Recently published in PhytoKeys, this study provides a new understanding of the relationships between various plant species within this diverse group.

Demeulenaere led the chapter dedicated to the Archidendron clade, building upon her Ph.D. research on the Serianthes genus and closely related species. The research was also published in PhytoKeys in 2022, under the guidance of dissertation chair, Stefanie Ickert-Bond, Ph.D.

The Serianthes, known as håyun lågu in Guam and tronkon guåfi in Rota, belongs to the Archidendron clade under Caesalpinioidea. A clade refers to a group of plants with related characteristics and a common ancestor with all its descendants.

Demeulenaere’s contribution particularly highlights the traditional uses of Serianthes, an ecologically and culturally significant species for Guam and region.

“I took the opportunity to list the traditional uses related to the Serianthes genus important to Micronesia and clarified that, although the same species occurs on Guam and Rota and another on Palau and Yap, each has its own indigenous plant name,” she explained.

Demeulenaere added that this aspect underscores these plant species' cultural significance and practical applications within local communities.

Demeulenaere collaborated with 48 authors from 41 institutions around the globe on the monograph, which was published earlier this year. Along with Demeulenaere, Ickert-Bond also contributed to the monograph.

“It’s an honor to have collaborated with an incredible group of researchers on this monograph,” Demeulenaere said.

Caesalpinioidea is a diverse subfamily of legumes consisting of approximately 4,680 species. Members of this subfamily often have unique floral structures and are found in a wide range of habitats worldwide.

The Caesalpinioidea subfamily includes a variety of trees, shrubs, and herbs known for their economic and ecological importance. Other species belonging to the Caesalpinioidea are the tamarind tree, the flame tree, and the acacia tree.

The recent monograph not only establishes a new classification for the Caesalpinioidea but also includes distribution maps, an identification key, and detailed morphological descriptions covering the species’ various growth forms, foliage, flowers, and fruits.

According to Demeulenaere, reclassification is important because it helps botanists understand the relationships between plants, in this case based on genomic data, which is essential for conservation and recovery efforts.

PhytoKeys serve as an essential resource for researchers, conservationists, and anyone interested in the biodiversity of the Archidendron clade and Caesalpinioidea.

The scientific paper on the Caesalpinioidea and Serianthes is available for download from PhytoKeys here. For Demeulenaere’s research on the Serianthes, download here and here.