[Botany • 2025] Begonia Brunneosquamata (Beguoniaceae, Sect. Jackia) • A new species of limestone karsts in the province of Bolikhamxai, Central Laos

Abstract

Begonia Brunneosquamata, to striking New species Here is described here in the Karst limestone region of the province of Bolikhamxai, Central Laos. It looks like B. Tatianae in being a rhizomatous plant with suborbicular leaves, staminated flowers of 4 tepalized and a cygomorphic Androecio. However, the new species differs significantly from B. Tatianae In several key morphological characters: petioles and inflorescences are densely covered with brown -shaped brown trichomes (vs. glabrous), the anther apex is mucronate (vs. truncated), the pistilate flowers carry five warm (vs. four), and the ovary and the styles of ovary styles of ovary ovary (Vs. vs. ovary ovaries of ovary. and glabrous styles). Based on data currently available, B. Brunneosquamata The endangered category is assigned (EN), following the guidelines to use the categories and criteria of the IUCN red list.