Passiflora clypeophylla , an endemic species to the Guatemalan karstic forests last seen in 1889 and deemed extinct, was rediscovered in the Department of Alta Verapaz, east of Cobán. The species was known only from a single specimen hailed from the type locality, Rubel Cruz, where it has been found again. An additional location has been identified in a similar habitat near it. The current study further presents a revised morphological description of P. clypeophylla based on this new material, along with notes on its ecology and preservation. Though now known from two populations, the IUCN Red List Criteria classify P. clypeophylla as ‘Critically Endangered' (CR).

Molecular phylogenetic studies have prompted substantial revisions in the systematics of the former genus Abarema , resulting in the reinstatement of the genera Punjuba and Jupunba , and a re‐circumscription of Abarema . Despite these advances, some taxa still require nomenclatural adjustments to reflect monophyletic lineages. Here, we propose a new transfer from Abarema to Jupunba ( Jupunba levelii ) and propose Abarema agropecuaria as a new synonym of Jupunba floribunda . We also discuss additional names and taxa that remain in uncertain nomenclatural and systematic positions.

Pouzolzia peteri , a lesser‐known species from the African continent, is currently classified as a member of the genus Pouzolzia . However, based on the morphological characteristics of its male flowers and leaf venation, its transfer to the genus Gonostegia is proposed.

A new species of Arisaema Mart . (Araceae) belonging to sect. Fimbriata is described and illustrated here from the Siaha District, Mizoram, India. This new species is characterized by an evergreen, dioecious herbaceous habit, up to 1.08 m high, having a subglobose tuber, with a solitary trifoliate leaf. The characteristic spadix appendix is 15–21 cm long, pendulous, whip‐like, and exserted, bearing dense, filiform, brownish‐green 3.5–5.8 cm bristly projections. This new species belongs to the ‘ Fimbriata ' section under Arisaema and the allied species are Arisaema nonghinense , Arisaema tsangpoense , and Arisaema lihengianum .

In this article, we describe a new fungal species, Leucocoprinus roseus , collected in Canal View Park, District Mandi Bahauddin, Punjab, Pakistan. The species is proposed as new based on detailed morphological observations and molecular phylogenetic analysis using nuclear ribosomal DNA internal transcribed spacer (nrITS) sequences. In a phylogenetic reconstruction, L. roseus forms a distinct clade clearly separated from related taxa. It is characterized by small basidiomata, a plano‐convex pileus with dark red center becoming pale reddish toward the margins, center covered with squarrose scales, broadly ellipsoid amygdaliform basidiospores and versiform cheilocystidia. A comprehensive description, illustrations, and results of the phylogenetic analysis are provided, along with a comparison with morphologically and genetically related species.

In 2019, A. J. Paton et al. proposed a new taxonomic combination, transferring Anisochilus carnosus (L.f.) Wall. ex Benth. to Coleus strobilifer (Benth.) A.J.Paton, and including Anisochilus eriocephalus Benth. within this broader circumscription. However, a recent comprehensive study conducted in Tamil Nadu, India, re‐evaluated species within Anisochilus using an integrative approach. This study deployed various kinds of data, including leaf epidermal morphology, seed structure, pollen characteristics observed through scanning electron microscopy (SEM), and molecular data derived from sequencing the trn L‐ trn F, rbc L, and mat K regions. The results revealed clear morphological and genetic distinctions between A. eriocephalus and A. carnosus . Specifically, A. eriocephalus is characterized by a terete, glabrescent stem (in contrast to the tetragonal, pubescent stem of A . carnosus ), yellow gland‐dotted leaves, calyx, and corolla (versus red gland‐dotted in A. carnosus ), and the presence of gland‐tipped trichomes on the lower lip of the corolla (as opposed to simple trichomes). Additionally, the calyx tube in A. eriocephalus is villous, whereas it is pubescent in A. carnosus. Pollen morphology further differentiates the two species: A. eriocephalus exhibits finely reticulate grains with shallow colpi, while A. carnosus displays coarsely reticulate grains with deep colpi. Molecular phylogenetic analysis validated these findings, confirming significant genetic divergence between the two taxa. In light of these results, we propose a revised taxonomic treatment, reinstating A. eriocephalus under the genus Coleus as Coleus eriocephalus (Benth.) Soosairaj.

In this paper, Sedum zhenghaianum sp. nov. is described as a new species based on morphological and molecular analyses, and its taxonomic relationships are discussed. Morphological analysis indicates that S. zhenghaianum should be classified in the genus Sedum sect. Sedum and is distinct from the related species S. tosaense in morphology, e.g. by lacking sterile stems, rosulate leaves 4‐whorled, leaf blade and sepal apices retuse or obtuse, flowers pedicellate, ventral suture of follicles with a wing‐like membranous structure, and seeds with auricled protrusions. Phylogenetic analysis of sequences of the nuclear ribosomal internal transcribed spacer (ITS) further demonstrates that S. tosaense is the closest extant relative of the new species.

This study reports for the first time a checklist of native vascular plants and provides a comprehensive analysis of the flora of the Redberry Lake Biosphere Region (RLBR) in the province of Saskatchewan, Canada. To complete an inventory of the regional flora, I conducted intensive field investigations during 2010–2025 and employed detailed examination of herbarium collections, databases, and literature sources . Here, I analyse the recorded vascular plants by their taxonomy, origin, growth forms, habitat affinities and conservation status. The native flora includes 584 taxa (433 species, 64 subspecies and 87 varieties), of which 369 taxa were recorded for the first time. The observed vascular plants belong to 95 families and 300 genera. The ferns and fern allies include 15 taxa, gymnosperms 5 and angiosperms 564. This high species richness accounts for 42.1% of the native flora of Saskatchewan. The checklist containes 46 rare taxa (31 species, 5 subspecies and 10 varieties), i.e. 7.9% of the regional flora are at risk at the subnational (provincial), national, and global levels. This checklist will serve as a baseline for continued exploration of the floristic diversity of the biosphere region, particularly the newly acquired areas that remain understudied botanically. The status of the RLBR as the only UNESCO biosphere region in Saskatchewan makes these floristic findings particularly important, bettering our baseline understanding of its ecosystems. Continued floristic study will doubtlessly reveal more plant species, inform conservation efforts, and assist the local community in the management of this biosphere region.

This study provides a comprehensive assessment of Marcgraviaceae species diversity north of the São Francisco river in northeastern Brazil, analyzing species richness and distribution patterns across 384 000 km² of phytogeographic domains. Through field collections, herbarium studies (both physical and digital), and detailed morphological analyses, we evaluated the family's diversity. Specimen examinations included in situ observations and morphological descriptions verified against specialized taxonomic literature. We documented four species: Marcgravia coriacea Vahl, Norantea guianensis Aubl., Schwartzia brasiliensis (Choisy) Bedell ex Gir.‐Cañas, and Souroubea guianensis Aubl. Our research establishes new distribution records for M. coriacea , N. guianensis , and S. guianensis within the study area, with N. guianensis representing the first recorded occurrence in Pernambuco state. The highest species richness was found in Atlantic Forest fragments, underscoring their conservation importance. Despite these findings, limited collection efforts and few specialists continue to constrain accurate national‐level assessments of Marcgraviaceae. This study substantially advances understanding of Marcgraviaceae diversity and provides crucial data for conservation policy development, particularly for data‐deficient species.