A taxonomic revision of Eucalyptus ser. Argyrophyllae

1995 ◽  
Vol 8 (4) ◽  
pp. 499
Author(s):  
MIH Brooker ◽  
AV Slee ◽  
JD Briggs
Keyword(s):  
New Taxa ◽  
Conservation Status ◽  
Taxonomic Revision ◽  
Morphological Features ◽  
South Eastern ◽  
Short Summary

The Eucalyptus ser. Argyrophyllae Blakely is revised. The series consists of the earlier published taxa, E. cinerea, E. cephalocarpa, E. nova-anglica, E. triplex (reduced herein to E. cinerea subsp. triplex), E. alligatrix and E. conspicua, plus two new taxa described herein, E. alligatrix subspp. limaensis and miscella. The taxa occur from far south-eastern Queensland to central and eastern Victoria. A short summary of the species making up the series is given, followed by notes on the diagnostic, morphological features for the series. Notes on the distribution, habitat and conservation status are given for all taxa in the series, and representative specimens are illustrated.

Sagittanthera (Hyacinthaceae, Urgineoideae), a new buzz pollinated genus from the Eastern Cape Province of South Africa

Phytotaxa ◽  
2013 ◽  
Vol 98 (2) ◽  
pp. 43 ◽  
Author(s):  
MARIO MARTÍNEZ-AZORÍN ◽  
MANUEL B. CRESPO ◽  
ANTHONY P. DOLD ◽  
WOLFGANG WETSCHNIG ◽  
MICHAEL PINTER ◽  
...  
Keyword(s):  
South Africa ◽  
New Genus ◽  
Taxonomic Revision ◽  
Morphological Features ◽  
Eastern Cape Province ◽  
Eastern Cape ◽  
Buzz Pollination ◽  
Diagnostic Characters ◽  
South Eastern

Within the framework of a taxonomic revision of subfamily Urgineoideae, we here describe a new genus from south-eastern South Africa. Sagittanthera gen. nov. is at first sight related to Rhadamanthus and Tenicroa, but it can be clearly differentiated by the presence of bracteoles and the anthers connate to form a cone-like structure dehiscing by minute apical pores. This genus is based on Rhadamanthus cyanelloides, an enigmatic species occurring in the Eastern Cape Province of South Africa. It was described on the basis of incomplete material. Recently, Drimia cremnophila and D. mzimvubuensis, two species that match the diagnostic characters of the new genus, were described from the same region. A complete description is presented for Sagittanthera, and data on morphology, ecology, and distribution are also reported. Two species are accepted in this genus, and the necessary combinations are stated. Furthermore, we demonstrate that pollen is released by vibration. This fact together with morphological features of the androecium clearly evidence that buzz pollination occurs in this new genus.

scholarly journals Systematic Revision of the Genus Pancratium L. (Amaryllidaceae) in Egypt with a New Addition

2011 ◽  
Vol 3 (2) ◽  
pp. 24-38 ◽  
Author(s):  
Azza EL-HADIDY ◽  
Monier ABD EL-GHANI ◽  
Wafaa AMER ◽  
Rania HASSAN
Keyword(s):  
New Record ◽  
Taxonomic Revision ◽  
Field Studies ◽  
Morphological Features ◽  
The South ◽  
Leaf Base ◽  
Systematic Revision ◽  
Leaf Orientation ◽  
South Eastern ◽  
Flora Of Egypt

In Egypt, taxonomic aspects of the genus Pancratium L. (Amaryllidaceae, Pancratieae) were thoroughly studied to point out the most reliable characters for taxon delimitation. Here, we base our species on both geographical and morphological features. The detailed taxonomic revision of genus Pancratium is based on field studies and the examination of representative specimens together with the authentic types deposited in the major herbaria of Egypt and Kew. Variations in the aerial scape, spathe, perianth, corona-teeth, pistil, stamens, capsules and seeds, as well as those of leaf base and leaf orientation are good markers to separate the different species. As a result, five species are recognized, including P. trianthum as a new record to the flora of Egypt. It is restricted to the south-eastern corner of Egypt (Gebel Elba region) and being unique in possessing solitary spathe and long attenuate leaf base. A specific key and descriptions are given with typifications.

