The lonely endemic Palni Hills Rudraksha Tree Elaeocarpus blascoi Weibel (Magnoliopsida: Malvales: Elaeocarpaceae), Tamil Nadu, India

Irudhayaraj, Dhanaraj Felix; Ramasubbu, Raju

doi:10.11609/jott.o4067.6473-6

Cited by 6 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While these have been reported in a few publications, details are incomplete or seem to have been omitted (Stewart & Balcar 2003, 2008Ramasubbu & Irudhayaraj 2016). Two publications claim rediscovery of the species (Vijayan et al 2011;Irudhayaraj & Ramasubbu 2014), indeed, of the exact same tree, though our efforts have previously been published (Stewart & Balcar 2003, 2008.…”

Section: Records Of Thementioning

confidence: 95%

Records of the Palni Hills Rudraksha Tree Elaeocarpus blascoi (Oxalidales Elaeocarpaceae) in Palni Hills, Tamil Nadu, India

Stewart¹,

Balcar²

2017

J. Threat. Taxa

View full text Add to dashboard Cite

Elaeocarpus blascoi is an endemic tree species reported only from the Palni Hills in the Western Ghats of Tamil Nadu. It was described from one tree in 1972, and was thought to be extinct till 1999. We had germinated an unidentified plant species in 1990, and this was later identified in 2001 as E. blascoi upon discovery of a mature tree in Vattakanal shola. We describe here the discovery of the mature tree and two of our plantings that have survived over the past 20 years. Our discovery and plantings have been written about in other publications but with partial information. In this note we list out all our experience with this species to provide clarity.

show abstract

Section: Records Of Thementioning

confidence: 95%

Records of the Palni Hills Rudraksha Tree Elaeocarpus blascoi (Oxalidales Elaeocarpaceae) in Palni Hills, Tamil Nadu, India

Stewart¹,

Balcar²

2017

J. Threat. Taxa

View full text Add to dashboard Cite

show abstract

“…Moreover, the phylogenetic relationship between Elaeocarpus species are poorly understood, and only a few molecular studies have been undertaken so far, with the number of loci and taxon sample being limited (Prasannan et al, 2020). In addition, some of the taxonomic studies carried out in the past (Irudhayaraj & Ramasubbu, 2014; Irudhyaraj & Ramasubbu, 2017; Meijer, 1995; Murti, 1993; Ramamoorthy, 1976; Ramasubbu & Irudhyaraj, 2016; Saldanha, 1984; Vijayan, 2017) had also assisted in the identification of the genus in the Indian subcontinent. However, problems of nomenclature, typification, species delimitation, and species identification, with many of these issues have been arising from the citation of incorrectly identified materials.…”

Section: Introductionmentioning

confidence: 99%

Comparative vegetative anatomy of three Elaeocarpus species from the Western Ghats, Southern India

Yuvarani

Karthik

Ravi

et al. 2022

Microscopy Res & Technique

View full text Add to dashboard Cite

The vegetative anatomy of Elaeocarpus angustifolius Blume, Elaeocarpus tuberculatus Roxb., and Elaeocarpus variabilis Zmarzty were investigated to illustrate anatomical variations. Plant materials were free-hand sectioned using a razor blade and stained with different staining solutions. The maceration technique was used to assess stomatal characteristics. Elaeocarpus leaves have abaxial epidermis with paracytic stomata and curved anticlinal walls in E. angustifolius, straight walls in other two species. Trichomes were absent in E. angustifolius.hav Mesophyll dorsiventral, midvein cortex contains starch grains, and vascular tissues enclosed by thick-walled sclerenchymatous cells. The petioles of all the three species possess unicellular epidermal hairs, collenchymatous hypodermis, and cortex containing druses and crystals, and vascular tissue enclosed by sclerenchymatous fibers. Water-storage cells are absent in petioles of E. angustifolius. Anatomical features of Elaeocarpus stem include epidermal hairs, epidermis covered by thin cuticle, the collenchymatous hypodermis and vascular integrity with entire cylinder enclosed by sclerenchymatous fibers. Pith contains water-storage cells. Starch grains absent in the pith cells of E. tuberculatus. The roots of Elaeocarpus possess unicellular root hairs, cortex 12-14 layered in E. tuberculatus and E. variabilis and 10-12 layerd E. angustifolius, Endodermis O-thickened and pericycle single-layered in all the examined Elaeocarpus species. Vascular bundles are arranged radially. Lignin deposition occurred in stellar region of roots. Water-storage cells present in the stelar regions of E. variabilis.The study revealed significant anatomical differences between the three Elaeocarpus species and most of these anatomical features may be used as markers for the identification of these species. Research Highlights• Comparative anatomy of three south Indian Elaeocarpus was studied.• Leaf mesophyll layers varied in all the Elaeocarpus species.• Crystals was present in petiole of all examined Elaeocarpus species.• Starch grains was absent in stems of E. tubercuatus, but present in E. variabilis.• Water-storage cells observed in stellar region of E. variabilis.

show abstract

“…Elaeocarpus blascoi Weibel is a medium-sized shola tree discovered by Blasco in 1970 from Bear shola of Palni Hills, TN and the species was scientifically described by Weibel 6 . It is a canopy tree growing up to 20 m in moist evergreen forests with short, young branches appearing grey with silky hairs and fallen leaf scars 7 . It was found to be extinct later during the exploration of flora of the Palni Hills 5 .…”

mentioning

confidence: 99%

“…Also, a medium-sized adult flowering tree has been planted on the roadside along with a small tree conserved in the NGO garden at Kodaikanal. Thus a total of only three individuals of E. blascoi are surviving at present in the world 7 . After the rediscovery of E. blascoi, no effective conservation strategies have been undertaken to increase their numbers, and this shows that the tree has been facing many problems in its regeneration.…”

mentioning

confidence: 99%

Reproductive Biology of Elaeocarpus blascoi Weibel, an Endemic and Endangered Tree Species of Palni Hills, Western Ghats, India

Ramasubbu

Irudhyaraj

2016

Current Science

View full text Add to dashboard Cite

show abstract

The lonely endemic Palni Hills Rudraksha Tree Elaeocarpus blascoi Weibel (Magnoliopsida: Malvales: Elaeocarpaceae), Tamil Nadu, India

Cited by 6 publications

References 2 publications

<b>Records of the Palni Hills Rudraksha Tree <I>Elaeocarpus blascoi</I> (Oxalidales Elaeocarpaceae) in Palni Hills, Tamil Nadu, India</b>

<b>Records of the Palni Hills Rudraksha Tree <I>Elaeocarpus blascoi</I> (Oxalidales Elaeocarpaceae) in Palni Hills, Tamil Nadu, India</b>

Comparative vegetative anatomy of three Elaeocarpus species from the Western Ghats, Southern India

Reproductive Biology of <I>Elaeocarpus blascoi</I> Weibel, an Endemic and Endangered Tree Species of Palni Hills, Western Ghats, India

Contact Info

Product

Resources

About