The morphology and anatomy of the achene in certain species of sub-family Ranunculoideae (Ranunculaceae) with special reference to the achene vasculature | ||||
Taeckholmia | ||||
Article 3, Volume 20, Issue 1, 2000, Page 33-49 PDF (816.55 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/taec.2000.12475 | ||||
View on SCiNiTO | ||||
Authors | ||||
Magdy Mourad1; Karima Hamed2; Abd El-Salam Al- Nowaihi 3 | ||||
1Botany department, faculty of Science Ain Shams University, Cairo - Egypt | ||||
2Botany department, Faculty of Science Ain Shams University, Cairo – Egypt | ||||
3Botany Department, Faculty of Science, Ain Shams University, Cairo-Egypt. | ||||
Abstract | ||||
The achene in 17 species of the sub-family Ranunculoideae (Ranunculaceae) was morphologically and anatomically studied to show the variation patterns of these two parameters. The surface of the achene and the appearance of the style whether normal and plumose or in the form of a beak were found to be delimitrate to the taxa studied. SEM investigation of the pericarp showed that six types of surface sculpture were recorded and the reticulate type was sub-divided into six sub-types. Stress was laid upon the achene vasculature for suggesting a phylogenetic status for the studied taxa. It was concluded that less advanced taxa are those having increased number of vascular bundles (8-12 bundles). Intermediate taxa are those with three vascular bundles; one dorsal and two distinct ventral bundles. More advanced taxa are those with one dorsal and two fused ventral bundles. | ||||
Keywords | ||||
Achene anatomy; achene morphology; Ranunculoideae (Ranunculaceae) | ||||
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