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Full-Text Articles in Life Sciences

Taxonomic Notes On Amblycerus Thunberg, 1815 (Coleoptera: Bruchidae), John M. Kingsolver, Cibele S. Ribeiro-Costa Sep 1997

Taxonomic Notes On Amblycerus Thunberg, 1815 (Coleoptera: Bruchidae), John M. Kingsolver, Cibele S. Ribeiro-Costa

Insecta Mundi

The following changes in nomenclature of some species of Amblycerus Thunberg, 1815, are proposed: A) Elevated to new taxonomic status-A. insuturatus (Pic, 1902) from (Spermophagus subflavidus var. insuturatus); A. luteolineatus (Pic, 1929) from (Spermophagus luteonotatus var. luteolineatus); A. paulonotatus (Pic, 1906) from (Spermophagus luteonotatus var. paulonotatus). B) New synonmy-A. dispar (Sharp, 1885)(= Spermophagus longissimus Pic, 1902; =S. caryoboriformis Pic, 1910; = S. guyanensis Pic, 1917; S. piceosuturalis Pic, 1927; =S. caracasensis Pic, 1954); A. gounellei (Pic. 1902)(= S. eurtus Pic, 1911; =S. basipennis Pic, 1936); A. insuturatus (Pic, 1902)(= …


The Larva, Pupa And Female Of Agapetus Jocassee Morse (Trichoptera: Glossosomatidae), Jason S. Craft, John C. Morse Apr 1997

The Larva, Pupa And Female Of Agapetus Jocassee Morse (Trichoptera: Glossosomatidae), Jason S. Craft, John C. Morse

Publications

Agapetus jocassee is a "Species of Concern" on the lists of the U.S.D.I. Fish and Wildlife Service because it is known from only three streams of the Lake Jocassee catchment in Oconee and Transylvania counties, South and North Carolina. To assist in solving identification problems and to contribute to knowledge of the distribution of this species, larvae and pupae of A. jocassee were collected from mountain streams in North and South Carolina, reared to adulthood and identified. The larva, pupa, and female of the species are described for the first time. Characters were found in those ontogenetic stages that distinguish …


Taxonomic Status And Biogeography Of The Southern Bog Lemming, Synaptomys Cooperi, On The Central Great Plains, Gregory M. Wilson, Jerry R. Choate Jan 1997

Taxonomic Status And Biogeography Of The Southern Bog Lemming, Synaptomys Cooperi, On The Central Great Plains, Gregory M. Wilson, Jerry R. Choate

Sternberg Museum of Natural History Faculty Publications

We assessed geographic and nongeographic variation among populations of the southern bog lemming (Synaptomys cooperi) in Arkansas, Iowa, Illinois, Kansas, Missouri, Nebraska, and South Dakota based on morphological data. Univariate and multivariate analyses of 15 cranial characters revealed no consistent sexual dimorphism. Geographic variation in cranial morphology of adults varied clinally, with individuals increasing in size from north to south and east to west. The largest individuals overall were from southwestern Kansas (S. c. paludis) and southwestern Nebraska (S. c. relictus), and the smallest individuals were from populations in eastern Illinois (S. c. gossii). We found only minor steps in …


The Internal Transcribed Spacer Region Of Belonolaimus (Nemata: Belonolaimidae), T. Cherry, A. L. Szalanski, T. C. Todd, Thomas O. Powers Jan 1997

The Internal Transcribed Spacer Region Of Belonolaimus (Nemata: Belonolaimidae), T. Cherry, A. L. Szalanski, T. C. Todd, Thomas O. Powers

Department of Plant Pathology: Faculty Publications

Belonolaimus isolates from six U.S. states were compared by restriction endonuclease digestion of amplified first internal transcribed spacer region (ITS1) of the nuclear ribosomal genes. Seven restriction enzymes were selected for evaluation based on restriction sites inferred from the nucleotide sequence of a South Carolina Belonolaimus isolate. Amplified product size from individuals of each isolate was approximately 700 bp. All Midwestern isolates gave distinct restriction digestion patterns. Isolates identified morphologically as Belonolaimus longicaudatus from Florida, South Carolina, and Palm Springs, California, were identical for ITS1 restriction patterns. The correlation between ITS1 restriction patterns and the distribution of B. longicaudatus isolates …