Genetic variation and phylogeography of the Australian and New Zealand fern Asplenium flabellifolium (Aspleniaceae)

2020 ◽  
Author(s):  
Daniel J. Ohlsen ◽  
Lara D. Shepherd ◽  
Leon R. Perrie ◽  
Patrick J. Brownsey ◽  
Michael J. Bayly
Keyword(s):  
Genetic Variation ◽  
New Zealand ◽  
Breeding System ◽  
Taxonomic Revision ◽  
Morphological Features ◽  
South Eastern ◽  
Tasman Sea ◽  
Eastern Australia ◽  
South Eastern Australia

Asplenium flabellifolium Cav. is a cytologically variable Australian and New Zealand fern. Here, we sequence chloroplast trnL-trnF and rps4-trnS from samples throughout its range to provide the first phylogeographic investigation of a fern common in both countries. Twenty-three haplotypes were detected, which formed six haplogroups in a network. Australian specimens were placed in all haplogroups. The placement of New Zealand haplotypes in five of the haplogroups suggests that this species has dispersed across the Tasman Sea at least five times. Sexually reproducing plants of lower ploidy, detected only in south-eastern Australia, contained haplotypes from the two haplogroups that are successive sisters to the remaining diversity in the phylogeny. This likely suggests that A. flabellifolium was originally a sexually reproducing species in south-eastern Australia and spread to the rest of its distribution where apomictic plants dominate. More than one haplogroup was detected in several areas across its distribution, suggesting that these areas were colonised several times. Other areas harboured several haplotypes from a single haplogroup or haplogroups not recovered elsewhere, indicating possible long-term persistence in these areas. Haplotypes and morphological features were not found to be exclusive to either breeding system or ploidy and no taxonomic revision is proposed.

Species richness, distribution pattern, and conservation status of amphibians in Cross River National Park, south‐eastern Nigeria

Biologia ◽  
2021 ◽  
Author(s):  
Lotanna Micah Nneji ◽  
Adeniyi C. Adeola ◽  
Babatunde E. Adedeji ◽  
Omotoso Olatunde ◽  
Abiodun B. Onadeko ◽  
...  
Keyword(s):  
Species Richness ◽  
Distribution Pattern ◽  
National Park ◽  
Conservation Status ◽  
Cross River ◽  
South Eastern

Stachys semsurensis (Lamiaceae), a new species from Adıyaman province (Turkey) belonging to section Infrarosularis

Phytotaxa ◽  
2021 ◽  
Vol 511 (3) ◽  
Author(s):  
MEHMET FIRAT
Keyword(s):  
New Species ◽  
Geographical Distribution ◽  
Habitat Structure ◽  
Conservation Status ◽  
Morphological Features ◽  
Point Of View ◽  
Distribution Map ◽  
Comprehensive Description ◽  
Glandular Hairs ◽  
A New Species

A new species, Stachys semsurensis (sect. Infrarosularis), is described and illustrated from Adıyaman province, Turkey. From the morphological point of view, it appears to be similar to Stachys cataonica, but it differs in several morphological features including densely covered with short stalked to subsessile glandular hairs in flowering stems, verticillasters congested into ± globose head, calyx teeth lanceolate-subulate, corolla white, tube exserted and nutlets obovoid, greyish-brown, reticulate. A comprehensive description of the new species is provided, including detailed photographs, geographical distribution map, habitat structure and ecology, vernacular name and IUCN conservation status.

scholarly journals Corrigenda — A taxonomic revision of Alstonia (Apocynaceae) in Australia

1992 ◽  
Vol 5 (6) ◽  
pp. 745
Author(s):  
PI Forster
Keyword(s):  
Conservation Status ◽  
Taxonomic Revision ◽  
Key To Species

The genus Alstonia R. Br. is revised for Australia. Six species are recognised, namely A. actinophylla (A. Cunn.) Schurnann, A. constricta F. Muell., A. linearis Benth., A. muelleriana Domin, A. scholaris (L.) R. Br. and A. spectabilis R. Br. Two subspecies are recognised for A. spectabilis, with A. ophioxyloides F. Muell. being reduced to subspecific status. A. muelleriana is lectotypified. Generic and specific descriptions, a key to species; notes on variation, distribution, habitat and conservation status are provided. Ethnobotanical use in Australia and adjacent Papuasia is briefly reviewed.

