scholarly journals Taxonomic reassessment of Rehderodendron gongshanense (Styracaceae) based on herbarium specimens and field observations

Phytotaxa ◽  
2020 ◽  
Vol 450 (1) ◽  
pp. 1-7 ◽  
Author(s):  
WAN-YI ZHAO ◽  
PETER W. FRITSCH ◽  
QIANG FAN ◽  
WEN-BO LIAO

Since its publication in 1988, Rehderodendron gongshanense (Styracaceae) has been considered endemic to Gongshan County, Yunnan Province, China and northern Myanmar. Based on morphological data from detailed field observations and examination of herbarium specimens, we demonstrate that R. gongshanense is actually a synonym of R. microcarpum, a species until now neglected taxonomically. We provide an updated description of R. microcarpum that accommodates the variation in the newly expanded concept of the species, along with comments on distribution and ecology, conservation status, specimens cited, and images of the living plants.

2021 ◽  
Vol 46 (2) ◽  
pp. 456-469
Author(s):  
Nicolás Lavandero ◽  
Javiera Chinga ◽  
Raquel Pinto ◽  
María Fernanda Pérez

Abstract— A new Schizanthus species from northern Chile is described and illustrated. Schizanthus nutantiflorus was discovered based on recent collections made during unusual rain events in the Atacama Desert in 2015. The new species is distinguished morphologically from other Schizanthus species from northern Chile by its short corolla tube, with a distinct upper lip arrangement and colour, having the longest lower lip, and downward-facing flowers. Additionally, the reinstatement of Schizanthus fallax is proposed. By using both nDNA and cpDNA, phylogenetic relationships among all species of Schizanthus were investigated. Molecular and field observations, as well as an exhaustive morphological revision of fresh material and herbarium specimens, supports the segregation of Schizanthus with short corolla tubes from northern Chile into three species. We propose that, in order to fully understand both the taxonomy and evolution of Schizanthus, an integrative framework encompassing molecular, ecological, and morphological data should be carried out. Information on distribution, habitat, informal conservation status, as well as taxonomic notes and illustrations are provided. In addition, an updated key for the species of Schizanthus from northern Chile is given.


Phytotaxa ◽  
2017 ◽  
Vol 293 (1) ◽  
pp. 1 ◽  
Author(s):  
LISE A. ZEMAGHO ◽  
SIGRID LIEDE-SCHUMANN ◽  
OLIVIER LACHENAUD ◽  
STEVEN DESSEIN ◽  
BONAVENTURE SONKE

A taxonomic revision of Sabicea subgenus Anisophyllae (Rubiaceae), a group restricted to Central and East Africa, is presented here. This work, based on a study of herbarium specimens and field observations in Cameroon and Gabon, includes a survey of the morphological features of the group, a key to the species, descriptions of all the taxa, and IUCN conservation status assessments. Fifteen species are recognised, four of which are described as new (Sabicea mapiana, S. ndjoleensis, S. parmentierae, S. sciaphilantha), three former varieties are raised to species rank (S. crystallina, S. jacfelicis, S. tersifolia), and one species previously sunk into synonymy is restored (S. bequaertii). Two new infraspecific taxa are also described, Sabicea crystallina subsp. engongensis and S. sciaphilantha subsp. hirsuta. The group has its center of diversity in Gabon, where 10 of the 15 species occur, three of them being endemic to the country.


2018 ◽  
Vol 151 (3) ◽  
pp. 393-422
Author(s):  
Olivier Lachenaud ◽  
Tariq Stévart ◽  
Archange Boupoya ◽  
Nicolas Texier ◽  
Gilles Dauby ◽  
...  

Background and aims – The intensive botanical prospections carried out in Gabon since the publication of the national checklist in 2006 have resulted in c. 34 300 new specimens (amounting to 30% of all collections made in the country) and an annual increase of 25 species in average. As a result, 5175 species of vascular plants are now recorded from Gabon, of which 650 are considered endemic. However, most of the recent discoveries have not yet been published. This paper is the first of a series documenting additions to the flora of Gabon, and new records of poorly known species. It concerns specifically new records from the Lower Ogooué Ramsar site, the third largest delta of Africa, and certainly the most intact, which includes 80% of the country’s wetlands and a wide variety of other habitats.Methods – The new records presented here come essentially from fieldwork conducted in Gabon between 2008 and 2016 by the authors and colleagues. Further information comes from the study of herbarium specimens in BR, BRLU, K, LBV, MO, P and WAG. For each species, information on distribution and ecology is given, and the studied Gabonese collections listed. In case of rare or range-restricted species, collections from other countries are also listed, and a distribution map is provided, as well as an evaluation of the conservation status based on the categories and criteria of the IUCN Red List.Key results – We report 18 additions to the flora of Gabon, including four genera new to the country (Capparis, Gisekia, Hoffmanniella and Leptochloa) and the first records of the neotropical Justicia secunda being naturalised in tropical Africa. New distribution records are also provided for 16 rare Gabonese endemics or near-endemics. Some species are also newly reported from Cameroon (Cissus leemansii, Salacia coronata) and Equatorial Guinea (Cissus leemansii, C. louisii, Lychnodiscus grandifolius, Placodiscus resendeanus, Rutidea gabonensis, Uvaria bipindensis). Two species, which were reported in the 2006 checklist based on misidentifications, are excluded from the Gabonese flora.


