February 22, 2025 – A remarkable discovery has added yet another gem to the biodiversity crown of Arunachal Pradesh. Researchers have identified a previously unknown plant species, Strobilanthes gigantra, in the lush Eastern Himalayas of this northeastern Indian state, showcasing the region’s rich ecological diversity.
Distinguished by its towering height and unique floral characteristics, Strobilanthes gigantra stands out as an extraordinary find. Unlike typical plants of its genus, this species can grow to tree-like proportions, making it a striking presence in its natural habitat. Its flowers feature densely overlapping bracts, a continuous inflorescence, a gently curved corolla tube, and distinctive wings on the staminal curtain—traits that set it apart from its relatives within the Acanthaceae family.
The discovery was made by a dedicated team led by Dr. Krishna Chowlu from the Botanical Survey of India (BSI), in collaboration with researchers from the Arunachal Pradesh Regional Centre in Itanagar and the University of Chinese Academy of Sciences. Their findings, detailed in the scientific journal Phytotaxa, highlight the plant’s significance as a new addition to the Strobilanthes genus, which boasts around 450 species worldwide, with 167 documented in India alone.
Arunachal Pradesh, a biodiversity hotspot in the Indian Himalayan Region (IHR), is already home to 41 known Strobilanthes species. The identification of S. gigantra underscores the state’s critical role in global botanical research. However, studying this genus poses challenges due to its monocarpic nature—plants flower only once in their lifetime before dying—making sightings and documentation a rare opportunity.
Chief Minister Pema Khandu hailed the discovery as a “testament to Arunachal’s ecological wealth.” In a statement, he congratulated Dr. Chowlu and her team, noting that the find not only enriches botanical knowledge but also emphasizes the need to protect the Eastern Himalayas’ fragile ecosystems. “This achievement reflects the untapped potential of our state and the importance of preserving its natural heritage,” he said.
The Strobilanthes genus has long fascinated botanists for its diversity and striking blooms, with species scattered across the Himalayas and Western Ghats. The addition of S. gigantra reinforces the urgency of continued exploration and conservation efforts in the IHR, a region that consistently reveals new facets of its flora.
As scientists delve deeper into Arunachal Pradesh’s wilderness, discoveries like Strobilanthes gigantra serve as a reminder of the wonders still hidden in India’s northeastern frontier, awaiting recognition and safeguarding for future generations.