The Linnaean Hierarchy And The Evolutionization Of Taxonomy, With Emphasis On The Problem Of Nomenclature, Kevin De Queiroz Jan 1997

The Linnaean Hierarchy And The Evolutionization Of Taxonomy, With Emphasis On The Problem Of Nomenclature, Kevin De Queiroz

Aliso: A Journal of Systematic and Floristic Botany

During the post-Darwinian history of taxonomy, the Linnaean hierarchy has maintained its role as a means for representing hierarchical taxonomic relationships. During the same period, the principle of descent has taken on an increasingly important role as the basis for reformulated versions of fundamental taxonomic concepts and principles. Early in this history, the principle of descent provided an explanation for the existence of taxa and implied a nested, hierarchical structure for taxonomic relationships. Although an evolutionary explanation for taxa contradicted the Aristotelian context within which the Linnaean hierarchy was developed, the nested, hierarchical structure of taxonomic rela· tionships implied by …


The Rdna Internal Transcribed Spacer Region As A Taxonomic Marker For Nematodes, Thomas O. Powers, T. C. Todd, A. M. Burnell, P. C. B. Murray, C. C. Flemming, Allen L. Szalanski, B. A. Adams, T. S. Harris Jan 1997

The Rdna Internal Transcribed Spacer Region As A Taxonomic Marker For Nematodes, Thomas O. Powers, T. C. Todd, A. M. Burnell, P. C. B. Murray, C. C. Flemming, Allen L. Szalanski, B. A. Adams, T. S. Harris

Department of Plant Pathology: Faculty Publications

The ITS region from a wide taxonomic range of nematodes, including secernentean and adenophorean taxa, and free-living, entomopathogenic, and plant-parasitic species, was evaluated as a taxonomic marker. Size of the amplified product aided in the initial determination of group membership, and also suggested groups that may require taxonomic reevaluation. Congeneric species often displayed identically sized ITS regions, but genera such as Pratylenchus and Tylenchorhynchus had species with large differences in size. ITS heterogeneity in individuals and populations was identified in several nematode taxa. PCR-RFLP of ITS1 is advocated as a method of taxonomic analysis in genera such as Helicotylenchus that …


Descriptions Of Immature Stages Of Trupanea Nigricornis And T. Bisetosa (Diptera: Tephritidae) From Southern California, Khouzama M. Knio, Richard D. Goeden, David H. Headrick Jan 1996

Descriptions Of Immature Stages Of Trupanea Nigricornis And T. Bisetosa (Diptera: Tephritidae) From Southern California, Khouzama M. Knio, Richard D. Goeden, David H. Headrick

Horticulture and Crop Science

The immature stages of the sympatric, cryptic species Trupanea nigricornis (Coquillett), a flower head-infesting fruit fly that attacks a wide range of hosts in the Asteraceae in southern California, and T. bisetosa (Coquillett), an oligophagous congener that attacks only a few hosts in the tribe Heliantheae, are described and illustrated. Detailed examination with the aid of scanning electron microscopy of the eggs, all 3 instars, and puparia of this taxonomically closely allied generalist and specialist revealed many similarities and very few differences, for instance, most puparia of T. nigricornis were shorter and narrower than those of T. bisetosa. Therefore, …


Population Structuring And Patterns Of Morphological Variation In Californian Styrax (Styracaceae), Peter Fritsch Jan 1996

Population Structuring And Patterns Of Morphological Variation In Californian Styrax (Styracaceae), Peter Fritsch

Aliso: A Journal of Systematic and Floristic Botany

Recent studies of genetic variation within and among populations and phylogenetic estimates have provided evidence bearing on the evolutionary history and taxonomy of Styrax in California (S. redivivus). In this paper, data from these studies are further analyzed and integrated with new data from morphology to gain insight into the nature and taxonomic significance of character variation within this species. Six morphological characters thought to be important in the delimitation of infraspecific taxa within S. redivivus were measured on 52 herbarium specimens and analyzed with Pearson correlations and multivariate methods. Five characters are significantly associated with latitude and …


A Key To The Species Of Bluebushes (Maireana Species) Of The Arid Southern Shrublands Of Western Australia, H J. Pringle, R Cranfield Jan 1995

A Key To The Species Of Bluebushes (Maireana Species) Of The Arid Southern Shrublands Of Western Australia, H J. Pringle, R Cranfield

