Topic
Genus
About: Genus is a research topic. Over the lifetime, 68921 publications have been published within this topic receiving 590966 citations. The topic is also known as: monospecies genus & genus (zoology).
Papers published on a yearly basis
Papers
More filters
TL;DR: The three root parasites, Nuytsia, Atkinsonia, and Gaiadendron, are supported as successive sister taxa to the remaining genera, resulting in a monophyletic group of aerial parasites.
Abstract: Loranthaceae (73 genera and ca. 900 species) comprise mostly aerial hemiparasitic plants. Three monotypic genera considered relicts are root parasites. The family is diverse in tropical areas, but representatives are also found in temperate habitats. Previous classifications were based on floral and inflorescence morphology, karyological information, and biogeography. The family has been divided into three tribes: Nuytsiae, Elytrantheae (subtribes Elytranthinae and Gaiadendrinae), and Lorantheae (subtribes Loranthinae and Psittacanthinae). Nuytsiae and Elytrantheae are characterized by a base chromosome number of x = 12, whereas subtribes Loranthinae (x = 9) and Psittacanthinae (x = 8) numbers are derived via aneuploid reduction. To elucidate the phylogeny of the family, we analyzed sequences from five genes (nuclear small and large subunit rDNA and the chloroplast genes rbcL, matK, and trnL-F) representing most genera using parsimony, likelihood, and Bayesian inference. The three root parasites, Nuytsia, Atkinsonia, and Gaiadendron, are supported as successive sister taxa to the remaining genera, resulting in a monophyletic group of aerial parasites. Three major clades are resolved each corresponding to a subtribe. However, two South American genera (Tristerix and Notanthera) and the New Zealand genus Tupeia, which were previously classified in subtribe Elytranthinae, are weakly supported as part of a clade representing the South American subtribe Psittacanthinae.
108 citations
TL;DR: This work presents taxonomic and morphological observations on 19 taxa based primarily on collections made in Connecticut, U.S.A., and from central and northern Canada and describes how some species are difficult to identify or distinguish from other taxa.
Abstract: Despite the fact that the genus Aulacoseira Thwaites is a common component of phytoplankton communities in many North American water bodies, there are relatively few taxonomic based surveys utilizi...
107 citations
TL;DR: The mosquito fauna of Iran includes seven genera, 64 species, and three subspecies, and the records of 12 other species should be verified, including the most recent checklist of Iranian Anopheles.
Abstract: The mosquito fauna of Iran includes seven genera, 64 species, and three subspecies. The records of 12 other species should be verified. There are 24 species in the most recent checklist of Iranian Anopheles. Two species, An. peditaeniatus and An. fluviatilis species V, have been reported since. An. atroparvus, An. labranchiae, and An. martinius of the Maculipennis Group, and An. cinereus, An. nigerrimus, and An. rhodesiensis rupicola were recorded previously but are not included in the checklist. The checklist of Iranian Culicinae includes ten species of the tribe Aedini, but there are some records of four other species: Aedes aegypti, Ochlerotatus berlandi, Oc. chelli, and Oc. dorsalis. The genus Culex includes 19 species, excluding Cx. impudicus, which has not been collected recently, and some doubtful records of Cx. univittatus, Cx. vishnui, and Cx. vagans. The genus Culiseta includes five species and the genera Coquillettidia and Uranotaenia each include one species in Iran. No information is available for the An. subpictus, Oc. caspius, Oc. detritus, and Oc. pulcritaris species complexes in Iran. The An. claviger and Cx. pipiens complexes and the An. hyrcanus group require review.
107 citations
Dissertation•
08 Jul 2008
TL;DR: A comparative review of 58 Lepraria species and 2 varieties is provided together with species descriptions and a key to discuss some previously published but unnamed taxa by different authors.
Abstract: A comparative review of 58 Lepraria species and 2 varieties is provided together with species descriptions and a key. Lecanora leuckertiana is transferred to Lepraria. The following taxa are included: Lepraria achariana, L. adhaerens, L. alpina var. alpina, L. alpina var. zeorinica, L. atlantica, L. atrotomentosa, L. aurescens, L. bergensis, L. borealis, L. caesiella, L. caesioalba var. caesioalba, L. caesioalba var. groenlandica, L. celata, L. coriensis, L. crassissima, L. diffusa, L. eburnea, L. ecorticata, L. elobata, L. friabilis, L. gelida, L. goughensis, L. granulata, L. humida, L. impossibilis, L. incana, L. isidiata, L. jackii, L. lanata, L. lecanorica, L. leprolomopsis, L. leuckertiana, L. lobata, L. lobificans, L. membranacea, L. multiacida, L. neglecta, L. neojackii, L. nigrocincta, L. nivalis, L. normandinoides, L. nylanderiana, L. obtusatica, L. pallida, L. pulchra, L. rigidula, L. salazinica, L. santamonicae, L. santosii, L. sipmaniana, L. squamatica, L. straminea, L. sylvicola, L. texta, L. toensbergiana, L. toilenae, L. umbricola, L. usnica, L. vouauxii, L. xerophila. Additionally some previously published but unnamed taxa by different authors are discussed.
107 citations