Pub Date : 2022-05-23DOI: 10.25223/brad.sp40.2022.a11
Andrew Gdaniec, P. Hoxey, Keith Bensusan, N. Taylor
Summary. The ex situ conservation work at the Gibraltar Botanic Gardens with Cactaceae is described and illustrated, together with notes on the local climate and cultivation and propagation techniques, including seed-raising and grafting.
{"title":"Ex situ conservation of Cactaceae at the Gibraltar Botanic Gardens","authors":"Andrew Gdaniec, P. Hoxey, Keith Bensusan, N. Taylor","doi":"10.25223/brad.sp40.2022.a11","DOIUrl":"https://doi.org/10.25223/brad.sp40.2022.a11","url":null,"abstract":"Summary. The ex situ conservation work at the Gibraltar Botanic Gardens with Cactaceae is described and illustrated, together with notes on the local climate and cultivation and propagation techniques, including seed-raising and grafting.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47583989","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}
Pub Date : 2022-05-23DOI: 10.25223/brad.n40.2022.a1
Duniel Barrios, David Martínez Llaneras, José Angel García-Beltrán, L. R. González-Torres
Summary: Flower colour polymorphism is one of the most attractive features in pollination studies. This article investigates the factors influencing the frequency of flower colour polymorphism in the Cuban cactus Leptocereus scopulophilus, where four flower morphs have been reported. We determined whether the colour of the tepals is a discrete variable and estimated morphs frequency in the population. To explain the frequencies of the flower morphs, we compared their dimensions. We also contrasted pollination success and flower florivory of the most frequent morphs. Leptocereus scopulophilus presents discrete values of tepal colour for all the morphs, including the albino morph reported in this study for the very first time. The light salmon morph is the most frequent in the population. This could be explained by the higher number of ovules and fruits it produces. Pollination in the species is confirmed to be exclusively nocturnal, and florivory is similar for the magenta and light salmon morphs.
{"title":"Flower morphs in Leptocereus scopulophilus (Cactaceae) and their reproductive success in Pan de Matanzas, Cuba","authors":"Duniel Barrios, David Martínez Llaneras, José Angel García-Beltrán, L. R. González-Torres","doi":"10.25223/brad.n40.2022.a1","DOIUrl":"https://doi.org/10.25223/brad.n40.2022.a1","url":null,"abstract":"Summary: Flower colour polymorphism is one of the most attractive features in pollination studies. This article investigates the factors influencing the frequency of flower colour polymorphism in the Cuban cactus Leptocereus scopulophilus, where four flower morphs have been reported. We determined whether the colour of the tepals is a discrete variable and estimated morphs frequency in the population. To explain the frequencies of the flower morphs, we compared their dimensions. We also contrasted pollination success and flower florivory of the most frequent morphs. Leptocereus scopulophilus presents discrete values of tepal colour for all the morphs, including the albino morph reported in this study for the very first time. The light salmon morph is the most frequent in the population. This could be explained by the higher number of ovules and fruits it produces. Pollination in the species is confirmed to be exclusively nocturnal, and florivory is similar for the magenta and light salmon morphs.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45164010","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}
Pub Date : 2022-05-23DOI: 10.25223/brad.n40.2022.a18
G. Thomson
Summary: The origins of Glasgow Botanic Garden can be found in the city's college ‘physic’ garden in 1704. A new garden, the Royal Botanic Institute of Glasgow replaced it in 1818 at Sandyford in the city. Thomas Hopkirk’s collection formed the basis of the garden. When a larger garden was needed, the Glasgow Botanic Garden was set up in its present location in 1840. William Jackson Hooker made a significant contribution to the development of the garden in the first half of the nineteenth century. As editor of Curtis’s Botanical Magazine for thirty-six years and Director of Kew Gardens, he was a major figure in the field of botanical science. This article details the history of the gardens with particular reference to Hooker. It also reflects on the cacti and other succulents in the early gardens and details lists produced between 1813 and 1825.
{"title":"The Glasgow Botanic Garden, William Jackson Hooker and succulent plants in the early nineteenth century","authors":"G. Thomson","doi":"10.25223/brad.n40.2022.a18","DOIUrl":"https://doi.org/10.25223/brad.n40.2022.a18","url":null,"abstract":"Summary: The origins of Glasgow Botanic Garden can be found in the city's college ‘physic’ garden in 1704. A new garden, the Royal Botanic Institute of Glasgow replaced it in 1818 at Sandyford in the city. Thomas Hopkirk’s collection formed the basis of the garden. When a larger garden was needed, the Glasgow Botanic Garden was set up in its present location in 1840. William Jackson Hooker made a significant contribution to the development of the garden in the first half of the nineteenth century. As editor of Curtis’s Botanical Magazine for thirty-six years and Director of Kew Gardens, he was a major figure in the field of botanical science. This article details the history of the gardens with particular reference to Hooker. It also reflects on the cacti and other succulents in the early gardens and details lists produced between 1813 and 1825.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45442042","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}
Pub Date : 2022-05-23DOI: 10.25223/brad.sp40.2022.a20
G. Thomson
Summary: New Zealand is acutely aware of the threats posed by invasive non-native plants. Nonnative species make up nearly ninety percent of the country's flora. Succulents, numbering over a hundred, constitute a relatively small proportion of the total. Most, if not all, of the country's non-native succulents are a consequence of introduction, escape from cultivation or careless disposal. Carpobrotus edulis and its hybrids pose a threat to native flora. The poisonous Cotyledon orbiculata poses a threat to livestock. These two species are controlled, to some extent, by restrictions on sale and distribution. Conservation measures, other than those applied to these species, are limited. The conservation authorities in New Zealand should be alert of the potential threats from some other succulent plants, especially at local level.
