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Elgazzar, A., El -Husseini, N., Khafagi, A., Mostafa, N. (2020). Computer-generated Keys to the Flora of Egypt. 10. The Spineless Taxa of Asteraceae. Egyptian Journal of Botany, 60(1), 97-131. doi: 10.21608/ejbo.2019.13915.1327
Adel Elgazzar; Nahed El -Husseini; Azza Khafagi; Nashwa Abd Alla Mostafa. "Computer-generated Keys to the Flora of Egypt. 10. The Spineless Taxa of Asteraceae". Egyptian Journal of Botany, 60, 1, 2020, 97-131. doi: 10.21608/ejbo.2019.13915.1327
Elgazzar, A., El -Husseini, N., Khafagi, A., Mostafa, N. (2020). 'Computer-generated Keys to the Flora of Egypt. 10. The Spineless Taxa of Asteraceae', Egyptian Journal of Botany, 60(1), pp. 97-131. doi: 10.21608/ejbo.2019.13915.1327
Elgazzar, A., El -Husseini, N., Khafagi, A., Mostafa, N. Computer-generated Keys to the Flora of Egypt. 10. The Spineless Taxa of Asteraceae. Egyptian Journal of Botany, 2020; 60(1): 97-131. doi: 10.21608/ejbo.2019.13915.1327

Computer-generated Keys to the Flora of Egypt. 10. The Spineless Taxa of Asteraceae

Article 9, Volume 60, Issue 1, April 2020, Page 97-131  XML PDF (1.34 MB)
Document Type: Regular issue (Original Article)
DOI: 10.21608/ejbo.2019.13915.1327
Cited by Scopus (2)
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Authors
Adel Elgazzar email 1; Nahed El -Husseini2; Azza Khafagi3; Nashwa Abd Alla Mostafaorcid 1
1Department of Botany and Microbiology, Faculty of Science, El-Arish University, N. Sinai, Egypt
22The Herbarium, Botany Department, Faculty of Science, Cairo University, Giza, Egypt
3Botany Department, Faculty of Science, Faculty of Science, Al-Azhar University (Girls Branch), Cairo, Egypt
Abstract
FRESH and herbarium specimens of 158 species and infra-specific taxa belonging to 77 genera, including the newly recorded Helenium amarum (Raf.) H. Rock var. amarum, Pulicaria dysenterica (L.) Gaertn. and Orbivestus cinerascens (Sch. Bip) H.Rob., were assembled to represent the spineless members of the Asteraceae in the flora of Egypt. Morphological variations in the stems, leaves, capitula, phyllaries and achenes of every taxon were recorded comparatively as 83 characters with 195 character-states in a data matrix and subjected to analysis under the key-generating suit of computer programs DELTA. Of the 83 characters, 56 are binary, while the rest are ordered multi-states; measureable characters were categorized into the latter type to allow for possible variation in the value of the same character in different specimens of the same taxon. A conventional key to all taxa was obtained together with detailed and item descriptions. The detailed descriptions are too voluminous and only the key and item descriptions are provided. The item descriptions, in conjunction with the list of characters, can be used to re-synthesize the detailed descriptions and to reconstruct the original data matrix which can be manipulated to accommodate additional characters and/or taxa. The key and descriptions have a number of advantages over all of their predecessors.
Keywords
Asteraceae; DELTA; Egypt; Flora; Key; Morphology; Spineless taxa
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