Flowering Plant Diversity in the Alpine Regions of Eastern Himalaya
Jayanta Kumar Patra, Gitishree Das, Sanjeet Kumar, Hrudayanath Thatoi in Ethnopharmacology and Biodiversity of Medicinal Plants, 2019
The survey of seven lakes and their margins in the Tawang district of Arunachal Pradesh, revealed a total of 106 flowering plant species, representing 68 genera and 32 families of angiosperms (Table 8.1, Figure 8.1). These are mostly herbs which dominate the alpine zone and shrubs which forms the permanent vegetation in the study area. Rhododendrons are the most prominent ones. Asteraceae appeared as the most dominant family represented by 20 species, and it was followed by Orobanchaceae (8 spp.). Plant family Gentianaceae, Ranunculaceae, and Orchidaceae are represented with six species each. No clear delimitations were observed on their range of distribution probably due to the narrow altitudinal range and of almost uniform environmental conditions. However, some plants like Senecio raphanifolius, Pedicularis siphonantha, Parnassia nubicola, etc. were common throughout, almost covering every corner of these lakes. On the other hand, some plants were restricted to specific lakes such as Galearis roborovskyi, Pegaeophyton scapiflorum, etc. Most of the plants were growing in the open ground except for few which were present under the rhododendron as like parasitic Boschniakia himalaica. Again, not a single species of aquatic angiosperms was found growing in these lakes.
Special problems of the homeless
John A. Liebert, William J. Birnes in Psychiatric Criminology, 2016
Ian Stawicki somehow communicated to his family that he had awakened one Wednesday morning in a uniquely good mood with plans to help his girlfriend's mother move into a new home in Tacoma. But first, he was going to stop for coffee. Stawicki's sunny mood was a welcome change for his family. The 40-year-old had been erratic, argumentative, and full of rage for years, but especially so recently, according to his father. His uniquely good mood had nothing to do with Seattle's being in full bloom, but, like all too many in the Pacific Northwest, the final decision had been made. Rejected from what may have been his only home—or maybe because he was always on guard because of his delusion of being an agent of the Central Intelligence Agency (CIA)—Stawicki was ready for his own mysterious fate. Breakfast guests were gone for jobs, leaving some regulars behind in the late midweek morning following Memorial Day weekend, 2012. It is a beautiful time in Seattle, because most everything that has flowers bursts into bloom out of the months of cloudy mist, with bright rhododendrons, magnolias, and azaleas. There is promise of a warm summer to come with the snowcapped mountains that ring the city beginning to pierce the seemingly perpetual overcast dome like ice cream cones.
Conservation – A Strategy to Overcome Shortages of Ayurveda Herbs
D. Suresh Kumar in Ayurveda in the New Millennium, 2020
Application of G.I.S. technology in predictive mapping was recently attempted by Bhandari et al. (2020). The population of Rhododendron arboreum Sm. is shrinking in the middle Himalayas due to low seed viability, poor regeneration, habitat fragmentation, habitat distortion and species invasion. The authors attempted to predict R. arboreum distribution in Uttarakhand using the MaxEnt model. The MaxEnt software is particularly popular in species distribution and environmental niche modeling, with over 1000 applications published since 2006 (Phillips et al. 2006; Merow et al. 2013).
An Investigation of the Antiproliferative Effect of Rhododendron luteum Extract on Cervical Cancer (HeLa) Cells via Nrf2 Signaling Pathway
Published in Nutrition and Cancer, 2022
Ibrahim Turan, Selim Demir, Serap Ozer Yaman, Deniz Canbolat, Ahmet Mentese, Yuksel Aliyazicioglu
The medicinal use of plants is as old as the history of humanity, and researchers are currently investigating the pharmacological properties of plants used for different purposes in traditional therapies by means of scientific data (9, 34). Rhododendron species are also considered medicinal plants, and identifying their biological activity has become a popular field of research in recent years (11). In studies investigating the biological activities of natural products, plant samples are first milled and pulverized. They are then extracted by means of various solvents, such as ethanol, DMSO, ethyl ether, water, methanol, hexane, and chloroform. Several methods, including maceration, sonication, soxhlet, and microwave extraction, are used to extract active components from natural products (7, 35). In the present study, R. luteum leaves were therefore first dried and powdered, and then extracted by maceration using DMSO as the solvent.
Investigation of genotoxic effects of rhododendron honey using three mammalian bioassays in vivo
Published in Drug and Chemical Toxicology, 2022
Pinar Goc Rasgele, Fulya Dilek Gokalp, Salih Tunc Kaya, Meral Kekecoglu, Merve Kambur Acar
Rhododendron honey known as ‘crazy honey,’ ‘bitter honey’ or ‘mad honey’ among local people was obtained from rhododendron species belonging to Ericaceae family. Frequently seen toxic rhododendrons in Turkey are R. luteum and R. ponticum. Anti-inflammatory (Rylski et al. 1979, Erdemoglu et al. 2003), anti-microbial (Usta et al. 2012), anti-protozoal and anti-viral (Tasdemir et al. 2004) effects of Rhododendron specieses were also domenstrated by many researches. Although its toxic effect on human and animals, RH is widely used among the population for diseases treatment as inflammation, toothache, skin disorders, edema, gastrointestinal disturbances and colds (Silici et al. 2014b, Tasdemir et al. 2004) Beside its medical therapeutic activity, Rhododendron species and honey obtained from those causes poisoning in humans and animals due to the GTX content of the nectar, pollen, flowers and leaves (Ascioglu and Ozesmi 1995, Koca and Koca 2007). Most of the studies have presented case reports in which toxic symptoms as dizziness, nausea, vomiting, weakness, blurred vision were observed from consuming RH (Ozhan 2004, Gunduz et al. 2008, Koseoglu and Kosenli 2009, Yaylaci et al. 2014, Erenler 2016, Silici et al. 2016).
Related Knowledge Centers
- Agglutination
- Morphology
- Ovary
- Phytochemical
- Ploidy
- Pollen
- Sequencing
- Species
- Fruit
- Internal Transcribed Spacer