Powellomyces, a new genus in the Spizellomycetales

1995 ◽  
Vol 73 (9) ◽  
pp. 1385-1390 ◽  
Author(s):  
Joyce E. Longcore ◽  
Donald J. S. Barr ◽  
Nicole Désaulniers
Keyword(s):  
Key Words ◽  
New Genus

Powellomyces (order Spizellomycetales) is erected for soil-inhabiting chytrids previously classified in Entophlyctis. Fischer's narrative and figures indicate that Entophlyctis was originally described to accommodate aquatic, chytridialean species, and consequently this is not an appropriate genus for spizellomycetalean species. Powellomyces hirtus sp.nov. and Powellomyces variabilis nom.nov. both develop exogenously but differ in distribution of rhizoids on germlings and in colour of colonies in culture. Key words: Chytridiales, Entophlyctis, Powellomyces, Spizellomycetales.

Applanodictyosporous Pleosporales: Clathrospora, Comoclathris, GraphyIlium, Macrospora, and Platysporoides

1992 ◽  
Vol 70 (8) ◽  
pp. 1617-1658 ◽  
Author(s):  
R. A. Shoemaker ◽  
C. E. Babcock
Keyword(s):  
Key Words ◽  
New Genus ◽  
New Family ◽  
The Family

Six genera of the order Pleosporales are revised taxonomically. Although five genera have unusual applanate ascospores, they are members of three different families. Clathrospora (10 species, 2 new), Comoclathris (21 species, 7 new), and Macrospora (3 species) are placed in a new family Diademaceae in which the ascoma opening is a characteristic flat circular lid. Diademosa, a new genus with one species with terete ascospores is placed in Diademaceae. Graphyllium (3 species) is placed in the family Hysteriaceae characterized by hysterothecia with a slit-like opening. Platysporoides n.gen. (11 species, 1 new) is maintained in the Pleosporaceae because of the terete pored beak of the ascomata. Key words: Pleosporales, applanate ascospores, Clathrospora, Comoclathris, Macrospora, Diademosa, Graphyllium, Platysporoides.

scholarly journals Chlorophytum nepalense (Lindley) Baker (Liliaceae) - A new angiospermic record for Bangladesh

1970 ◽  
Vol 37 (2) ◽  
pp. 193-194 ◽  
Author(s):  
Sumona Afroz ◽  
Ershad Tutul ◽  
Mohammad Zashim Uddin ◽  
Md Abul Hassan
Keyword(s):  
Key Words ◽  
New Record ◽  
New Genus ◽  
Perennial Herb ◽  
New Genus And Species ◽  
The Family

Chlorophytum nepalense (Lindley) Baker, a perennial herb, belonging to the family Liliaceae has been described and illustrated as a new genus and species record for Bangladesh. Key words: Chlorophytum nepalense, New record, Bangladesh doi:10.3329/bjb.v37i2.1730 Bangladesh J. Bot. 37(2): 193-194, 2008 (December)

Trichocintractia, a new genus for Cintractia utriculicola (Ustilaginales)

1995 ◽  
Vol 73 (7) ◽  
pp. 1089-1096 ◽  
Author(s):  
Meike Piepenbring
Keyword(s):  
Cell Surface ◽  
Key Words ◽  
New Genus ◽  
Spore Wall ◽  
Irregular Surface ◽  
Wall Ultrastructure ◽  
Spherical Cells

Cintractia utriculicola, which produces sori in the spikelets of Rhynchospora spp., differs from typical Cintractia species by long sterile cells at the base of the sorus instead of a mycelial stroma with sporogenous pockets and by a persistent peridium of spherical cells. While in other Cintractia species the ornamentation of the teliospores originates at an undulated plasmalemma as an irregular surface of the exosporium, in Cintractia utriculicola warts develop on a smooth cell surface and are loosely connected to the exosporium. A new genus, Trichocintractia, is proposed for Cintractia utriculicola. Key words: Ustilaginales, Cintractia, Cintractia utriculicola, Trichocintractia utriculicola, soral morphology, spore wall ultrastructure.