scholarly journals Co-occurring cryptic species pose challenges for conservation: a case study of the African dwarf crocodile (Osteolaemusspp.) in Cameroon

Oryx ◽  
2014 ◽  
Vol 49 (4) ◽  
pp. 584-590 ◽  
Author(s):  
Nicole L. Smolensky
Keyword(s):  
Cryptic Species ◽  
Conservation Status ◽  
Taxonomic Revision ◽  
Single Species ◽  
Conservation Strategies ◽  
Encounter Rates ◽  
Distribution Maps ◽  
Species Complexes ◽  
Threatened Taxa ◽  
Population Structures

AbstractThe conservation status of threatened taxa may be obfuscated by the detection of cryptic species complexes, in both vertebrate and invertebrate species. African dwarf crocodiles (Osteolaemusspp.) are hunted throughout their range but their conservation status is unknown. Few population assessments have been carried out and there has been a taxonomic revision of the number of species in the genus. The similar morphologies ofOsteolaemus tetraspisandOsteolaemus osbornipose a challenge for conservation in Cameroon, where they are still managed as a single species. Nocturnal spotlight surveys were conducted in three regions during August–November 2010 and December 2011–February 2012 to provide population assessments ofO. tetraspisandO. osborniand raise awareness of the two species in Cameroon. The mean encounter rates ofO. tetraspisandO. osborniwere 1.02 ± SD 1.34 (65 individuals in 39 surveys) and 0.61 ± SD 0.38 (three in four surveys) crocodiles per km, respectively. TheO. tetraspispopulation comprised juveniles predominantly and had a male-biased sex ratio. The fewO. osbornidetected comprised both adults and juveniles. Both species are threatened in Cameroon, based on low encounter rates, young population structures and the threats of habitat loss and hunting pressure. This study provides distribution maps and serves as a baseline to quantify population trends and inform conservation strategies.

scholarly journals Pottery from the Vak-Kur cemetery of the Yudina Culture (based on materials from excavations 3–6)

2020 ◽  
pp. 83-97
Author(s):  
N.P. Turova
Keyword(s):  
River Basin ◽  
Morphological Features ◽  
Burial Ground ◽  
The South ◽  
Significant Similarity ◽  
Funeral Ritual ◽  
South Eastern ◽  
The Status ◽  
The Right ◽  
Archeological Artifacts

Researchers associate the medieval archeological artifacts of the Middle Trans-Urals, whose pottery bears cord impressions, with the Chiyalik, Molchanvo and Yudina Cultures. Despite the large number of artifacts that have been studied, many questions remain open. These include the status, chronology, and interaction of the Molchanovo and Yudina antiquities, as well as the evolution and specifics of their pottery complexes. Publication and analysis of the ceramic collections from Vak-Kur, the largest burial ground of the Yudina Culture, contribute to addressing some problems related to «the Corded Ware cultures». The Vak-Kur burial ground is dated to the 10th–11th centuries based on the assemblage of the associated goods. It is located in the south-eastern part of the Yudina Culture areal, on the right shore of the Tobol River. For all the time of excavations in the area of the ne-cropolis, 220 burials have been studied. The dead were buried in shallow pits according to the ritual of inhuma-tion, on their backs. A specific feature of the funeral ritual is breaking of a part of the accompanying equipment and use of funerary masks. Decorative and morphological features of 143 Yudina vessels have been examined. The tableware has been categorized according to four topographic groups after excavations 3 to 6. It has been noted that, despite the similar shapes of pots, and ornamental proportions and patterns, the pottery from excava-tions 3 to 6 demonstrates a different frequency in use of such elements in the décor as the cord and figured stamps. The biggest differences were detected between the ceramic artifacts found in excavations 4 and 6. It was suggested that the differences in décor between pottery from different excavations are determined not by their asynchronous nature, but by the existence of several tribal sites in the area of the Yudina necropolis. The com-parison of ceramic collections from the Vak-Kur burial ground with those from the medieval burial and settlement sites of the Yudina Culture showed that the pottery from the necropolis is most closely related to collections from the Plamya Sibiri 6 and 7, and Antonovo 1 settlements located in the Tura River basin. These sites were dated by their investigator to the earlier period (6th to 9th centuries) and attributed to the Molchanovo Culture. Based on the significant similarity between the pottery of the named sites and the dishware of the 10th to 11th centuries from excavation 4 of the Vak-Kur burial ground, a revision of the chronology and cultural attribution of these sites has been proposed.

