Abstract

Byttneria herbacea is a threatened and endemic species to Indian Peninsular region. It was earlier placed in Sterculiaceae and then a separate family Byttneriaceae. As per APG classification, it is now treated in family Malvaceae. Endemic taxa are usually more vulnerable to anthropogenic threats, natural and climate changes, and therefore hold a higher extinction risk. Taxonomic study on endemic taxa improves a basic understanding for correct identification and description. Habitat and distribution study are essential to get specific information and interpretation on current status and population dynamics of the taxon including niche requirements. It mainly contributes to several branches of applied biology. Frequent botanical exploration work was undertaken to collect the Byttneria herbacea in the forests of Peninsular India and it was identified with help of various Floras. The present study provides the information to Byttneria herbacea, which includes a detailed morphological description with data on its relevant taxonomic notes, illustration, current distribution patterns with distribution map, habitats, ecological note, population size, conservation status and threats to the selected species. The present study is the first-ever attempt at studying the taxonomic and habitat distribution aspects of Byttneria herbacea in the Indian Peninsular region. This study helps for long-term conservation and management plan of Byttneria herbacea for foresters and researchers.

Highlights

  • Byttneria Loefling, named after David Sigismund A.Byttner (1724-1768), a physician and botanist at the University of Gottingen, Germany [1]

  • As per Angiosperm Phylogeny Group-APG-IV [2] classification Byttneria is included in the family Malvaceae of Malvales clade

  • In independent Republic India, the genus Byttneria is composed of four species represented by B. andamanensis, B. aspera (Syn. grandifolia), B. herbacea and B. pilosa

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Summary

Introduction

Byttneria Loefling, named after David Sigismund A. As per Angiosperm Phylogeny Group-APG-IV [2] classification Byttneria is included in the family Malvaceae of Malvales clade. The Malvales clade includes Malvaceae, Tiliaceae, Bombacaceae, Bixaceae, Cistaceae, Cochlospermaceae, Diegodendraceae, Dipterocarpaceae, Mutingiaceae, Neuradaceae, Sarcolaenaceae and Thymelaeaceae [2,3,4]. Finding of Judd and Manchester [5], Alverson, et al, [6] and Bayer, et al, [4] has led to the proposal to combine Sterculiaceae, Bombacaceae, Malvaceae and Tiliaceae into a broadly defined Malvaceae family. Recent taxonomic treatments group taxa formerly included in “core malvales” in a broader concept of malvales. In independent Republic India, the genus Byttneria is composed of four species represented by B. andamanensis, B. aspera (Syn. grandifolia), B. herbacea and B. pilosa. Byttneria herbacea occurs in Western Peninsula, Karnataka, Orissa and Konkan [8,9]

Materials and Methods
Taxonomic Treatment
Habitat
Distribution Pattern of Byttneria herbacea
Discussions
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