The herbarium at TAMUCC is perhaps the only one with more than 10,000 collections uniquely representing the flora of south Texas i.e. south of San Antonio and surrounding coastal areas. In addition, the herbarium has a good collection of marine vascular plants including seagrasses, marsh plants and black mangroves.

Taxonomic Coverage: Algae, bryophytes, fungi, pteridophytes, and angiosperms
Geography: South Texas i.e. south of San Antonio and surrounding coastal areas