Taxonomic revision and morphological delimitation of Oxalis sect. Ripariae (Oxalidaceae)

Phytotaxa ◽  
2021 ◽  
Vol 529 (1) ◽  
pp. 125-159
Author(s):  
ANELISE NUERNBERG-SILVA ◽  
PEDRO FIASCHI
Keyword(s):  
Conservation Status ◽  
Taxonomic Revision ◽  
Second Step ◽  
Morphological Description ◽  
South American ◽  
Southern Brazil ◽  
Distribution Map ◽  
Phylogenetic Studies ◽  
A New Species ◽  
Near Threatened

Phylogenetic studies indicate that several infrageneric taxa in Oxalis require taxonomic updates to attain monophyly. In this contribution, we update the morphological delimitation of the South American Oxalis sect. Ripariae and provide a taxonomic revision of the currently accepted species. The sectional delimitation was carried out by comparing micro- and macromorphological features of Oxalis sect. Ripariae, O. sect. Corniculatae, and O. sect. Myriophyllum. These sections share yellow flowers and aerial stems. Glandular hairs and larger seeds with the surface longitudinally crested and with projections are exclusive to Oxalis sect. Ripariae. We accept 11 species in the section, including three previously placed in Oxalis sect. Corniculatae (i.e., O. eriocarpa, O. niederleinii, and O. refracta), but excluding O. serpens and O. subvillosa, which are moved to O. sect. Corniculatae. We also describe a new species (Oxalis lourteiginana), propose a new name and status for O. bifrons subsp. littoralis (now O. pampeana), the synonymization of O. irreperta with O. riparia, six second-step lectotypifications, and one epitypification. For each accepted species we provide a morphological description, illustrations, ecological and taxonomic information, conservation status following IUCN, and a geographic distribution map. Most species occur in southern Brazil, but the section is widespread also in Argentina, Uruguay, and eastern Paraguay. Six species are categorized as threatened and further three as near threatened. Besides, we provide an identification key for the taxa of the section.

A taxonomic Revision of Calytrix Labill. (Myrtaceae)

Brunonia ◽  
1987 ◽  
Vol 10 (1) ◽  
pp. 1 ◽  
Author(s):  
LA Craven
Keyword(s):  
New Taxa ◽  
Taxonomic Revision ◽  
Floral Biology ◽  
Taxonomic Rank ◽  
Infrageneric Classification ◽  
Distinctive Features ◽  
Endemic Genus ◽  
Distribution Maps ◽  
Adaptive Structure ◽  
Biological Aspects

A taxonomic revision of Calytrix Labill., an Australian endemic genus of Myrtaceae, tribe Chamelaucieae, is presented. Lhotskya Schauer is reduced to a synonym of Calytrix. Seventy-two species are recognized of which the following 22 are described as new: C. amethystina, C. carinata, C. chrysantha, C. divergens, C. duplistipulata, C. eneabbensis, C. erosipetala, C. formosa, C. gurulmundensis, C. gypsophila, C. habrantha, C. islensis, C. microcoma, C. parvivallis, C. paucicostata, C. platycheiridia, C. praecipua, C. rupestris, C. similis, C. truncatifolia, C. verruculosa and C. warburtonensis. Two species comprise two subspecies each, of which one, C. simplex subsp. suboppositifolia, is also described as new. Other than autonyms the following new names result from the transfer of Calycothrix and Lhotskya species to Calytrix, and/ or changes in taxonomic rank: C, acuttfolia, C, breviseta subsp. stipulosa, C. brownii, C. drummondii, C. glaberrima, C. harvestiana, C. merrelliana, C. nematoclada, C. purpurea, C. smeatoniana and C. sylvana. Distinctive features of the morphology are discussed. A new term, cheiridium, is proposed for an apparently adaptive structure formed from the peduncle and persistent, connate bracteoles. Other biological aspects that are discussed briefly include floral biology, fruit and dispersal, and geography. An informal infrageneric classification, based largely upon floral features, is outlined. New taxa are illustrated. Distribution maps are provided for all taxa.

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