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Issue: Vol. 774 No. 2: 15 Sept. 2026
Type: Article
Published: 2026-09-15
DOI: 10.11646/phytotaxa.774.2.8
Page range: 192-200
Abstract views: 44
PDF downloaded: 3

Clerodendrum ismaili (Lamiaceae), a new species from Bromo Tengger Semeru National Park, East Java, Indonesia

Herbarium Genbinesia; Generasi Biologi Indonesia Foundation; Jln. Swadaya Barat No. 4; Semampir; Cerme; Gresik 61171; East Java; Indonesia
Bromo Tengger Semeru National Park; Ministry of Forestry; Malang; East Java; 65126; Indonesia
Biology Program; Faculty of Science and Technology; Open University; Jl. Pd. Cabe Raya; Pd. Cabe Udik; Pamulang; Tangerang Selatan; Banten 15437; Indonesia
Research Center for Biosystematics and Evolution; National Research and Innovation Agency (BRIN); Bogor 16911; Indonesia
Eudicots Ajugoideae conservation assessment floral morphology gloryblower flower morphological taxonomy species delimitation

Abstract

Clerodendrum ismaili (Lamiaceae), a new species from Bromo Tengger Semeru National Park, East Java, Indonesia, is described and illustrated based on morphological evidence. The new species is characterized by its relatively large shrub habit, white flowers, entire leaf margins, rounded to truncate leaf bases, erect terminal thyrses, and villous corolla, together with several distinctive floral characters. Morphologically, it most closely resembles C. calamitosum, but differs in a combination of vegetative and reproductive characters, particularly habit, leaf margin, leaf base, inflorescence structure, and floral indumentum. Field observations indicate that C. ismaili has a geographically restricted distribution in the southern slopes of Mount Semeru and occurs within mountain forest habitat. Its restricted distribution and limited known population raise significant conservation concerns. Based on the available distributional and population data, a preliminary conservation assessment is provided following the IUCN Red List Categories and Criteria. A detailed description, diagnosis, phenology, distribution, habitat, notes on conservation status, and illustrations are provided to facilitate recognition of the new species.

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How to Cite

Santoso, H., Artaka, T., Ismy, H. & Sudarmono (2026) Clerodendrum ismaili (Lamiaceae), a new species from Bromo Tengger Semeru National Park, East Java, Indonesia. Phytotaxa 774 (2): 192–200. https://doi.org/10.11646/phytotaxa.774.2.8