A new genus, Rotiferophthora, to accommodate the Diheterospora-like endoparasites of rotifers

1991 ◽  
Vol 69 (3) ◽  
pp. 494-502 ◽  
Author(s):  
G. L. Barron
Keyword(s):  
New Species ◽  
Key Words ◽  
New Genus ◽  
Hydrophobic Membrane ◽  
Bdelloid Rotifers ◽  
Oil Droplet

The species of Diheterospora attacking bdelloid rotifers have been compared with Diheterospora chlamydosporia and found to be different in a number of important characteristics. These include the consistent presence of aphanophialides, proliferation of phialides and aphanophialides to form polyphialides, containment of the conidial mass in a hydrophobic membrane, reduction or elimination of the verticillate arrangement of the conidiogenous cells, and presence of a large oil droplet in each conidium. It is considered that these differences are sufficient to separate the rotifer parasites from both Diheterospora and Verticillium. Accordingly, a new genus, Rotiferophthora, is erected to accommodate the 17 species recognized in this group of fungi. Thirteen rotifer parasites previously described under Diheterospora, Verticillium, or Acrostalagmus are transferred to Rotiferophthora, and four new species of Rotiferophthora are described. Key words: Diheterospora, Rotiferophthora, endoparasite, rotifer.

Colacogloea: a new genus in the auricularioid Heterobasidiomycetes

1990 ◽  
Vol 68 (12) ◽  
pp. 2531-2536 ◽  
Author(s):  
Franz Oberwinkler ◽  
Robert Bauer ◽  
Robert J. Bandoni
Keyword(s):  
Life Cycle ◽  
Key Words ◽  
New Genus ◽  
Phase Iii ◽  
Simultaneous Presence ◽  
Yeast Phase ◽  
Septal Pores ◽  
Distinguishing Features

A new genus, Colacogloea, is described in the auricularioid Heterobasidiomycetes having simple septal pores. The genus is based on Platygloea peniophorae, a mycoparasite of some Aphyllophorales species. It is a segregate from the heterogeneous Platygloea s.l. The most important distinguishing features of Colacogloea are (i) the frequently simultaneous presence of basidial and conidial stages, (ii) a dimorphic life cycle including a yeast phase, (iii) mycoparasitism by colacosomes, (iv) simple septal pores with rounded margins, but without associated electron-opaque bandings and globules, and (v) aseptate basidiospores. Key words: Heterobasidiomycetes, Platygloea, Colacogloea peniophorae, mycoparasitism, colacosomes.

Catenalis digitata, gen. et sp.nov., a plant from the Lower Devonian (Siegenian) of Yunnan, China

1991 ◽  
Vol 69 (4) ◽  
pp. 873-882 ◽  
Author(s):  
Hao Shougang ◽  
Charles B. Beck
Keyword(s):  
Key Words ◽  
Vascular Plants ◽  
Major Part ◽  
Lower Devonian ◽  
New Genus ◽  
Vascular Plant ◽  
Morphological Differentiation ◽  
Distal Margin ◽  
New Genus And Species

A new genus and species, Catenalis digitata, is described from two localities of the Posonchong Formation of Siegenian age in the Wenshan district of Yunnan. This small, dichotomously branched plant exhibits morphological differentiation into a vegetative region that comprises the major part of the plant and terminal fertile regions. The fertile regions consist of fan-shaped clusters of terminal branchlets that bear uniseriate sporangia on only one side. Many sporangia have a crescent-shaped dehiscence slit near the distal margin. Some terminal branchlets in fertile regions lack sporangia, but the positions from which they have apparently been lost are conspicuous as elliptical regions. In these segments a dark, carbonaceous strand is apparent in a groove along the midplane. A few tracheid-like fragments have been macerated from a segment of carbonized axis suggesting that Catenalis might have been a vascular plant, but because of a lack of detailed information on the components of these strands we cannot conclude with certainty that they were typical vascular plant tracheids. Because of a morphology intermediate between that of certain fucalean algae and typical land vascular plants, we suggest that Catenalis might represent a group ancestral to vascular plants or a new group of primitive vascular plants of algal derivation. Key words: Catenalis digitata, alga-like, dichotomous, uniseriate sporangia, Siegenian, Yunnan.

