Prodromus of a fern flora for Bolivia. XXXIX. Oleandraceae

Phytotaxa ◽  
2018 ◽  
Vol 344 (3) ◽  
pp. 280
Author(s):  
MICHAEL KESSLER ◽  
ALAN R. SMITH

We provide a synopsis to the family Oleandraceae in Bolivia, including three species in the single genus Oleandra. Despite the low number of species, the taxonomy of these is not fully resolved and calls for further study.

2001 ◽  
Vol 79 (8) ◽  
pp. 1380-1393 ◽  
Author(s):  
Stuart R Gelder ◽  
Marco Ferraguti

The spermatozoa of 13 species belonging to seven different genera of the branchiobdellidan families Cambarincolidae and Bdellodrilidae (Annelida: Clitellata) were examined and compared with previously described members of the family Branchiobdellidae. Based on an examination of the spermatozoa in this relatively large number of species within the order, the variation in sperm morphology is now known to be much greater than was previously expected. Considerable variation was found in nearly all characters examined: the acrosome varied in length from 3 to 60 µm and in shape from straight for most of its length to twisted for its whole length. The nuclei also varied in size (from 4 to 22 µm) and in shape from straight to twisted. Four parallel but twisted mitochondria were present in all species examined, and differed only in length. The marginal fiber that coiled around the flagellum varied in size and pitch. By comparing the present data with those from other branchiobdellidans, we found that the apical concavity of the nucleus, the presence of the marginal fiber of the tail, and the absence of a true basal body with the central apparatus of the flagellum penetrating the midpiece mitochondria are the only characters common to all members of the Branchiobdellida. Sperm characters in this taxon are extremely variable, even within a single genus, thus making the definition of "a single" sperm model for the whole group highly problematic. However, the new data will be of significant value in future phylogenetic work.


2003 ◽  
Vol 60 (3) ◽  
pp. 533-568 ◽  
Author(s):  
J. C. MANNING ◽  
P. GOLDBLATT ◽  
M. F. FAY

A revised generic synopsis of sub-Saharan Hyacinthaceae is presented, based on a molecular phylogenetic analysis of the family. Generic rank is accorded only to reciprocally monophyletic clades that can be distinguished by recognizable morphological discontinuities, thereby permitting an appropriate generic assignment of species not included in the analysis. Three subfamilies are recognized within the region. Subfamily Ornithogaloideae, characterized by flattened or angular seeds with tightly adhering testa, is considered to include the single genus Ornithogalum, which is expanded to include the genera Albuca, Dipcadi, Galtonia, Neopatersonia and Pseudogaltonia. Recognizing any of these segregates at generic level renders the genus Ornithogalum polyphyletic, while subdivision of Ornithogalum into smaller, morphologically distinguishable segregates in order to preserve the monophyly of each is not possible. Subfamily Urgineoideae, characterized by flattened or winged seeds with brittle, loosely adhering testa, comprises the two mainland African genera Bowiea and Drimia. The latter is well circumscribed by its deciduous, short-lived perianth and includes the previously recognized genera Litanthus, Rhadamanthus, Schizobasis and Tenicroa. The monotypic Madagascan Igidia is provisionally included in the subfamily as a third genus on the basis of its seeds, pending molecular confirmation of its relationships. Subfamily Hyacinthoideae resolves into three clades, distinguished as tribes Hyacintheae (strictly northern hemisphere and not treated further), Massonieae and Pseudoprospereae tribus nov. Full descriptions and a key to their identification are provided for all genera. New combinations reflecting the generic circumscriptions adopted here are made for most African and all Indian and Madagascan species.


1927 ◽  
Vol 5 (2) ◽  
pp. 109-120 ◽  
Author(s):  
Gobind Singh Thapar

Of the various groups of Helminths, Acanthocephala has received the least attention from Helminthologists; so much so that even its classification is based on very arbitrary characters. This may partly be due to the general belief that infestation with these worms is very rare. The earlier accounts, such as that of Diesing (1851), which deals with a number of species from fishes, giving brief descriptions of their external morphology and a few generalised drawings, describe the various species under a single genus,Echinorhynchus.


1986 ◽  
Vol 3 (6) ◽  
pp. 397-403 ◽  
Author(s):  
Adilson D. Paschoal

The families Licnodamaeidae and Licnobelbi ee are recharacterized. Licnodamaeidae includes the sole genus Licnodamaeus Grandjean, with the species: undulatus (Paoli), pulcherrimus (Paoli) and costula Grandjean, all from Europe; the gen b Licnocepheus Woolley is removed from the family Licnodamaeidae. Licnobelbidae includes also one single genus: Licnobelba Grandjean, with the species: alestensis Grandjean, caesarea (Berlese) and montana Mihelcic, all from Europe. Licnodamaeus granulatus Balogh & Csiszár) (Argentina), Licneremaeus latiflabellatus Paoli and Licneremaeus tuberculatus Paoli (both from taly) are considered incertae sedis.


Author(s):  
J. T. Cunningham

The anchovy belongs to the same family of fishes as the herring, pilchard, and sprat, the family Clupeidæ. But whereas the herring, pilchard, and sprat have so many structural features in common that they are placed in a single genus, namely Clupea, the anchovy is in many respects so peculiar that it is placed in the distinct genus Engraulis. There are many species of Engraulis in various parts of the world, but only one on the coasts of Europe, and that one, commonly known as the ancovy, is called by zoologists Engraulis encrasicholus. The origin of these names dates back to a very early period. Both are used by ancient classical Greek authors.


