@article { author = {Alfarhan, Ahmed and Al-Turki, Turki and Thomas, Jacob and Basahy, R.}, title = {Annotated list to the flora of Farasan Archipelago, Southern Red Sea, Saudi Arabia}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {1-33}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12388}, abstract = {An annotated list of vascular plants of Farasan group of Islands is presented. Flora of these islands, though not uniquein terms of species diversity or endemism, is important as it represents a transition point between the flora of EastAfrican countries and the Arabian Peninsula. The entire archipelago is an arid region with sparse vegetation. Most ofthe species, except mangroves and few other dominant perennials, are occasional annuals and not necessarily presentin all years. A total of 202 species of vascular plants have been reported in this study, of which 155 are dicots and 47are monocots. No endemic plant is, so far, collected from any part of the archipelago despite the region’s isolatednature. However, 14 species collected from these islands are not known in any other part of Saudi Arabia. Vernacularnames of popular species and keys for the identification of families, genera and species are also provided.}, keywords = {Angiosperms,Farasan Archipelago,Flora,Saudi Arabia}, url = {https://taec.journals.ekb.eg/article_12388.html}, eprint = {https://taec.journals.ekb.eg/article_12388_1eee9d31289699a6abb2ded085414402.pdf} } @article { author = {El-Tantawy, Hassan}, title = {The Nutritional Value of some Desert plants in Kuwait, Arabian Pennisula}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {35-45}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12389}, abstract = {The nutritional role of five desert plants in the diet of the inhabitants of Kuwait was investigated. Differentorgans of the five species (leaves, stems or the whole plants) were analyzed for mineral ion composition, amino acids,carbohydrates content, crude fat, crude fibres and crude protein: Rumex vesicarius, Malva parviflora, Suaedaaegyptiaca, Sonchus oleraceus and Cynomorium coccineum. The hydrolyzate of Sonchus oleraceus was found tocontain 17 amino acids and thus representing the most valuable species, also it contains large amount of crude fibres.All five plants contained eight essential amino acids. The parasitic species (Cynomorium coccineum) contained thehighest content of protein (28.67% dry weight) and large amounts of crude fat. High concentrations of Na wererecorded in Suaeda aegyptiaca (105.4mg / g oven dry weight). The levels of trace minerals detected constitute nohazardous effect on human health. Results indicated that edible desert plants of Kuwait could contribute usefulamounts of essential nutrients especially in poor countries.}, keywords = {Gynomorium,Malva,Nutritional Value,Rumex,Sonchus,Suaeda}, url = {https://taec.journals.ekb.eg/article_12389.html}, eprint = {https://taec.journals.ekb.eg/article_12389_6533dc8df7f1f6ed75f0a7735447b305.pdf} } @article { author = {El Hadidi, M. and El Naggar, Salah}, title = {Pollen Atlas of the Flora of Egypt 3. Taxa of Pteridophyta and Gymnospermae}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {47-54}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12390}, abstract = {The spore and pollen morphology of 15 species of Pteridophyta and Gymnospermae represented in the flora of Egyptis reported and described. These belong to four types: inaperturate (alete) with elaters (one species) and aperturatewithout elaters (14 species). The latter group comprises the monolete, trilete and polycolpate types. A key for theseparation of the pollen types and genera is provided. The pollen morphology in relation to taxonomy is brieflydiscussed.}, keywords = {Gymnospermae,Pollen morphology,Pteridophyta,spore morphology}, url = {https://taec.journals.ekb.eg/article_12390.html}, eprint = {https://taec.journals.ekb.eg/article_12390_09e65c5b0f49fed032bb07316e446a1b.pdf} } @article { author = {Haroun, Soliman}, title = {Cytogenetic relationships between some species of Setaria L.(Poaceae)}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {55-63}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12392}, abstract = {Mitotic karyotype structure, meiotic behavior, pollen characteristics and seed setting of six species of genus Setariawere investigated in six species of Setaria L. Setaria verticillata, S. italica, S.viridis and S. glauca were found diploid(2n = 18) and S. sphacelata and S. plaicatilis are tetarploids ( 2n = 36 ). Karyotype measurements of the diploidspecies, to some extent, reflect their genetic stability except S. italica. This species has the longest chromosomesamong the investigated species with degree of variation between chromosomes. A degree of variation was alsoobserved in the karyotype of tetraploids. Irregular meiosis, chain trivalents and univalents were observed in S. italicaand S. sphacelata. Other diploid species show regular meiosis. Tetraploids show various types of meioticchromosome associations. Tetraploids also showed large pollen compared with diploids. Pollen fertility and seedsetting of dipliod species are higher compared to that recorded for tetraploids.