Kew Bulletin最新文献

Olearia exilis S.Moore var. subacuta J.Kost. is considered conspecific with Olearia dibrachiata D.J.N.Hind & R.J.Johns following a re-examination of both Koster’s protologue diagnosis and its type (and paratype) material.

Salvia sect. Angulatae and S. sect. Nobiles are among the sections of Salvia L. (Lamiaceae) with most of their Brazilian species represented in the Atlantic Forest and the Cerrado domains, which are important regions of species richness for the genus. After extensive evaluation of the literature, populations in situ and specimens in herbaria, including nomenclatural types, we identified a requirement for taxonomic and nomenclatural changes in S. arenaria and S. sellowiana, and for updated identification keys and taxonomic notes for the other members of these sections, particularly S. rivularis in S. sect. Nobiles. Two names are synonymised, Salvia articulata = S. sellowiana and S. itatiaiensis = S. arenaria and notes on the nomenclature and morphology of these species are provided. A first-step lectotypification (S. arenaria var. sellowii) and a second-step lectotypification (S. itatiaiensis) are also presented, as well as detailed descriptions for S. arenaria and S. sellowiana and preliminary conservation status assessments for both.

A short visit to four Colombian herbaria in 2022 is highlighted as an example of modern-day herbarium plant hunting which resulted in the discovery of 14 new species: Aphelandra guacharorum J.R.I.Wood, A. montis-tusae J.R.I.Wood & Hoyos-Gómez, Justicia betancurii J.R.I.Wood, J. chloroleuca J.R.I.Wood, J. cristalina J.R.I.Wood & Hoyos-Gómez, J. daironcardenasii J.R.I.Wood & Hoyos-Gómez, J. ipanorensis J.R.I.Wood, J. lutescens J.R.I.Wood & Hoyos-Gómez, J. macuirensis J.R.I.Wood, J. perijaensis J.R.I.Wood, J. reniformis J.R.I.Wood, J. rheophytica J.R.I.Wood & Hoyos-Gómez J. santanderana J.R.I.Wood & Hoyos-Gómez and Ruellia rheophytica J.R.I.Wood & Hoyos-Gómez. These are described and illustrated with line drawings. Additionally, a full description and line drawings of two poorly known species, Justicia hochreutineri J.F.Macbr. and J. trianae (Leonard) J.R.I.Wood are provided. Notes are provided on 21 other species drawing attention to new records for Colombia, rediscoveries and taxonomic issues. Justicia hochreutineri J.F.Macbr., J. pilosa (Ruiz ex Nees) Lindau, J. zamorensis Wassh. and Stenostephanus lasiostachyus Nees are recorded for the first time for Colombia. Justicia pampolystachys Leonard is treated as a synonym of J. hyperdasya Leonard. Poikilacanthus moritzianus (Nees) Lindau is shown to be restricted to Venezuela. Adhatoda pilosa Ruiz ex Nees is lectotypified. Attention is drawn to the number of rheophytes in Colombian Acanthaceae and to the importance of the Río Claro and Río Samaná Norte area of Antioquia as a centre of plant diversity.

Lomandra reflexa Jian Wang ter (Asparagaceae: Lomandroideae), a new species from central Queensland, Australia, is described, illustrated and compared to the morphologically related species L. filiformis and L. grayi. Notes on its distribution, habitat, phenology and affinities are provided. A conservation status of Least Concern is proposed.

In the synopsis of Casearia Jacq. in West and Central Africa (Breteler 2008), only a single, poor collection (Adam 3972), identified as C. prismatocarpa Mast., was recorded from the mountains of Guinea. More recently, some other flowering and fruiting specimens of Casearia have been collected from the same region as Adam’s specimen and together they represent a new species. It is illustrated and named herein as Casearia septandra, its distribution is mapped and conservation status assessed as Endangered, according to the IUCN criteria. A key to the four Casearia species of the Upper Guinea region of West Africa is presented.

Ruellia taboleirana (Acanthaceae) was originally described from specimens restricted to the tabuleiros litorâneos on the Northeast Brazilian coast. Here, we expand its geographic distribution to coastal areas with Amazonian influence and make important contributions on its morphology and ecology. We also present the first photos in vivo that evidence its morphological variation, along with scanning electron micrographs of pollen grains, an updated conservation status assessment, and a detailed line drawing of this species for the first time. Finally, we provide an identification key for all species of Ruellia that occur in the state of Maranhão.

Portulaca diegoi is here proposed as a heterotypic synonym (synon. nov.) of P. hatschbachii, a species endemic to southern Brazil. Analysis of type specimens and protologues of both names demonstrated that they do not differ in root, leaf, flower, fruit or seed morphology. P. hatschbachii can be distinguished from other Portulaca species by its decumbent habit, oblanceolate leaves with purplish and recurved apex, lanate leaf axillary trichomes, hemispheric operculum and thick and elongated roots. In addition, based on examination of specimens of P. hatschbachii, they are quite distinct, because their leaves turn black after drying. Illustrations and comments about the taxonomy, phenology, distribution, habitat and conservation status are provided for P. hatschbachii.

A new species of Apocynaceae from Atlantic Central Africa, Voacanga madureirae Paiva, O.Lachenaud & Covelo, is mapped, described and illustrated. It occurs on the Gulf of Guinea islands of Príncipe (São Tomé and Príncipe) and Bioko (Equatorial Guinea) and in the highlands of western Cameroon. The new species differs from other African Voacanga by its calyx distinctly exceeding the corolla (vs shorter or at most equalling it). It is further separated from V. chalotiana Pierre ex Stapf by the presence of a row of colleters in the upper half of the calyx (not near the base) and from other Central African species by its syncarpous fruits and almost straight (not strongly twisted) corolla tube. It is assessed as Near Threatened according to IUCN criteria.

This study proposes a new species of Eugenia sect. Phyllocalyx from Atlantic Forest remnants in the Brazilian state of Rio de Janeiro. The new taxon, Eugenia guapiassuana, is proposed based on literature survey, examination of herbarium material and field work. We herein provide a morphological description, including comments on fruit taste, along with information on distribution, habitat, phenology, vernacular name, taxonomy and conservation status. Figures showing fresh and dry material and a map of the occurrence records are also presented. Eugenia guapiassuana is morphologically similar to E. involucrata and E. superba, and these species are contrasted in the discussion. Following an assessment, the conservation status of Eugenia guapiassuana is provisionally determined as Critically Endangered [CR B2ab(iii)].

Lasjia griseifolia Utteridge & Brambach, a member of the Proteaceae, is described and illustrated as a new species from the Indonesian island of Sulawesi. The new species is similar to L. erecta, also from Sulawesi, and morphological differences between the taxa are discussed; a line illustration and detailed notes on the conservation status are provided.