Isolation and characterization of cellulolytic anaerobic fungi and associated mycoplasmas from the rumen of a steer fed a roughage diet

1990 ◽  
Vol 36 (7) ◽  
pp. 513-517 ◽  
Author(s):  
H. Kudo ◽  
K. D. Jakober ◽  
R. C. Phillippe ◽  
K.-J. Cheng ◽  
D. J. S. Barr ◽  
...  
Keyword(s):  
Key Words ◽  
New Genus ◽  
Anaerobic Fungi ◽  
Ecological Role ◽  
New Genus And Species ◽  
Fermentation Products ◽  
Isolation And Characterization ◽  
Neocallimastix Patriciarum

The isolation of 12 strains of cellulolytic fungi from the rumen of a roughage-fed steer is described. These represented three different genera, including one new genus and species (Orpinomyces bovis). The organisms were indistinguishable on the basis of fermentation products from cellulose, and their fermentation patterns were very similar to those of rumen fungi isolated in other countries. Mycoplasmas were found to be associated with 7 of the 12 isolates. The ecological role of the association of the mycoplasmas with rumen fungi is still unknown. Key words: Orpinomyces bovis, Piromyces communis, Neocallimastix patriciarum.

Suffrianaltica, a new genus of flea beetles (Coleoptera: Chrysomelidae: Galerucinae: Alticini) from the West Indies

2020 ◽  
Vol 17 (1) ◽  
pp. 1-11
Author(s):  
ALEXANDER S. KONSTANTINOV ◽  
ADELITA MARIA LINZMEIER
Keyword(s):  
Key Words ◽  
West Indies ◽  
New Genus ◽  
Neotropical Region ◽  
The West ◽  
Flea Beetles

New genus Suffrianaltica gen. nov. is described to accommodate Chaetocnema tuberculata (Suffrian, 1868). It is illustrated and compared to Apraea Baly, 1877, Glyptina LeConte, 1859, and Guadeloupena Bechyne, 1956 and their distinguishing characters are illustrated. The lectotype of Chaetocnema tuberculata (Suffrian, 1868) is designated. Key words: Neotropical region, Cuba, new genus, lectotype designation, Suffrian

A new genus of the Hyphomycetes endoparasitic in bdelloid rotifers with conidia that lodge in the mastax

1991 ◽  
Vol 69 (3) ◽  
pp. 503-506 ◽  
Author(s):  
G. L. Barron
Keyword(s):  
Key Words ◽  
New Genus ◽  
Bdelloid Rotifers

Haptospora is described as a new genus of the Hyphomycetes endoparasitic in rotifers. The genus is distinguished by conidia that have a doughnut-shaped modification at the base. This structure appears to have a function in lodging the conidium in the mastax of the host. The conidiogenous cells are phialides, each with a membranous collarette. Two species of Hyphomycetes, described previously as Phialophora endoparasitica and P. tribrachispora, are transferred to Haptospora, and a third species, Haptospora appendiculata, is described as new. Key words: Phialophora, Haptospora, endoparasite, rotifer.

Precise flagellar configuration of the Rhizophlyctis harderi zoospore

1992 ◽  
Vol 70 (4) ◽  
pp. 762-771 ◽  
Author(s):  
Sonali Roychoudhury ◽  
Martha J. Powell
Keyword(s):  
Key Words ◽  
New Genus ◽  
Flagellar Apparatus ◽  
The Other ◽  
Taxonomic Position ◽  
Serial Sections ◽  
Microtubular Roots

Rhizophlyctis harder is a questionable member of the genus Rhizophlyctis, and more stable and reliable characters are needed to establish the taxonomic position of this chytrid. As a source of such characters the flagellar apparatus of zoospores of R. harderi was reconstructed from serial sections, and the precise configuration was determined. The flagellar apparatus included two major microtubular roots, each with separate points of origin near the kinetosome. Root A extended laterally from one side of the kinetosome toward and around one rumposome and then continued anteriorly. The other, root B, originated between the kinetosome and secondary centriole near fibrillar connecting material and projected anteriorly into the cytoplasm. Each of these two major roots branched into two rootlets. This system of microtubular roots is more complex than that found in the flagellar apparatus of other Chytridiomycetes presently described. The structure of the flagellar apparatus and accompanying roots clearly separates this species from others in the genus Rhizophlyctis and indicates that it can be used to establish a new genus in the Chytridiales. Key words: Rhizophlyctis harderi, Chytridiales, zoospores, flagellar apparatus, ultrastructure.

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