Grasses of Egypt

Ibrahim, Kamal M.; Hosni, Hasnaa A.; Peterson, Paul M.

doi:10.5479/si.19382812.103

Cited by 17 publications

(22 citation statements)

References 9 publications

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“…Widely distributed in the Mediterranean area to N and W Iran, Eritrea, tropical E Africa; introduced in S America, USA, S Africa and Australia into warm temperate regions (Hubbard 1970, Wickens 1976, Scholz 1998, Soreng 2003, Valdés and Scholz 2009, Ibrahim et al 2016.…”

Section: Distributionmentioning

confidence: 99%

Comparative morphometry as a diagnostic tool applied to species delimitation in the genus Gastridium P. Beauv. (Poaceae)

Scoppola

Cancellieri

2019

Nordic Journal of Botany

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Based on critical examination of both fresh and dried specimens and a morphometric analysis of herbarium specimens we performed a comparative study of the three closely related Gastridium (Poaceae, Tribe: Poeae, Subtribe: Agrostidinae) species G. ventricosum, G. phleoides and G. scabrum collected in Italy. The study aimed to provide new diagnostic tools to improve the taxonomy of the genus and confirm species delimitation. Variation in floral morphology in the three species was explored using seven quantitative and ten qualitative characters measured on 318 spikelets, both awned and unawned. Statistical methods, including principal components analysis (PCA) and non‐metric multidimensional scaling (NMDS), were used. Numerical analyses showed a general distinctness of spikelets and florets, consistent with the three studied species, and revealed among and within species variation patterns in both spikelet types. Accordingly, the most informative quantitative characters appeared to be the width and length of glumes and the length of awns, useful to distinguish G. phleoides which has the narrowest glumes and longer awns than the other species, while G. scabrum has the widest glumes. The most informative qualitative characters appeared to be the presence/absence of thick hairs or minute tubercles on the upper side of the lemma. The autonomy of the three studied species was confirmed. The taxonomic significance of the results is briefly discussed, and notes on the species distribution are included. Some nomenclatural and taxonomic notes on G. scabrum, of which literature still showed evidence of a general unawareness, are provided.

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Section: Distributionmentioning

confidence: 99%

Comparative morphometry as a diagnostic tool applied to species delimitation in the genus Gastridium P. Beauv. (Poaceae)

Scoppola

Cancellieri

2019

Nordic Journal of Botany

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“…A recent checklist including 73 nearendemics arranged alphapitically according to LAPG III (The Linear Angiosperm Phylogeny group) system (Haston et al 2009) and based on literature and database reviews. These resources include previous floras and available literature (Täckholm et al 1941, Täckholm and Drar 1950, 1969, Andrews 1950-1956, Townsed and Guest 1966-1980, Zohary 1966, 1987, Davis et al 1972-1982, Täckholm 1956,1974, Jafri and El-Gadi 1977-1988, Feinbrun-Dothan 1978, 1986, Collenette 1985,1999, Migahid 1988-1990, Boulos 1999-2009, El-Hadidi and Hosni 2000, Ahmed 2009, Shaltout et al 2010, and Ibrahim et al 2016. The following websites were also consulted to collect more information about the recorded plants: 1-Euro +Med plant base (http://ww2.bgbm.org/EuroPlusMed/query.as p).…”

Section: Methodsmentioning

confidence: 99%

Re-assessment of the near-endemic taxa in the Egyptian Flora

et al. 2018

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This paper aims to answer the following questions: 1-what is the actual number of near-endemic taxa in the Egyptian flora?, 2-what are the reasons and justifications for addition or exclusion of plants to or from the final list of near-endemic taxa?, 3-what are the conservation categories of near-endemic taxa according to IUCN?, 4-How can we make a red list of these taxa?, 5-what are the services and goods offered by near-endemic taxa?, and 6-what are the threats that impact these taxa most?. These aims are achieved through preparing a recent list for the near-endemic taxa and their habitats in the Egyptian flora. The lists were analyzed in terms of taxonomic diversity, life and sex forms, size structure, flowering activity, dispersal types, economic potential, threats and national floristic distribution, and IUCN categories. The total number of near-endemic taxa in the prepared recent list is 73, belonging to 58 genera and 28 families; and were recorded in 11 habitats. The life form represented most is the therophytes while the ballochores and pogonochores are the most represented dispersal types. There was a gradual increase in the frequency of the flowered taxa until reaching a maximum value from March to May, and then decreased again reaching a minimum value from August to January. Near endemics are distributed in Egypt and adjacent countries as follows: 39 taxa with Palestine, 19 with Libya, 8 with Saudi Arabia, 4 with Sudan, 2 with Jordan, and only one with Lebanon. Fifty-one taxa had a distribution in only one phyto-geographical region, while the remaining taxa had a distribution in two or more regions. All near-endemic taxa have at least one aspect of economic goods and exposed to at least one type of threats, where the most represented good was the medicinal uses, while over-collecting and over-cutting were the most represented threats. In this paper, 30 near-endemics were evaluated according to IUCN categories as follows: 12 endangered, 5 critically endangered, 4 extinct and 1 vulnerable, while 8 species are data deficient. In addition, 36 near-endemics were also evaluated in previous studies according to IUCN categories as follows: 15 endangered, 11 critically endangered, 7 vulnerable, 2 rare and 1 least concern.

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“…The main reference flora is the Flora of Egypt (Boulos, 1999(Boulos, -2009, complemented by the Grasses of Egypt (Ibrahim et al, 2016). Since these thorough works were published quite recently, there are no plans to prepare a new Flora.…”

Section: State Of Knowledgementioning

confidence: 99%

Seed germination requirements of Hypericum scruglii, an endangered medicinal plant species of Sardinia (Italy)

Porceddu

Sanna

Sara

et al. 2020

Botany

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Hypericum scruglii is an endangered endemic plant of Sardinia and the phloroglucinol compounds identified in this species have been reported to inhibit Human Immunodeficiency Virus activity. Seed banks are a genetic repository that effectively preserve taxa of conservation interest and they hold knowledge about the biology and germination eco-physiology of the taxa they preserve. The main goals of this study were to investigate the germination requirements of H. scruglii, to evaluate the seed viability after eight years of long-term conservation and to suggest an efficient protocol for germination. Seeds stored at -25 °C in the seed bank were tested at temperatures from 5 to 30 °C and 25/10 °C. Base temperature (Tb) and thermal time (θ50) for germination were estimated. H. scruglii seeds germinated over a wide range of temperatures, responding positively to high temperatures and 25/10 °C. Tb was estimated at 4.92 °C, and θ50 was estimated at 198.27 degree days. The high viability detected in seeds of H. scruglii allows us to suggest the use of seeds stored in a seed bank when fresh material for plant propagation is scarce. Our results provide new and useful baseline information for implementing conservation and multiplication strategies for this endangered medicinal plant.

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Grasses of Egypt

Abstract: s m i t h s o n i a n c o n t r i b u t i o n s t o b o t a n y • n u m b e r 1 0 3 Smithsonian Institution Scholarly PressSmithsonian Institution Scholarly Press

Cited by 17 publications

References 9 publications

Comparative morphometry as a diagnostic tool applied to species delimitation in the genus Gastridium P. Beauv. (Poaceae)

Comparative morphometry as a diagnostic tool applied to species delimitation in the genus Gastridium P. Beauv. (Poaceae)

Re-assessment of the near-endemic taxa in the Egyptian Flora

Seed germination requirements of Hypericum scruglii, an endangered medicinal plant species of Sardinia (Italy)

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