{"title":"New Zealand's non-native flora – friends or foes?","authors":"G. Thomson","doi":"10.25223/brad.sp40.2022.a20","DOIUrl":"https://doi.org/10.25223/brad.sp40.2022.a20","url":null,"abstract":"Summary: New Zealand is acutely aware of the threats posed by invasive non-native plants. Nonnative species make up nearly ninety percent of the country's flora. Succulents, numbering over a hundred, constitute a relatively small proportion of the total. Most, if not all, of the country's non-native succulents are a consequence of introduction, escape from cultivation or careless disposal. Carpobrotus edulis and its hybrids pose a threat to native flora. The poisonous Cotyledon orbiculata poses a threat to livestock. These two species are controlled, to some extent, by restrictions on sale and distribution. Conservation measures, other than those applied to these species, are limited. The conservation authorities in New Zealand should be alert of the potential threats from some other succulent plants, especially at local level.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47764931","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}
Pub Date : 2022-05-23DOI: 10.25223/brad.n40.2022.a11
E. V. VAN JAARSVELD, D. Tribble
Summary: Gasteria disticha var. marxii is described as a new variety from the lower foothills of the Witteberg and Klein Swartberg near Laingsburg, Western Cape, South Africa. It differs from other varieties mainly by its dwarf stature, an adaptation to its harsh habitat.
{"title":"Gasteria disticha var. marxii, a new dwarf variety from the Western Cape Province, South Africa","authors":"E. V. VAN JAARSVELD, D. Tribble","doi":"10.25223/brad.n40.2022.a11","DOIUrl":"https://doi.org/10.25223/brad.n40.2022.a11","url":null,"abstract":"Summary: Gasteria disticha var. marxii is described as a new variety from the lower foothills of the Witteberg and Klein Swartberg near Laingsburg, Western Cape, South Africa. It differs from other varieties mainly by its dwarf stature, an adaptation to its harsh habitat.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48251893","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}
Pub Date : 2022-05-23DOI: 10.25223/brad.sp40.2022.a6
R. Earlé
Summary: The approach to the conservation of Lithops plants in habitat is outlined in the light of the paucity of scientific information on the ecology and population dynamics of the genus. The current on-going conservation research programmes are briefly discussed and some preliminary results of the pro-active conservation efforts given. It is concluded that the preservation of in habitat colonies is the best conservation strategy but long-term re-introduction of cultivated plants can be used in some cases.
{"title":"Conservation research of Lithops N.E.Br. in Namibia and South Africa – a multi-decade term project","authors":"R. Earlé","doi":"10.25223/brad.sp40.2022.a6","DOIUrl":"https://doi.org/10.25223/brad.sp40.2022.a6","url":null,"abstract":"Summary: The approach to the conservation of Lithops plants in habitat is outlined in the light of the paucity of scientific information on the ecology and population dynamics of the genus. The current on-going conservation research programmes are briefly discussed and some preliminary results of the pro-active conservation efforts given. It is concluded that the preservation of in habitat colonies is the best conservation strategy but long-term re-introduction of cultivated plants can be used in some cases.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49371471","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}
Pub Date : 2022-05-23DOI: 10.25223/brad.sp40.2022.a14
Z. Janeba, C. Elizondo
Summary: Two species of the genus Mammillaria Haw. are the only globular cacti belonging to the family Cactaceae that have been reported from the Yucatán Peninsula, occurring only in the northernmost coastal areas of the Mexican state of Yucatán. While Mammillaria heyderi subsp. gaumeri is a relatively common cactus inhabiting various types of biotopes (from stabilised coastal sand dunes to dry tropical deciduous forests), Mammillaria columbiana subsp. yucatanensis has been re-discovered in its habitat near Progreso (type locality) only very recently and only a few specimens have been so far reported. Thus, although recorded from other parts of Mesoamerica, M. columbiana subsp. yucatanensis should be considered as a very endangered plant in Yucatán Peninsula, deserving the special protection status. The biggest threat to both cacti is the destruction of their habitats due to the urbanisation of the coastal areas.
