Abstract
The present paper provides detailed documentation and an updated inventory of cryptogamic type specimens (excluding Fungi) deposited in the Central National Herbarium (CAL), Botanical Survey of India, Howrah, West Bengal, India. As one of the oldest and most significant botanical repositories in South Asia, CAL houses a substantial collection of non-flowering plants that serve as critical nomenclatural references for Paleotropical and Oriental floristics. Our survey identified a total of 453 cryptogamic type specimens, comprising Algae (20), Bryophytes (66), Lichens (9), and Pteridophytes (358). Each entry was cross-referenced with protologues and original labels to verify its current nomenclatural status and typification category (e.g., holotype, paratype, isotype, or syntype). The collection includes historically significant materials from the 19th and 20th centuries, reflecting the intensive botanical explorations across Paleotropical and global regions. This cataloging effort aims to enhance the accessibility of these specimens for global taxonomic research and to provide a baseline for future revisionary studies and digitization initiatives. The data presented here underscore the pivotal role of the CAL herbarium in preserving the region\'s botanical heritage.