}, keywords = {Karyotype structure,Meiotic behaviour,Setaria}, url = {https://taec.journals.ekb.eg/article_12392.html}, eprint = {https://taec.journals.ekb.eg/article_12392_635e1ee6b3992f2fc67058b55160332e.pdf} } @article { author = {El-Husseini, Nahed and Shamso., Eman}, title = {Pollen Atlas of the flora of Egypt 5. Species of Scrophulariaceae}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {65-76}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12425}, abstract = {Light and scanning electron microscope study of the pollen grains of 47 species representing 16 genera ofScrophulariaceae in Egypt was carried out. Pollen grains vary from subspheroidal to prolate; trizonocolpate totrizonocolporate. Exine’s sculpture is striate, colliculate, granulate, coarse reticulate or microreticulate. Seven pollentypes are recognized and briefly described, a key distinguishing the different pollen types and the discussion of itssystematic value are provided.}, keywords = {Flora of Egypt,Pollen Atlas,Scrophulariaceae}, url = {https://taec.journals.ekb.eg/article_12425.html}, eprint = {https://taec.journals.ekb.eg/article_12425_2320a80adbd88947ce2e26d0e8aff78f.pdf} } @article { author = {Mussa, Sanaa}, title = {Studies on the weed flora associated with wheat (Triticum aestivum L.) I. Density, biomass and floristic composition of associated weeds.}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {77-89}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12426}, abstract = {The present investigation is concerned with the study of the weed flora associated with wheat, Triticum aestivum atQalubiya Governorate, about 25 km north east of Cairo, Egypt. The study extended from December 2000 to April2001. Field studies were carried out at 15 days time intervals, the average density, fresh weight and dry weight of theidentified weed species were estimated. The average of five quadrats (each of a square meter area) was obtained.Meanwhile, the average height of 20 individuals of wheat plants was regularly recorded. During the growing seasonof the crop, the prevailing temperature seemed to be appropriate for emergence of the annual winter weed seedlingssuch as Sonchus oleraceus, Cichorium pumilum, Avena fatua and others.The tremendous perennial, Convolvulusarvensis dominated throughout the growing season of the wheat crop. The floristic composition of the emergedseedlings was followed during the study period. The applied reduced tillage operation was carried out only once ( 51days after sowing ) throughout the crop growing season. This had its influence on the types of emerged species as wellas on their distribution along the field.}, keywords = {Biomass,Convolvulus arvensis,Floristic composition,reduced tillage}, url = {https://taec.journals.ekb.eg/article_12426.html}, eprint = {https://taec.journals.ekb.eg/article_12426_197312c685e1c02e967c50c1d01b7750.pdf} } @article { author = {Kamal El-Din, Marwah}, title = {Bombacoxylon owenii (Carr.) Gottwald from Gebel Shabraweet, Eastern Desert, Egypt}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {91-99}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12427}, abstract = {Bombacoxylon owenii (Carr.) Gottwald (Bombacaceae), was widespread in Egypt in ages ranging from Oligoceneto Quaternary. This is the first record of this species from Gebel Shabraweet. Comments on the distribution of allspecies of Bombacoxylon in the world are given.}, keywords = {Bombacoxylon,Fossil wood,Gebel Shabraweet,Oligocene,Wood anatomy}, url = {https://taec.journals.ekb.eg/article_12427.html}, eprint = {https://taec.journals.ekb.eg/article_12427_0f038f243c2fef29d0c93dcb32bd2ea2.pdf} } @article { author = {Mashaly, Ibrahem, and El Halawany, El-Said and Omar, Gehan}, title = {Floristic features of Damietta area in the north east Nile Delta, Egypt.}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {101-114}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12429}, abstract = {Floristic features of three habitat types in the Damietta Governorate namely: field crops, orchards and canal banks aredescribed. The study habitats include 171 species related to 128 genera, grouped under 44 families with Gramineaeattaining 36 species (21.05%), Compositae 21 species (12.28%) and Chenopodiaceae 15 species (8.77%), these arethe main families. The recorded species comprise 98 annual species (57.31%), 8 biennial species (4.68%) and 65perennial species (38.01%). The annual species are classified under three categories as follows: a) all year activeannuals (14 species, b) winter-spring active annuals (64 species) and c) summer-autumn active annuals (20 species).According to the life-form spectrum the recorded species are classified into: therophytes (60.23%),cryptophytes (22.22%), chamaeophytes (7.60%), hemicryptophytes (7.02%), nanophanerophytes (1.75%) andparasites (1.17%).The floristic analysis of the study area reveals that, the Mediterranean elements (mono, bi - pluriregional)include 81 taxa (47.36%), Cosmopolitan element 28 species (16.37%), Palaeotropical 22 species (12.68%) andPantropical 21 species (12.28%). These represent the major chorotypes. The other floristic categories are poorlyrepresented. This indicates that, the study area is obviously belong to the Mediterranean Territory with the enteranceof other elements to the area.