. A study by Nurshahidah et al. (2011) stated that the leaf venation can be used in identification of species and has systematic significance for the genus Carallia. The common anatomical character found in the genus Carallia was the incomplete marginal venation. ...
A study on some leaf anatomical characteristics was undertaken on two genera in Malvaceae s.l namely Byttneria L. and Pterocymbium R. Br. The objective was to determine the taxonomic value of leaf venation characteristics especially in identification and classification of species. In the study, five species were chosen, three Byttneria species, namely B. curtisii, B. jackiana, B. maingayi, and two Pterocymbium species, namely P. tinctorium and P. tubulatum. Byttneria and Pterocymbium have been split into two subfamilies, Byttneroideae and Sterculoideae, of Malvaceae s.l respectively. Leaf clearing, staining, mounting and observation under a light microscope were techniques used for the study. Results showed that the similarities and differences in leaf venation could be useful in classification and identification of species. The common characteristics found in all species studied were the presence of entire marginal venation and closed system venation with minimum free ending veinlets in the areolar venation. The variations in the leaf venation can be used to distinguish species, which are complete ultimate marginal venation in B. curtisii and B. maingayi; curved to looped pattern and incomplete, ultimate marginal venation in B. jackiana, P. tubulatum and P. tinctorium. The presence of simple unicellular trichomes in B. jackiana and two types of trichomes (simple unicellular trichomes and multicellular glandular trichomes) and crystals alongside veinlets in P. tubulatum can also be used to further identify these two species from other species studied. Therefore, the study showed that leaf anatomical characteristics in Byttneria and Pterocymbium can be used in species identification and have taxonomic value.
... The ultimate marginal venation was incomplete and not looped in Grewia but complete and looped in all Microcos sp. A study by Nurshahidah et al. (2011) stated that the leaf venation can be used in identification of species and has systematic significance for the genus Carallia. The common anatomical character found in the genus Carallia was the incomplete marginal venation. ...
A study on some leaf anatomical characteristics was undertaken on two genera in Malvaceae s.l namely Byttneria L. and Pterocymbium R. Br. The objective was to determine the taxonomic value of leaf venation characteristics especially in identification and classification of species. In the study, five species were chosen, three Byttneria species, namely B. curtisii, B. jackiana, B. maingayi, and two Pterocymbium species, namely P. tinctorium and P. tubulatum. Byttneria and Pterocymbium have been split into two subfamilies, Byttneroideae and Sterculoideae, of Malvaceae s.l respectively. Leaf clearing, staining, mounting and observation under a light microscope were techniques used for the study. Results showed that the similarities and differences in leaf venation could be useful in classification and identification of species. The common characteristics found in all species studied were the presence of entire marginal venation and closed system venation with minimum free ending veinlets in the areolar venation. The variations in the leaf venation can be used to distinguish species, which are complete ultimate marginal venation in B. curtisii and B. maingayi; curved to looped pattern and incomplete, ultimate marginal venation in B. jackiana, P. tubulatum and P. tinctorium. The presence of simple unicellular trichomes in B. jackiana and two types of trichomes (simple unicellular trichomes and multicellular glandular trichomes) and crystals alongside veinlets in P. tubulatum can also be used to further identify these two species from other species studied. Therefore, the study showed that leaf anatomical characteristics in Byttneria and Pterocymbium can be used in species identification and have taxonomic value.
