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Spatial richness analysis and an evaluation of extinction risk for the genus Pachyphytum (Crassulaceae), with the description of a new species from Sierra Madre Occidental, Mexico Pachyphytum 属（十字花科）的空间丰富度分析和灭绝风险评估，以及对墨西哥西马德雷山脉一个新物种的描述
IF 1.1 4区 生物学
Phytotaxa Pub Date : 2023-12-07 DOI: 10.11646/phytotaxa.629.3.2
A. Castro‐Castro, Juan Pablo ORTIZ-BRUNEL, Heriberto Ávila-González, Isaac H. LICHTER-MARCK, Pablo Carrillo-Reyes, I. L. LÓPEZ-ENRÍQUEZ, Marco Antonio BARVOSA-JIMÉNEZ
{"title":"Spatial richness analysis and an evaluation of extinction risk for the genus Pachyphytum (Crassulaceae), with the description of a new species from Sierra Madre Occidental, Mexico","authors":"A. Castro‐Castro, Juan Pablo ORTIZ-BRUNEL, Heriberto Ávila-González, Isaac H. LICHTER-MARCK, Pablo Carrillo-Reyes, I. L. LÓPEZ-ENRÍQUEZ, Marco Antonio BARVOSA-JIMÉNEZ","doi":"10.11646/phytotaxa.629.3.2","DOIUrl":"https://doi.org/10.11646/phytotaxa.629.3.2","url":null,"abstract":"Pachyphytum is a genus of rupicolous succulents endemic to central Mexico. Here, we present a comprehensive list of currently recognized taxa in Pachyphytum with a review of biogeographical distribution data, a spatial richness analysis, and conservation assessments based on herbarium records and field work. Pachyphytum has been documented in 11 Mexican states, with the highest concentration of species (14) occurring in xerophilous scrubland, Chihuahuan Desert, and the Sierra Madre Oriental. All species of Pachyphytum are narrow endemics and were therefore categorized as at-risk of extinction according to IUCN criteria. Currently, taxa in Pachyphytum do not have formal protected status due to lack of inclusion on Mexico’s list of endangered species. During fieldwork in preparation for this research, an undescribed Pachyphytum was encountered in Durango state, which we here describe as a new species based on a detailed morphological comparative study.\u0000 ","PeriodicalId":20114,"journal":{"name":"Phytotaxa","volume":"20 12","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138591479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Alexa duckeana (Leguminosae-Papilionoideae): a new species from the Brazilian Amazon Alexa duckeana（豆科-鸭跖草属）：巴西亚马逊河流域的一个新物种
IF 1.1 4区 生物学
Phytotaxa Pub Date : 2023-12-07 DOI: 10.11646/phytotaxa.629.3.7
G. S. Silva, Benjamin MARLAND TORKE, V. Mansano
{"title":"Alexa duckeana (Leguminosae-Papilionoideae): a new species from the Brazilian Amazon","authors":"G. S. Silva, Benjamin MARLAND TORKE, V. Mansano","doi":"10.11646/phytotaxa.629.3.7","DOIUrl":"https://doi.org/10.11646/phytotaxa.629.3.7","url":null,"abstract":"Alexa (Leguminosae, Papilionoideae) comprises nine species of Amazonian trees. An updated analysis of morphological variation in the genus indicated that material identified as Alexa grandiflora in herbaria constituted two distinct species, one of which appeared to be new. Subsequent fieldwork further supported the distinction. Here, we describe the new species, Alexa duckeana, which differs from A. grandiflora, most notably by lacking extrafloral glands and by having shorter pedicels and shorter racemes with more congested flowers. Alexa duckeana occurs only in the southeastern region of Pará, in northern Brazil. We assess its conservation status as Endangered. In addition to the description, we provide an illustration and distribution map for the new species, taxonomic comparisons, and an identification key for the species of Alexa that occur in Brazil.\u0000 ","PeriodicalId":20114,"journal":{"name":"Phytotaxa","volume":"9 6","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138591603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New diatom species Diploneis zhui sp. nov. from Jiuzhaigou National Nature Reserve, China 中国九寨沟国家级自然保护区硅藻新种Diploneis zhui sp.