2012 ◽  
Vol 64 (2) ◽  
pp. 675-692 ◽  
Author(s):  
G. Görür ◽  
H. Akyildirim ◽  
G. Olcabey ◽  
B. Akyurek

This study provides a comprehensive list of Turkey aphid fauna (Hemiptera: Aphididea). A total of 466 species and 12 subspecies belonging to 141 genera and 13 tribes, are listed. The list includes all records from 1903 to 2011. The family of Aphididae comprise the highest number of species (457), followed by Adelgidae (6) and Phylloxeridae (3), respectively. Inside Aphididae, the tribe of Macrosiphini is the richest group with 197 species, whereas the tribe of Cinarini has only one species. The number of aphid species actually reported for Turkey is lower than recorded for neighboring countries, suggesting that further faunistic studies needs to improve informations on this topic.


Check List ◽  
2020 ◽  
Vol 16 (6) ◽  
pp. 1733-1745
Author(s):  
Regigláucia Rodrigues de Oliveira ◽  
Ronison Ferreira de Oliveira ◽  
Hermeson Cassiano de Oliveira ◽  
Denilson Fernandes Peralta ◽  
Gonçalo Mendes da Coceição

Located in southwestern Maranhão, the Parque Nacional da Chapada das Mesas (PNCM), with an extent of about 160,046 ha, is completely inserted in the Cerrado phytogeographic domain. The topography is characterized by a plateau formation consisting of steep hills and medium-altitude mountains with flat tops, which give the PNCM its name. We present an annotated checklist of the mosses that occur in the PNCM. Our checklist includes 26 species of pleurocarpous mosses distributed in 10 families and 22 genera and two species of cladocarpous mosses of the family Orthotrichaceae. The most species-rich families of pleurocarpous mosses were Sematophyllaceae (7 spp.), Pylaisiadelphaceae (6 spp.), and Stereophyllaceae (4 spp.). Eleven species are recorded for the first time from Maranhão and three species are recorded for the first time in the northeast region of Brazil. Taxithelium pluripunctatum (Renauld & Cardot) W.R. Buck and Trichosteleum glaziovii (Hampe) W.R. Buck, are recorded for the first time from Maranhão and the Cerrado phytogeographic domain. Our results expand the knowledge of the Brazilian bryoflora and add distribution data for a number of species in Maranhão and the northeast region.


2017 ◽  
pp. 43
Author(s):  
David H. Lorence ◽  
Guillermo Ibarra-Manríquez

In this work a key is presented to assist in the identification of the 96 species (comprising 36 genera) of Rubiaceae occurring in the "Los Tuxtlas" region of Veracruz, Mexico. Some basic aspects of the geographic distribution and economic importance of the Rubiaceae are presented together with a bibliographic revision of the main taxonomic and floristic works dealing with the family in the area of southern Mexico. Genera with the greatest number of species are: Hoffinannia (8), Psychotria (27), Randia (10), and Rondeletia (7).


Zootaxa ◽  
2010 ◽  
Vol 2408 (1) ◽  
pp. 1 ◽  
Author(s):  
C. DELAND ◽  
C. B. CAMERON ◽  
K. P. RAO ◽  
W. E. RITTER ◽  
T. H. BULLOCK

The family Harrimaniidae (Hemichordata: Enteropneusta) is revised on the basis of morphological characters. The number of harrimaniid genera is increased to nine by the addition of Horstia n. gen., Mesoglossus n. gen., Ritteria n. gen. and Saxipendium, a genus previously assigned to the monospecific family Saxipendiidae. The number of species is increased to 34, resulting from the description of five new species from the eastern Pacific — Horstia kincaidi, Mesoglossus intermedius, M. macginitiei, Protoglossus mackiei and Ritteria ambigua. A description is supplied for a sixth harrimaniid species, Stereobalanus willeyi Ritter & Davis, 1904, which previously had the status of a nomen nudum. Four harrimaniids previously assigned to the genus Saccoglossus are transfered to the genus Mesoglossus — M. bournei, M. caraibicus, M. gurneyi and M. pygmaeus, while Saccoglossus borealis is reassigned to the genus Harrimania. Notes on habitat and zoogeography are included for the seven foregoing species and a table of diagnostic characters for existing and new species and a dichotomous key to the enteropneust families and harrimaniid genera are provided. Finally, a phylogenetic hypothesis concerning the Harrimaniidae is postulated, with discussion on the evolution of the group.


Parasitology ◽  
1965 ◽  
Vol 55 (3) ◽  
pp. 439-451 ◽  
Author(s):  
C. R. Keneedy

Recent experimental work has indicated that species of Archigetes are capable of infecting and maturing in fishes in addition to tubificids.The genus Archigetes is re-defined on the basis of morphological and biological characters, with particular emphasis on recent life history studies. All species capable of neotenic development have been re-united in a single genus.A description of all species of Archigetes together with a key for their identification are included. New synonomies are discussed.The relationship of Archigetes to other genera of the family is briefly considered, and it is concluded that it forms the terminal stage in a series showing the attainment of neotenic development.I wish to thank Professor R. J. Pumphrey in whose Department the work was carried out, and Dr J. C. Chubb for advice and help in the preparation of this manuscript. I am also grateful to Professor K. Berg and Dr R. L. Calentine for the loan of specimens. The work was carried out during the tenure of a Nature Conservancy Research Studentship.


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