Resource management technical reports

This key has been produced to make identification of Maireana species (the bluebushes) easier in the arid shrublands region of Western Australia. It attempts to use everyday terms rather than technical botanical terms wherever possible and includes an illustrated diagram for ease of identification. A flow diagram - as opposed to traditional botanical keys - allows for visual tracking of steps taken in the key and hence makes it easier to backtrack if the final identified species seems incorrect.Fruit chacters alluded to at various steps in the key are also presented, and drawings of each species fruits are also included …


Corylophomyces, A New Dioecious Genus Of Laboulbeniales On Corylophidae (Coleoptera), Richard K. Benjamin Jan 1995

Corylophomyces, A New Dioecious Genus Of Laboulbeniales On Corylophidae (Coleoptera), Richard K. Benjamin

Aliso: A Journal of Systematic and Floristic Botany

A new dioecious genus of Laboulbeniaceae (Laboulbeniales), Corylophomyces, was established to accommodate five species parasitizing Corylophidae (Coleoptera; Cucujoidea): C. peyerimhoffii (≡Cryptandromyces peyerimhoffit); C. sericoderi (≡Autophagomyces sericoderi); C. sarawakensis (≡A. sarawakensis); and two new species, C. reflexus and C. weirii. A key to the taxa was given and all were illustrated with line drawings. Corylophomyces was placed in Amorphomycetinae sensu Tavares. The other genera included in this subtribe by Tavares in 1985, i.e., Amorphomyces, Dioicomyces, Nanomyces, Rhizopodomyces, and Tetrandromyces, were compared with one another and with the new genus.


Scleractinian Corals Of Kuwait, G. Hodgson, Kent E. Carpenter Jan 1995

Scleractinian Corals Of Kuwait, G. Hodgson, Kent E. Carpenter

Biological Sciences Faculty Publications

A survey was made of the coral reefs of Kuwait to compile a species list of scleractinian corals. Twenty-eight hermatypic and six ahermatypic coral species are listed in systematic order, and a brief description is provided for each. A new species of Acropora is described. The Kuwait fauna is a small subset of the over 500 Indo-Pacific species. Several species show a higher degree of intraspecific variation than they exhibit in other locations. A range extension is reported for Acanthastrea maxima Sheppard & Salm, previously recorded from Oman (north and south coasts). A common species in the Arabian Gulf, Porites …


Floristic Survey Of Northern Sandplains Between Perth And Geraldton, Edward Arnold Griffin Aug 1994

Floristic Survey Of Northern Sandplains Between Perth And Geraldton, Edward Arnold Griffin

Resource management technical reports

A database of plant lists from over 2,500 sites was compiled from the the Northern Sandplains between Perth and Geraldton. Over 2,500 plant taxa were recorded from the area. Preliminary classification revealed in the order of 500 different floristic types. Analysis of these demonstrated strong regional patterns of floristic composition related to geology and soils. Consistencies in these patterns indicated a need to review the location of some of the botanical district boundaries.


Triticeae: A Tribe For Food, Feed And Fun, Roland Von Bothmer, Björn Salomon Jun 1994

Triticeae: A Tribe For Food, Feed And Fun, Roland Von Bothmer, Björn Salomon

Herbarium Publications

Triticeae is an important tribe in the grass family, Poaceae. It contains the cereals wheat, rye, triticale, and barley as well as a large number of wild species, some of which are utilized as forage grasses. The tribe combines all kind of biological mechanisms and genetic systems: diploids and polyploids; annuals and perennials, inbreeders and outbreeders, and even apomicts. Due to this large variation Triticeae is an excellent model group for research in genetics, plant breeding, genetic diversity, taxonomy, and speciation in plants.

Triticeae is distributed in almost all temperate areas of the world and consists of some 350-450 species …


Nomenclatural Changes For Some Diatoms Found In Iowa, David B. Czarnecki Jan 1994

Nomenclatural Changes For Some Diatoms Found In Iowa, David B. Czarnecki

Journal of the Iowa Academy of Science: JIAS

Nomenclatural revisions for four diatom taxa found in Iowa, two of which are presently maintained in the Loras College Freshwater Diatom Culture Collection (FDCC), are necessary because of systematic interpretations of the Division Bacillariophyta. Achnanthidium hauckianum (Grun.) Czarnecki comb. nov. was originally assigned to the genus Achnanthes Bory. Three taxa were previously assigned to the morphologically diverse genus Navicula Bory. These are Cavinula weinzierlii (Schimanski) Czarnecki comb. nov., Craticula cuspidata var. major [(Meist.) Czarnecki comb. nov. and] Craticula halophila var. subcapitata (0str.) Czarnecki comb. nov.