Kew Bulletin ◽  
2021 ◽  
Author(s):  
Aurélie Grall ◽  
Iain Darbyshire

SummaryWe present a synopsis and an identification key for the 13 species and one subspecies of the African genus Whitfieldia Hook. (Acanthaceae: Acanthoideae: Whitfieldieae). This work is based on the observation and analysis of morphological data from herbarium specimens and photographs of Whitfieldia species, and the study of all the relevant literature on the genus. Whitfieldia latiflos C.B.Clarke ex Stapf from Liberia is reinstated as an accepted species and a full description and illustration are provided. A new subspecies, W. colorata C.B.Clarke ex Stapf subsp. tigrina A.Grall & I.Darbysh., also from Liberia, is described. In addition, W. arnoldiana De Wild. & T.Durand and W. letestui Benoist are treated as synonyms of W. laurentii (Lindau) C.B.Clarke and W. preussii (Lindau) C.B.Clarke respectively for the first time. Eleven names in Whitfieldia are lectotypified. Reference specimens, relevant literature, habitat notes, distribution maps, taxonomic notes and a preliminary assessment of the conservation status and extinction risk are provided for each taxon. Four species are considered to be threatened of which two (W. latiflos and W. rutilans Heine) are assessed as Endangered (EN) while two others (W. purpurata (Benoist) Heine and W. thollonii (Baill.) Benoist) are placed in the Vulnerable (VU) category. In addition, two taxa are assessed as Near Threatened (NT) and one is currently considered to be Data Deficient (DD).


2018 ◽  
Vol 151 (3) ◽  
pp. 423-433
Author(s):  
Claudio Nicoletti de Fraga ◽  
João Renato Stehmann

Background – Davilla Vand. is a monophyletic genus and member, with other genera endemic to the Neotropics, of the Doliocarpoid clade, a natural lineage of the subfamily Doliocarpoideae J.W.Horn. Its sepals, unequal in size, with two inner ones large and crustaceous and completely covering the fruit, represent a morphological synapomorphy for the genus.Methods – Our fieldwork in remnants of the Atlantic forest in the states of Bahia and Espírito Santo, Brazil, led to the discovery of two new Davilla species. Herbarium collections were consulted for their determination and comparison with identified specimens. Morphological data were obtained through the study of herbarium specimens and of fresh material collected in the field. Key results – Davilla coriacea Fraga & Stehmann and D. undulata Fraga & Stehmann, are herein described and illustrated. Diagnostic characters and affinities of the new species are discussed, accompanied by notes on their ecology, geographic distribution and conservation status. A key to all species of Davilla sect. Homalochlaena is also provided. The new species are similar to D. sessilifolia Fraga and Davilla flexuosa A.St.-Hil. and have been identified in most herbaria as Davilla macrocarpa Eichler. In accordance with the criteria of the IUCN Red List of endangered plant species, D. coriacea and D. undulata are to be assessed as Endangered (EN) and Near Threatened (NT) respectively.


2020 ◽  
Vol 45 (4) ◽  
pp. 707-748
Author(s):  
Felipe Gonzatti ◽  
Paulo G. Windisch ◽  
Fernando J. Scariot ◽  
Sergio Echeverrigaray ◽  
Mara R. Ritter

Abstract—Sphaerocionium is the largest subgenus of Hymenophyllum and occurs mainly in tropical forests of the Neotropical Region. Species of Hymenophyllum occurring in Brazil are poorly known due to difficulties in species delimitation and the absence of detailed studies. The aim of the present study was to present a synopsis of Hymenophyllum subg. Sphaerocionium in the Atlantic Forest domain, based on molecular and morphological data. Field and herbarium specimens were morphologically analyzed by stereomicroscopy, optical microscopy, and scanning electron microscopy. Phylogenetic relationships were evaluated by sequence comparison of the plastidial regions trnG-R and rps4-trnS. Morphological and phylogenetic evidence led to the recognition of 14 taxa throughout the Atlantic Forest, five of which are endemic. The taxonomy and nomenclature of Hymenophyllum in Brazil are revised and 19 new lectotypifications are proposed. The conservation status and geographical distributions of all species are updated and a dichotomous key is provided.


