SYSTEMATIC BOTANY

Species Delimitation and Phylogeny of Epithelantha (Cactaceae)

Vicki A. Funk–Recipient of the 2018 Asa Gray Award

Isodon hsiwenii (Lamiaceae: Nepetoideae), a New Species from Yunnan, China

Phylogenetic Placement of New Species with Fused Calyx Reveals Homoplastic Character in Eugenia (Myrtaceae)

Encyclia, Epidendrum, or Prosthechea? Clarifying the Phylogenetic Position of a Rare Amazonian Orchid (Laeliinae-Epidendroideae-Orchidaceae)

A New Subtribal Classification of Tribe Myrteae (Myrtaceae)

A Systematic Overview of the Floral Diversity in Myrteae (Myrtaceae)

Phylogenetics of Pinus Subsection Cembroides Engelm. (Pinaceae) Inferred from Low-Copy Nuclear Gene Sequences

Geometric Morphometrics Dismiss the Polymorphic Hydrocotyle quinqueloba (Araliaceae) from the Neotropics

Two New Species of Turnera (Passifloraceae s. l., Turneroideae) from Northeastern Brazil and Considerations on the Identity of T. pernambucensis

An Updated Synopsis of Adenocalymma (Bignonieae, Bignoniaceae): New Combinations, Synonyms, and Lectotypifications

A New Endangered Species of Fritzschia Cham. (Melastomataceae, Marcetieae) from Espinhaço Range, Minas Gerais, Brazil

Aspidosperma huberianum (Apocynaceae), a New Species from the Brazilian Amazon

Pennellia yalaensis (Brassicaceae: Halimolobeae), a New Species from the Andes of Northern Argentina

Chryselium, a New South American Genus Segregated from Helichrysum (Asteraceae, Gnaphalieae)*

A Spectacular New Species of Habenaria (Orchidaceae) from Southern Brazilian Amazon

Taxonomic Delimitation of Species Complexes: A Challenge for Conservation; First Steps with the Abarema cochliacarpos Complex

Aeschynomene chicocesariana, a Striking New Unifoliolate Legume Species from the Brazilian Chapada Diamantina and Its Phylogenetic Placement in the Dalbergioid Clade

Diversification of the North American Doellingeria-Eucephalus Clade (Astereae: Asteraceae) Inferred from Molecular and Morphological Evidence

Taxonomic Observations within Stellaria (Caryophyllaceae): Insights from Ecology, Geography, Morphology, and Phylogeny Suggest Widespread Parallelism in Starworts and Erode Previous Infrageneric Classifications

Microlicia longirostrata, a New Species of Melastomataceae from Goiás in Central Brazil

Asplenium simaoense (Aspleniaceae), a New Fern Species from Yunnan, China, Based on Morphological and Molecular Data

A New Distylous Waltheria L. (Byttnerioideae, Malvaceae) From the State of Bahia, Brazil

Brongniartia bicornuta (Leguminosae, Papilionoideae), a New Species from the Seasonally Dry Tropical Forests of the Balsas River Basin, México

A New Species of Eryngium (Apiaceae, Saniculoideae) from the USA

A New Species of Moquiniastrum (Asteraceae: Gochnatieae) for Brazil and Comments about the Genus

Morphological and Climatic Variability of Teosinte (Zea spp.) and Relationships Among Taxa

Mimosa cerifera, a New Threatened Species from the Pampa Biome, Southern Brazil

Two New Species of Prestonia (Apocynaceae) from Colombia, Ecuador, and Peru

Mycetia suedixieana (Rubiaceae), a New Species of Argostemmateae Endemic to the Philippines

A New Species and a New Record of Stegnogramma (Thelypteridaceae; Polypodiales) from Southern Vietnam

Solanum adamantium (Solanaceae), a New Narrowly Endemic Species from a Diamondiferous Region of the Espinhaço Range in Minas Gerais State, Brazil

Fritzschia atropurpurea (Melastomataceae, Marcetieae): A New Species from the Serra Do Cipó, Minas Gerais, Brazil

Taxonomic Revision of Chusquea subg. Magnifoliae and Chusquea subg. Platonia (Poaceae, Bambusoideae, Chusqueinae) in Peru

Monteiroa rubra (Malvaceae: Malvoideae), a New Species Endemic to the Southern Brazilian Grasslands

A New Species of Dichorisandra (Commelinaceae) with Speckled Leaves from Brazil

Systematics of Hymenophyllum subgenus Mecodium (Hymenophyllaceae) in Taiwan

A New Species of Araeococcus (Bromeliaceae) from Bahia, Brazil and a Comparative Morphological and Anatomical Analysis

A New Bernardia (Euphorbiaceae) with Stellate Trichomes from the Brazilian Cerrado

A New Species and Two New Records of Besleria (Gesneriaceae) from Brazil

Dalechampia margarethiae (Euphorbiaceae), a New Species from Southeastern Brazil

Polyphyly of Mesadenus (Orchidaceae, Spiranthinae) and a New Genus from the Espinhaço Range, Southeastern Brazil

Book Review

A Common but Overlooked New Species in the Hyper-Diverse Genus Inga Mill. from the Northwestern Amazon

Seed Morphology of Ruellieae Species (Acanthaceae) in Brazil and Its Taxonomic Implications