IF 1.1 4区 生物学
Phytotaxa Pub Date : 2023-12-07 DOI: 10.11646/phytotaxa.629.3.5
Geng Sun, Z. Levkov, Weiyang Xiao, Nikola Moraj, M. G. Udovič, Jie Du, Qunlong Chen, Anđelka Plenković-Moraj
{"title":"New diatom species Diploneis zhui sp. nov. from Jiuzhaigou National Nature Reserve, China","authors":"Geng Sun, Z. Levkov, Weiyang Xiao, Nikola Moraj, M. G. Udovič, Jie Du, Qunlong Chen, Anđelka Plenković-Moraj","doi":"10.11646/phytotaxa.629.3.5","DOIUrl":"https://doi.org/10.11646/phytotaxa.629.3.5","url":null,"abstract":"Diploneis zhui sp. nov. was observed in epilitic diatom communities from Jiuzhaigou National Nature Reserve. The species is described herein based on light microscopy (LM) and scanning electron microscopy (SEM) and ecological information of the type locality is provided. The species is characterized by linear to linear-elliptic valves with broadly rounded ends, 18–39 μm long, and 9.5–11.0 μm wide and partly biseriate striae, 16–18 in 10 μm. The species is compared with most similar taxa from other regions. The discovery of a new diatom species confirms the importance of Jiuzhaigou not only in terms of species richness and endemicity, but also for the biodiversity of freshwater karst ecosystems.","PeriodicalId":20114,"journal":{"name":"Phytotaxa","volume":"11 7","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138591914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tetraploa lignicola, a new freshwater fungal species from Yunnan Province, China 来自中国云南省的淡水真菌新物种 Tetraploa lignicola
IF 1.1 4区 生物学
Phytotaxa Pub Date : 2023-12-07 DOI: 10.11646/phytotaxa.629.3.6
JIA-NING Li, SHI-YU Wang, RONG-JU XU, KE Xu, CHUN-HUA Ma, QI Zhao, Ying-An Zhu
{"title":"Tetraploa lignicola, a new freshwater fungal species from Yunnan Province, China","authors":"JIA-NING Li, SHI-YU Wang, RONG-JU XU, KE Xu, CHUN-HUA Ma, QI Zhao, Ying-An Zhu","doi":"10.11646/phytotaxa.629.3.6","DOIUrl":"https://doi.org/10.11646/phytotaxa.629.3.6","url":null,"abstract":"Two fungal strains were isolated from submerged decaying woods in the freshwater habitats, which are characterized by cylindrical, septate, verrucose, brown conidia, composed of four vertical columns of cells, 3-septate in each column, with four appendages at the base which are slightly tapering toward the apex and each with 5–10-septate. Multigene phylogenetic analyses of combined ITS, LSU, and SSU sequences data showed that the two isolates clustered into a separated clade in Tetraploa. Herein, we report it as a new hyphomycetous species, Tetraploa lignicola. The descriptions, illustrations, and a phylogenetic tree show the placement of T. lignicola, the comparisons between the new species and other morphologically similar taxa in Tetraploa are also provided.\u0000 ","PeriodicalId":20114,"journal":{"name":"Phytotaxa","volume":"1 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138591632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cynorkis adeleana, a new species of Orchidaceae (Orchidoideae; Habenariinae) endemic to Réunion Cynorkis adeleana，留尼汪特有的兰科（兰属；Habenariinae）新种
IF 1.1 4区 生物学
Phytotaxa Pub Date : 2023-12-06 DOI: 10.11646/phytotaxa.629.2.8
T. Pailler, CHARLES-HENRI Robert, Olivier Flores, B. Bytebier, C. Baider
{"title":"Cynorkis adeleana, a new species of Orchidaceae (Orchidoideae; Habenariinae) endemic to Réunion","authors":"T. Pailler, CHARLES-HENRI Robert, Olivier Flores, B. Bytebier, C. Baider","doi":"10.11646/phytotaxa.629.2.8","DOIUrl":"https://doi.org/10.11646/phytotaxa.629.2.8","url":null,"abstract":"<jats:p>N/A</jats:p>","PeriodicalId":20114,"journal":{"name":"Phytotaxa","volume":"43 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138595338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ruehssia bahiensis: a new species of Apocynaceae endemic to a floristically neglected area within the Semi-arid of Bahia, Brazil Ruehssia bahiensis：巴西巴伊亚州半干旱地区被忽视的植物新种