2020 ◽  
Vol 28 (1) ◽  
pp. 17-23 ◽  
Author(s):  
Samuel Lvončík ◽  
Radomír Řepka

There are seven endemic species of Boswellia Roxb. ex Colebr. on Socotra Island, Yemen. Boswellia socotrana Balf. f. is a culturally, economically, and ecologically important species on the island. The name Odina aspleniifolia Balf. f. has been considered as a synonym, but there are morphological differences between the two taxa sufficient to justify their distinction at subspecific rank. Therefore, O. aspleniifolia is transferred to Boswellia as B. socotrana subsp. aspleniifolia (Balf. f.) Lvončik. A lectotype is designated for O. aspleniifolia. The distribution and ecology of both subspecies are discussed, as is their conservation status.


Phytotaxa ◽  
2016 ◽  
Vol 288 (1) ◽  
pp. 19
Author(s):  
CHENG DU ◽  
YUNJUAN ZUO ◽  
YUAN WANG ◽  
QUANRU LIU ◽  
JINSHUANG MA

Based on re-collections at known sites, field observations, researches on specimens and literatures, taxonomic revisions of seven Euonymus species from East and South Asia are provided. Three easily-confused Euonymus species from E. actinocarpus s. l. are clarified. Euonymus quinquecornutus, E. stenophyllus, and E. cornutoidesare reduced to the synonym of E. cornutus, E. clivicola, and E. frigidus respectively. E. elegantissimus is re-instated. The lectotypes are also designated for thirteen names involved within this report since the holotype were not designated in the protologue. Additionally, the conservation status of these species is also reevaluated according to IUCN standards (version 3.1). Besides the above, the key to the species in sect. Uniloculares is also provided.


2019 ◽  
Vol 11 (4) ◽  
pp. 13497-13501 ◽  
Author(s):  
Shashank Poudel ◽  
Babu Ram Lamichhane ◽  
Santosh Bhattarai ◽  
Dipendra Adhikari ◽  
Chiranjibi Prasad Pokheral ◽  
...  

Twelve cat species were recorded in Nepal including the largest, Tiger Panthera tigris, and the smallest, Rusty-spotted Cat Prionailurus rubiginosus.  There is more research on the Panthera species than on small wild cats; consequently, the conservation status, distribution, and ecology of small cat species are poorly known.  In this article, we report on the first photographic evidence of Clouded Leopard Neofelis nebulosa and Fishing Cat Prionailurus viverrinus in Parsa National Park in southern central Nepal during a camera trap survey targeted at the tiger between 2014 and 2016.  There were only single detections of each species; this does not give enough information to establish distribution or conservation status of either of the species in Parsa National Park.  Further targeted surveys are needed to establish the significance of this protected area for the conservation of these two species.


2020 ◽  
Vol 21 (8) ◽  
Author(s):  
Iyan Robiansyah ◽  
Wita Wardani

Abstract. Robiansyah I, Wardani W. 2020. Increasing accuracy: The advantage of using open access species occurrence database in the Red List assessment. Biodiversitas 21: 3658-3664. IUCN Red List is the most widely used instrument to assess and advise the extinction risk of a species. One of the criteria used in IUCN Red List is geographical range of the species assessed (criterion B) in the form of extent of occurrence (EOO) and/or area of occupancy (AOO). While this criterion is presumed to be the easiest to be completed as it is based mainly on species occurrence data, there are some assessments that failed to maximize freely available databases. Here, we reassessed the conservation status of Cibotium arachnoideum, a tree fern distributed in Sumatra and Borneo. This species was previously assessed by Praptosuwiryo (2020, Biodiversitas 21 (4): 1379-1384) which classified the species as Endangered (EN) under criteria B2ab(i,ii,iii); C2a(ii). Using additional data from herbarium specimens recorded in the Global Biodiversity Information Facility (GBIF) website and from peer-reviewed scientific papers, in the present paper we show that C. arachnoideum has a larger extent of occurrence (EOO) and area of occupancy (AOO), more locations and different conservation status compared to those in Praptosuwiryo (2020). Our results are supported by the predicted suitable habitat map of C. arachnoideum produced by MaxEnt modelling method. Based on our assessment, we propose the category of Vulnerable (VU) C2a(i) as the global conservation status for C. arachnoideum. Our study implies the advantage of using open access databases to increase the accuracy of extinction risk assessment under the IUCN Red List criteria in regions like Indonesia, where adequate taxonomical information is not always readily available.


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