}, keywords = {chorology,Damietta,Egypt,Flora,habitats,life forms}, url = {https://taec.journals.ekb.eg/article_12429.html}, eprint = {https://taec.journals.ekb.eg/article_12429_88b6c888fdea4b31d448f0c6030d1165.pdf} } @article { author = {Alwadie, Hussien}, title = {Ultrastructure of the pollen grains of Withania somnifera (L.) Dunal (Solanaceae), A study from Saudi Arabia}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {115-119}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12431}, abstract = {Light microscopy, scanning and transmission electron microscopy were used to study the morphology and theultrastructure of the pollen grains of Withania somnifera (L.) Dunal. Light microscopic examination revealed that thepollen grain is tri- or tetrazonocoplate, approximately as long as broad measuring 29-μm. Scanning electronmicroscopic observation showed that surface sculpture is scarbate-granulate. Ultrathin sections as examined bytransmission electron microscope showed that the pollen contained numerous starch grains, liped drops, endoplasmicreticulum and vesicles of dicotysomes. Two layers of pollen wall were also distinguished; the outer wall (exinedivided into ektexine and enexine as well as an inner layer (intine). The nutritive values of Withania pollen werediscussed. The importance of studying the ultrastructure of pollen grains as a new tool in plant taxonomy was alsodiscussed.}, keywords = {Pollen grains,Saudi Arabia,Ultrastructure,Withania}, url = {https://taec.journals.ekb.eg/article_12431.html}, eprint = {https://taec.journals.ekb.eg/article_12431_63e8da3f63acecda0dbe9541cdea3063.pdf} } @article { author = {Refai, Mahmoud and Abou-Salama, Usama and El-Saadawi, Wagieh}, title = {Contributions to the moss flora of the Egyptian Oases. 3. Bahariya Oasis}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {121-130}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12433}, abstract = {Ten moss species are reported for the first time from Bahariya Oasis (Western Desert of Egypt). Six ofthem belong to Bryum, two to Funaria and one each to Didymodon and Brachymenium. The number of mosses knownfrom the Libyan and Nubian Oases territories is raised from 29 to 34. Notes on habitats, reproductive structures andfruiting are given. Floristic comparisons showed more taxa in common with northern African countries and Sinai thanwith the Nile land.}, keywords = {Bahariya Oasis,Egypt,Mosses}, url = {https://taec.journals.ekb.eg/article_12433.html}, eprint = {https://taec.journals.ekb.eg/article_12433_4cef9177686383cc891f6cbaf6b17e7a.pdf} } @article { author = {Shaheen, Abdel-Samai}, title = {Taxonomic implications of seed coat characters in native and naturalized species of Solanum L.}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {131-141}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12435}, abstract = {A morphological and anatomical study of 50 samples of seeds representing nine native and naturalized species of Solanumwas carried out. Thirteen seed characters were defined on the basis of LM & SEM examination. The seeds showedconsiderable variations in shape, seed coat ornamentation, wax status and anatomical structure (presence of middle layerand shape and elongation of epidermal cells). Three groups (patterns) of seeds are distinguished: Group I include: Solanum sinaicum, S. virginianum, S. villosum, S. schimperianum and S. nigrum. Group II includes, Solanum eleagnifolium, S. coagulans and S. incanum while group III include S. forskalei. Seed surface features provide a useful basis fordistinguishing the studied species, which in some cases coincide with gross morphological characters of the species and inother cases they are not coinciding. Phylogenetic relationships can be based upon the number of layers of the seed coat andits sculpture.}, keywords = {anatomy,Endothelial cells,Morphology,Sculpture,seed coat,Solanum}, url = {https://taec.journals.ekb.eg/article_12435.html}, eprint = {https://taec.journals.ekb.eg/article_12435_48894876bd4f35cfa89dd9ff1fd56c13.pdf} } @article { author = {El- Saadawi, Wagieh and Youssef, Said and Kamal El-Din, Marwah}, title = {Fossil palm woods of Egypt. I- Palmoxylon aschersoni Schenk and P. libycum (Stenzel) Kräusel}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {143-153}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12437}, abstract = {Palmoxylon aschersoni and P. libycum, were described, based on investigation of specimens collected from new sitesin Egypt, these were compared with earlier finds and differences noted. Distribution of the two species in Africa andtheir affinities are given.