IF 1.1 4区 生物学
Phytotaxa Pub Date : 2023-12-06 DOI: 10.11646/phytotaxa.629.2.4
Ilana C. Oliveira, F. S. E. Santo, A. Rapini, M. C. Dórea, R. P. Oliveira
{"title":"Ruehssia bahiensis: a new species of Apocynaceae endemic to a floristically neglected area within the Semi-arid of Bahia, Brazil","authors":"Ilana C. Oliveira, F. S. E. Santo, A. Rapini, M. C. Dórea, R. P. Oliveira","doi":"10.11646/phytotaxa.629.2.4","DOIUrl":"https://doi.org/10.11646/phytotaxa.629.2.4","url":null,"abstract":"Ruehssia belongs to the Apocynaceae, tribe Marsdeniae, including all neotropical species of this family with erect pollinia. This genus includes about 110 species, 44 of which occur in Brazil. In recent floristic surveys conducted within the Semi-arid region of Bahia state, Northeast Brazil, a new species of Ruehssia was recognised, which is herein described and illustrated. It resembles R. pickelii (Fontella & Morillo) F.Esp.Santo & Rapini, known from the caatinga vegetation in Pernambuco, Paraíba and Rio Grande do Norte states, but has the corolla lobes adaxially pubescent (vs glabrous), corona lobes shorter than (vs as high as) the gynostegium and an exserted, conical (vs inserted and subglobose) style-head apex. The newfound species is named R. bahiensis and is known from only three locations, two within the “sisal territory” and one in the region of Feira de Santana. All these locales are floristically underexplored and have undergone an extensive transformation into pasture and agricultural land.\u0000 ","PeriodicalId":20114,"journal":{"name":"Phytotaxa","volume":"58 11","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138595429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neottia linzhiensis (Orchidaceae, Epidendroideae, Neottieae), a new species from Xizang, China Neottia linzhiensis (Orchidaceae, Epidendroideae, Neottieae), 中国西藏的一个新种
IF 1.1 4区 生物学
Phytotaxa Pub Date : 2023-12-06 DOI: 10.11646/phytotaxa.629.2.5
H. Cai, DONG-LIANG Lin, Chao Ye, HAN-CHEN Wang, BO-YUN Yang, X. Jin
{"title":"Neottia linzhiensis (Orchidaceae, Epidendroideae, Neottieae), a new species from Xizang, China","authors":"H. Cai, DONG-LIANG Lin, Chao Ye, HAN-CHEN Wang, BO-YUN Yang, X. Jin","doi":"10.11646/phytotaxa.629.2.5","DOIUrl":"https://doi.org/10.11646/phytotaxa.629.2.5","url":null,"abstract":"A new species of Orchidaceae, Neottia linzhiensis, from Motuo, Xizang, China, is described and illustrated. Neottia linzhiensis is similar to N. brevicaulis and N. taizanensis, but differs from them by having lip shallowly bilobed at apex, column not curve, and stigma nearly at column apex. \u0000 ","PeriodicalId":20114,"journal":{"name":"Phytotaxa","volume":"64 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138594706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnolia cirorum (Magnolia sect. Talauma, Magnoliaceae), a new species from Pico Bonito National Park, Atlántida, Honduras Magnolia cirorum (Magnolia sect. Talauma, Magnoliaceae), a new species from Pico Bonito National Park, Atlántida, Honduras
IF 1.1 4区 生物学
Phytotaxa Pub Date : 2023-12-06 DOI: 10.11646/phytotaxa.629.2.2
J. Vázquez-García, Sergio Estrada, Abraham Heriberto Martínez, Donovan Aguirre, Kelvin Cubas, M. Muñiz-Castro