Systematic Anatomy Of Euphorbiaceae Subfamily Oldfieldioideae I. Overview, W. John Hayden Jan 1994

Systematic Anatomy Of Euphorbiaceae Subfamily Oldfieldioideae I. Overview, W. John Hayden

Biology Faculty Publications

The biovulate subfamily Oldfieldioideae of Euphorbiaceae, characterized by spiny pollen, is an otherwise apparently diverse assemblage of mostly Southern Hemisphere trees and shrubs that traditionally have been allied with genera of Phyllanthoideae and Porantheroideae sensu Pax and Hoffmann. Although fairly diverse anatomically, the following structures characterize the subfamily with only a few exceptions: pinnate brochidodromous venation with generally randomly organized tertiary and higher order venation; foliar and petiolar glands absent; unicellular or unbranched uniseriate trichomes; latex absent; mucilaginous epidermis or hypodermis; brachyparacytic stomata; vessel elements with simple perforation plates and alternate, often very small, intervascular pits; thick-walled nonseptate imperforate tracheary …


Laboulbeniales On Semiaquatic Heteroptera. Vi. The Genus Tavaresiella, Richard K. Benjamin Dec 1993

Laboulbeniales On Semiaquatic Heteroptera. Vi. The Genus Tavaresiella, Richard K. Benjamin

Aliso: A Journal of Systematic and Floristic Botany

Majewski's original circumscriptions of Tavaresiella (Laboulbeniales; Laboulbeniaceae; Stigmatomycetinae) and its type species, T. hebri, were emended in this study of the genus. In addition, three new species were described, T. majewskii, T. polhemi, and T. santamariae. These, like the type species, occurred on true bugs of the family Hebridae (Heteroptera). A key to the species was provided, and ali were described and illustrated with line drawings and photographs. Aspects of ascomatic structure and development were summarized, and the genus was compared with other genera of the subtribe having similar characteristics.


Critical Comment: Designation And Curatorial Management Of Type Host Specimens (Symbiotypes) For New Parasite Species, Jennifer K. Frey, Terry L. Yates, Donald Duszynski, William L. Gannon, Scott Lyell Gardner Oct 1992

Critical Comment: Designation And Curatorial Management Of Type Host Specimens (Symbiotypes) For New Parasite Species, Jennifer K. Frey, Terry L. Yates, Donald Duszynski, William L. Gannon, Scott Lyell Gardner

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The accurate identification of a host organism is an important component in the taxonomic recognition of a new species of parasite. Correct identification, curatorial management, and safekeeping of the host specimen from which a parasite type specimen is collected is also desirable. We recommend that the host from which the type of a new parasite species is described should be designated as a symbiotype.


Cupulomyces, A New Genus Of Laboulbeniales (Asomycetes) Based On Stigmatomyces Lasiochili, Richard K. Benjamin Jan 1992

Cupulomyces, A New Genus Of Laboulbeniales (Asomycetes) Based On Stigmatomyces Lasiochili, Richard K. Benjamin

Aliso: A Journal of Systematic and Floristic Botany

A new genus of Laboulbeniales, Cupulomyces, is described. Its type species, C. lasiochili, is based on Stigmatomyces lasiochili, originally described by Roland Thaxter in I 917. This taxon subsequently has been classified in two other genera, Hesperomyces and Acompsomyces. Structure and development of the thallus of C. lasiochili are described and illustrated with photographs and line drawings. Distinctive features of the receptacle, appendage, and perithecium warrant recognition of a new genus.