}, keywords = {Palmoxylon aschersoni,P. libycum,Tertiary,Egypt}, url = {https://taec.journals.ekb.eg/article_12437.html}, eprint = {https://taec.journals.ekb.eg/article_12437_23748c0dc5ba40331ac5ca78190ca05f.pdf} } @article { author = {Al- Nowaihi, Abd El-Salam and Karakish, Eman and Ishak, Ishak and El Magly, Usama}, title = {Morpho-anatomical characters of spermoderm of certain species of Resedaceae and their contribution to the taxonomy of the family}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {155-176}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12438}, abstract = {The morphological and anatomical characters of the spermoderm of 27 species of Resedaceae were examined anddescribed to assess the applicability of these attributes in the process of identification. Many of the recordedmorphological and anatomical attributes were found to be fairly diagnostic at both the generic and specific levels.Unlike earlier claims that Reseda alba and R. decursiva are conspecific; the present data justify their treatment asdistinct species. A correlation was found between some of the studied characters.}, keywords = {Resedaceae,spermoderm}, url = {https://taec.journals.ekb.eg/article_12438.html}, eprint = {https://taec.journals.ekb.eg/article_12438_66e2bdb5ab9b53e5911cc8d86dd19454.pdf} } @article { author = {De Leonardis, Walter and De Santis, Carmelinda and Fichera, Girolamo and Padulosi, Stefano}, title = {Seed and pollen study of taxa belonging to the genus Eruca Miller in relation to some characters present in species of the genus Diplotaxis DC.}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {177-187}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12440}, abstract = {The authors analyzed the seeds and pollen of three taxa belonging to the genus Eruca Miller (E. pinnatifida (Desf.)Pomel f. aurea (Batt.) Maire, E. sativa Miller, E. vesicaria (L.) Cav. using OM and SEM. The study ofmorphobiometric data identified three morphotypes and an identification key was elaborated. The length of the polaraxis of the pollen grains and the length of the seeds represent the primary characters for distinguishing the taxa ofEruca and those belonging to the genus Diplotaxis observed in a previous study (De Leonardis et al., 2002). Furthercharacters are the thickness of the sexine (more accentuated in Diplotaxis) and the different disposition of the seedcoat reticulum. Moreover, based on the palynological and seminal characters found the close affinity between Erucavesicaria and E. sativa confirmed the systematic placing proposed by Tutin et al. (1964) who placed them in E.vesicaria (L.) Cav. ssp. vesicaria and E. vesicaria (L.) Cav. ssp. sativa (Miller) Thell. respectively. The two taxa hada greater affinity with respect to E. pinnatifida f. aurea that is nearer to the group of taxa belonging to the genusDiplotaxis as can be seen from the examination of the dendrogram.}, keywords = {Pollen,seed,Eruca,Diplotaxis}, url = {https://taec.journals.ekb.eg/article_12440.html}, eprint = {https://taec.journals.ekb.eg/article_12440_2910337e86481c8ed9969dbd114f3d95.pdf} } @article { author = {AL- Shehri, Abdul Rahman}, title = {Studies on the Bryoflora of Tanumah mountains, south-west Saudi Arabia}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {189-195}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12442}, abstract = {Eight mosses are reported from Tanumah Mountains, south-west Saudi Arabia. Two of them: Bryumpseudotriquetrum (Hedw.) Gaertn., Meyer & Scherb. and Hypnum cupressiforme Hedw. are described. The reportedmosses represent three floristic elements (sub) Cosmopolitan, Northern and circum-Tethyan.}, keywords = {Bryoflora,Mosses,Hypnum cupressiforme,Bryum pseudotriquetrum,Tanumah,Saudi Arabia}, url = {https://taec.journals.ekb.eg/article_12442.html}, eprint = {https://taec.journals.ekb.eg/article_12442_2b6a36ec363a77d1c9bfee807fe1ba28.pdf} } @article { author = {El Naggar, Salah}, title = {Gypsophila pilosa Hudson, a new species to the Flora of Egypt}, journal = {Taeckholmia}, volume = {22}, number = {1}, pages = {197-200}, year = {2002}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2002.12444}, abstract = {Gypsophila pilosa Hudson is recorded for the first time as a weed in recently reclaimed farmland east of Assiut town(Egypt). It was previously known from Libya, Palestine, Turkey and Iran. The occurrence of this species in the Nileland of Egypt fills the gap of its distribution between Palestine (Southwest Asia) and Libya (North Africa) andrepresents the southernmost limits of its global distribution.}, keywords = {Caryophyllaceae,Flora of Egypt,Gypsophila pilosa}, url = {https://taec.journals.ekb.eg/article_12444.html}, eprint = {https://taec.journals.ekb.eg/article_12444_3d30864203c997c89d6feed0765ae7ae.pdf} }