{"title":"Genus Mammillaria Haw. in the Yucatán Peninsula","authors":"Z. Janeba, C. Elizondo","doi":"10.25223/brad.sp40.2022.a14","DOIUrl":"https://doi.org/10.25223/brad.sp40.2022.a14","url":null,"abstract":"Summary: Two species of the genus Mammillaria Haw. are the only globular cacti belonging to the family Cactaceae that have been reported from the Yucatán Peninsula, occurring only in the northernmost coastal areas of the Mexican state of Yucatán. While Mammillaria heyderi subsp. gaumeri is a relatively common cactus inhabiting various types of biotopes (from stabilised coastal sand dunes to dry tropical deciduous forests), Mammillaria columbiana subsp. yucatanensis has been re-discovered in its habitat near Progreso (type locality) only very recently and only a few specimens have been so far reported. Thus, although recorded from other parts of Mesoamerica, M. columbiana subsp. yucatanensis should be considered as a very endangered plant in Yucatán Peninsula, deserving the special protection status. The biggest threat to both cacti is the destruction of their habitats due to the urbanisation of the coastal areas.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49641267","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}
Pub Date : 2022-05-23DOI: 10.25223/brad.n40.2022.a10
R. Mokni, F. Verloove
Summary: Recent botanical surveys undertaken in central and northern Tunisia (North Africa) since 2014, mainly within coastal regions, yielded new records for non-native succulents (casual or naturalising aliens) of vascular plant species belonging to Asparagaceae sensu lato (Dracaena draco (L.) L. subsp. draco, Sansevieria hyacinthoides (L.) Druce, S. trifasciata Prain, Yucca aloifolia L. and Y. gloriosa L.). The reported taxa belong to three genera that represent first records for the vascular flora of Tunisia. Among these new taxa, Sansevieria hyacinthoides is first reported for North Africa and the Mediterranean area whereas Yucca aloifolia is here reported for the first time for North Africa. Distributions and morphological descriptions, as well as phenology and habitat, are given for each of these new records. Notes on their actual status and field photographs are provided.
{"title":"Further records of non-native succulents within Asparagaceae sensu lato as casual or naturalising aliens in Tunisia and North Africa","authors":"R. Mokni, F. Verloove","doi":"10.25223/brad.n40.2022.a10","DOIUrl":"https://doi.org/10.25223/brad.n40.2022.a10","url":null,"abstract":"Summary: Recent botanical surveys undertaken in central and northern Tunisia (North Africa) since 2014, mainly within coastal regions, yielded new records for non-native succulents (casual or naturalising aliens) of vascular plant species belonging to Asparagaceae sensu lato (Dracaena draco (L.) L. subsp. draco, Sansevieria hyacinthoides (L.) Druce, S. trifasciata Prain, Yucca aloifolia L. and Y. gloriosa L.). The reported taxa belong to three genera that represent first records for the vascular flora of Tunisia. Among these new taxa, Sansevieria hyacinthoides is first reported for North Africa and the Mediterranean area whereas Yucca aloifolia is here reported for the first time for North Africa. Distributions and morphological descriptions, as well as phenology and habitat, are given for each of these new records. Notes on their actual status and field photographs are provided.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46712834","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}
Pub Date : 2022-05-23DOI: 10.25223/brad.n40.2022.a6
N. Taylor, Sinzinando Albuquerque‐Lima, M. Telhe, D. Zappi
Summary: A total of twenty-one taxa of Cactaceae, including hybrids, are newly recognised or reevaluated for the area defined for the Cacti of Eastern Brazil, some being described for the first time. Other taxonomic changes are noted together with various range extensions and many of the plants concerned are illustrated.
{"title":"Further additions and corrections to Cacti of Eastern Brazil","authors":"N. Taylor, Sinzinando Albuquerque‐Lima, M. Telhe, D. Zappi","doi":"10.25223/brad.n40.2022.a6","DOIUrl":"https://doi.org/10.25223/brad.n40.2022.a6","url":null,"abstract":"Summary: A total of twenty-one taxa of Cactaceae, including hybrids, are newly recognised or reevaluated for the area defined for the Cacti of Eastern Brazil, some being described for the first time. Other taxonomic changes are noted together with various range extensions and many of the plants concerned are illustrated.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48886403","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}
Pub Date : 2022-05-23DOI: 10.25223/brad.n40.2022.a13
L. Newton
Summary: Aloe archeri, A. rendilliorum and A. tugenensis are very similar in morphology and leaf exudate chemistry but occupy separate geographical locations in northern Kenya. Here they are treated as subspecies of one species, for which A. archeri is the earliest name. Aloe tugenensis had already been reduced to subspecies rank, and the new combination A. archeri subsp. rendilliorum is proposed here. An identification key is provided. Together with three other species in eastern Africa they are possibly a local neoendemic group.
{"title":"Notes on the Aloe archeri complex (Asphodelaceae) in Kenya, with a new combination","authors":"L. Newton","doi":"10.25223/brad.n40.2022.a13","DOIUrl":"https://doi.org/10.25223/brad.n40.2022.a13","url":null,"abstract":"Summary: Aloe archeri, A. rendilliorum and A. tugenensis are very similar in morphology and leaf exudate chemistry but occupy separate geographical locations in northern Kenya. Here they are treated as subspecies of one species, for which A. archeri is the earliest name. Aloe tugenensis had already been reduced to subspecies rank, and the new combination A. archeri subsp. rendilliorum is proposed here. An identification key is provided. Together with three other species in eastern Africa they are possibly a local neoendemic group.","PeriodicalId":50726,"journal":{"name":"Bradleya","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47719525","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}
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