{"title":"Magnolia cirorum (Magnolia sect. Talauma, Magnoliaceae), a new species from Pico Bonito National Park, Atlántida, Honduras","authors":"J. Vázquez-García, Sergio Estrada, Abraham Heriberto Martínez, Donovan Aguirre, Kelvin Cubas, M. Muñiz-Castro","doi":"10.11646/phytotaxa.629.2.2","DOIUrl":"https://doi.org/10.11646/phytotaxa.629.2.2","url":null,"abstract":"Honduran Magnoliaceae currently comprise ten species of Magnolia Linnaeus (1753: 535), which display a pattern of allopatric speciation with high (60%) endemism, except for M. hondurensis Molina-Rositto (1974: 95) also found in El Salvador and Guatemala; M. yoroconte Dandy (1930: 147) and M. quetzal Vázquez, Véliz & Tribouillier in Vázquez-García et al. (2013b: 1) shared with Guatemala, recently observed (S. Morales pers. comm.); and M. sororum Seibert in Woodson & Seibert (1938: 828) shared with Nicaragua, Costa Rica and Panamá (Vázquez-García 1994, Vázquez-García et al. 2022).\u0000 ","PeriodicalId":20114,"journal":{"name":"Phytotaxa","volume":"57 2","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138596518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new species of Pleurothallis (Orchidaceae: Pleurothallidinae) in subsection Macrophyllae-Fasciculatae found in Carpish Montane Forest Regional Conservation Area, Peru 在秘鲁卡皮什山地森林地区保护区发现的一种新的Pleurothallis（兰科：Pleurothallidinae），属于Macrophyllae-Fasciculatae亚科
IF 1.1 4区 生物学
Phytotaxa Pub Date : 2023-12-06 DOI: 10.11646/phytotaxa.629.2.6
Luis Ocupa-Horna, Mark Wilson, M. Jiménez
{"title":"A new species of Pleurothallis (Orchidaceae: Pleurothallidinae) in subsection Macrophyllae-Fasciculatae found in Carpish Montane Forest Regional Conservation Area, Peru","authors":"Luis Ocupa-Horna, Mark Wilson, M. Jiménez","doi":"10.11646/phytotaxa.629.2.6","DOIUrl":"https://doi.org/10.11646/phytotaxa.629.2.6","url":null,"abstract":"A new species of Pleurothallis belonging to subsection Macrophyllae-Fasciculatae was discovered in the Carpish Montane Forest Regional Conservation Area, Huánuco, Peru. Pleurothallis carpishensis is described, illustrated, and compared to P. radula, from which it is differentiated by the flowers borne from a depressed spathaceous bract resting on a navicular concavity on the leaf, the oblong-lanceolate, apiculate petals, with large papillae on the margins, the triangular, subacute lip, with a basal, widely ovate and emarginate, papillose-verrucose callus, with two oblique, lateral and marginal keels.\u0000 ","PeriodicalId":20114,"journal":{"name":"Phytotaxa","volume":"57 9","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138596714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An electron microscope study and re-description of the type specimens of Synedra subula and its transfer to Ctenophora (Bacillariophyta) 对Synedra subula模式标本的电子显微镜研究和重新描述，以及将其归入栉水母纲（芽胞动物门）。
IF 1.1 4区 生物学
Phytotaxa Pub Date : 2023-12-06 DOI: 10.11646/phytotaxa.629.2.7
David M. Williams, B. Vijver
{"title":"An electron microscope study and re-description of the type specimens of Synedra subula and its transfer to Ctenophora (Bacillariophyta)","authors":"David M. Williams, B. Vijver","doi":"10.11646/phytotaxa.629.2.7","DOIUrl":"https://doi.org/10.11646/phytotaxa.629.2.7","url":null,"abstract":"Synedra subula Sande Lac. & Suringar is rarely encountered today. Although a reasonable description was provided, the species has never been illustrated. Having discovered the type specimens in the diatom collection of the Naturalis Biodiversity Center in Leiden (the Netherlands), this short account presents details of some specimens using only scanning electron microscopy as no light microscope slides exist or have been prepared. \u0000 ","PeriodicalId":20114,"journal":{"name":"Phytotaxa","volume":"63 3","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138596337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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