Journal of the Botanical Research Institute of Texas

Index to new names and new combinations and typifications in J. Bot. Res. Inst. Texas 20(2), 2026

Craig Meyer — 2026-06-17

Index to new names and new combinations and typifications in J. Bot. Res. Inst. Texas 20(2), 2026

Two new species of Besleria (Gesneriaceae) from the Cordillera Occidental in the Colombian Andes

John L. Clark — 2026-06-17

Exploratory field expeditions and herbarium research have led to the discovery of Besleria bullata Clavijo & J.L. Clark, sp. nov. and Besleria nigra J.L. Clark & Clavijo, sp. nov. in the flowering plant family Gesneriaceae. The new species are distinguished from morphologically similar congeners and illustrated with field images. Both species are endemic to the western slopes of the Cordillera Occidental in the Colombian Andes.

Passiflora veronesiae (Passifloraceae), a new species from the Andean–Amazonian transition of southeastern Ecuador and northern Peru

J.R. Kuethe — 2026-06-17

Passiflora veronesiae sp. nov. is described and illustrated as a new species from the Andean-Amazonian transition of southeastern Ecuador and northern Peru. The new species belongs to Passiflora subg. Passiflora, supersect. Stipulata, and is morphologically allied to species of ser. Menispermifoliae, especially P. menispermifolia and P. deltoifolia. It is distinguished by the combination of a dense golden hirsute indumentum, petioles bearing 7–9 cupiform glands distributed along its length, leaves that are entire to shallowly 3-lobed with lobation, when present, initiated above the middle of the blade, narrowly ovate lanceolate bracts, and pink to magenta perianth and corona elements. A taxonomic key to the most similar species is provided. Based on georeferenced records, a preliminary conservation assessment is proposed.

In Memoriam Barbara R. MacRoberts (30 June 1942–10 April 2026)

Lynn Jackson — 2026-06-17

In Memoriam Barbara R. MacRoberts (30 June 1942–10 April 2026)

Annual Review of Ecology, Evolution, and Systematics, Volume 56

Barney Lipscomb — 2026-06-17

The Annual Review of Ecology, Evolution, and Systematics covers significant developments in the fields of ecology, evolutionary biology, and systematics, as they apply to all life on Earth. Essay reviews cover topics ranging from phylogeny, speciation, and molecular evolution through behavior and evolutionary physiology to population dynamics, ecosystems processes, and applications in invasion biology, conservation, and environmental management.

A report on the seventh botanical nomenclature course organized by the Botanical Survey of India at Hyderabad, Telangana, India

Kanchi N. Gandhi — 2026-06-17

A report on the seventh botanical nomenclature course organized by the Botanical Survey of India at Hyderabad, Telangana, India

A report on the second botanical nomenclature course organized by the Department of Botany, Bangalore University, Bengaluru, India

Kanchi N. Gandhi — 2026-06-17

A report on the second botanical nomenclature course organized by the Department of Botany, Bangalore University, Bengaluru, India

Distribution and establishment of Lycoris radiata var. radiata (Amaryllidaceae) in the Arkansas (U.S.A.) flora

Brett E. Serviss — 2026-06-17

Naturalized Lycoris radiata var. radiata was not well-studied in Arkansas prior to 2024, and as a result, the species was known outside of cultivation only from Clark, Ouachita, and Drew counties, and equivocal as to how this sterile, triploid taxon establishes wild populations in the state. Field work in southern and western Arkansas during 2024 and 2025, focusing on the occurrence and establishment ecology of L. radiata var. radiata, yielded 16 additional county records of naturalized plants and a putative mechanism facilitating establishment in the flora. While many of the escaped/naturalized occurrences of L. radiata var. radiata are tied directly to source pools of cultivated plants, some instances are more remote, indicating that one or more propagule dispersal mechanisms exist. We propose a mechanism of naturalization from asexual production of bulblets and their migration toward the surface of substrate — exposed bulblets at the soil surface then provide opportunity for separation from the parent colony and subsequent dispersal via multiple vectors, primarily water movement, to remote locations for establishment.

The genus Phyllostachys (Poaceae, Bambusoideae) in the Arkansas (U.S.A.) flora

Brett E. Serviss — 2026-06-17

Previously, the genus Phyllostachys was not well-studied in the Arkansas flora and only P. aurea was known from the state in the naturalized condition. Field work in 2025 by the authors in central and western Arkansas has increased the known distribution of P. aurea and documented the first occurrences of three additional species of Phyllostachys: P. aureosulcata, P. bambusoides, and P. nigra outside of cultivation. Whereas P. bambusoides and P. nigra are infrequent (known from 2 and 1 county, respectively), P. aureosulcata has a more wide-spread distribution in Arkansas, where it is documented from several counties. Phyllostachys aureosulcata and P. aurea are similar morphologically and easily confused without close examination, which may explain why P. aureosulcata remained undetected in the state’s flora until now. Keys to identification of Arkansas Phyllostachys species and morphologically similar taxa, diagnostic and habitat photographs, current state distributions, and notes on their ecology and invasiveness are provided.