An Updated Phylogenetic Classification Of The Flowering Plants, Robert F. Thorne Jan 1992

An Updated Phylogenetic Classification Of The Flowering Plants, Robert F. Thorne

Aliso: A Journal of Systematic and Floristic Botany

This update of my classification of the flowering plants, or Angiospermae, is based upon about 800 pertinent books, monographs, and other botanical papers published since my last synopsis appeared in the Nordic Journal of Science in 1983. Also I have narrowed my family- and ordinal-gap concepts to bring acceptance of family and ordinal limits more in line with those of current taxonomists. This new information and the shift in my phylogenetic philosophy have caused significant changes in my interpretation of relationships and numbers and content of taxa. Also the ending "-anae" has been accepted for superorders in place in the …


A Revision Of The Allium Fimbriatum (Alliaceae) Complex, Dale W. Mcneal Jan 1992

A Revision Of The Allium Fimbriatum (Alliaceae) Complex, Dale W. Mcneal

Aliso: A Journal of Systematic and Floristic Botany

Allium fimbriatum in California and northern Baja California causes frequent difficulty in identification. The species, as defined by Ownbey, comprises nine varieties and is characterized by great morphologic diversity. No single character or suite of characters separates this species from others in the A. sanbornii alliance. This investigation was undertaken to survey the large number of herbarium specimens that have accumulated since Ownbey's study and to observe all of the taxa in the field or garden, something not accomplished by Ownbey. Orientation of the perianth segments, visible only in living material, along with shape and presence or absence of denticulation, …


A New Genus Of Laboulbeniales (Ascomycetes) On A Species Of Phalacrichus (Coleoptera: Dryopoidea: Limnichidae), With A Note On Mirror-Image Asymmetry In The Order, Richard K. Benjamin Jan 1992

A New Genus Of Laboulbeniales (Ascomycetes) On A Species Of Phalacrichus (Coleoptera: Dryopoidea: Limnichidae), With A Note On Mirror-Image Asymmetry In The Order, Richard K. Benjamin

Aliso: A Journal of Systematic and Floristic Botany

A new genus ofLaboulbeniales, with two species, Phalacrichomyces normalis (type) and P. anomalus, is described from Phalacrichus diligens (Coleoptera: Dryopoidea; Limnichidae). Phalacrichomyces is placed in the Stigmatomycetinae of the Laboulbeniaceae where it appears to be most nearly related to Stemmatomyces and Synandromyces among the other 39 genera of the subtribe. The new taxa are characterized and salient features of the structure and development of their ascomata are summarized and illustrated with photographs and line drawings. The ascomata of associated pairs of P. anomalus display a remarkable degree of mirror-image asymmetry. This phenomenon, which appears to be a characteristic, although …


Seed Testa Morphology Of 18 Species Of Rafnia Thunb. (Fam. Fabaceae, Sub-Family Papilionoideae), G. R. Richardson, R. Cross Oct 1991

Seed Testa Morphology Of 18 Species Of Rafnia Thunb. (Fam. Fabaceae, Sub-Family Papilionoideae), G. R. Richardson, R. Cross

Scanning Microscopy

Scanning electron microscopy was used to conduct a micromorphological study of testae of the seeds of 18 species of Rafnia Thunb. (Fam. Fabaceae, Sub-family Papilionoideae). The testa patterns revealed diagnostic taxonomic features which proved useful in the construction of a key for the identification of the various Rafnia species. Comparisons between air-dried freshly collected, and long-term stored herbarium specimens revealed that testa patterns remained consistent and valid for taxonomic purposes.


Steps Toward A Natural System Of The Dicotyledons, Uwe Jensen Jan 1991

Steps Toward A Natural System Of The Dicotyledons, Uwe Jensen

Aliso: A Journal of Systematic and Floristic Botany

Nucleic acids and proteins provide useful characters for the elucidation of evolutionary relationships. Those protein molecules, e.g., legumins, which are subject to less influence of selection processes, have proven to be most valuable as diagnostic characters in phylogenetic studies. Three systematic investigations conducted using comparative serological legumin analyses are discussed as contributions aiding botanists' understanding of a natural system of classification.


Génétique Systematique Et Des Trichinella [Table Ronde] = Genetics And Systematics Of Trichinella [Round Table], K. D. Murrell, J. Ralph Lichtenfels, Robert L. Rausch Jan 1991

Génétique Systematique Et Des Trichinella [Table Ronde] = Genetics And Systematics Of Trichinella [Round Table], K. D. Murrell, J. Ralph Lichtenfels, Robert L. Rausch

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Up to the present time, the existence of two species in the genus Trichinella has been accepted by most workers. The proliferation of isolates and the definition of numerous genetic populations have caused considerable confusion in recent years for taxonomists and others concerned with these nematodes. The application of the biological species-concept to nematodes of the genus Trichinella has been difficult, but the recent investigations of Dr. E. Pozio and coworkers at the Trichinella Reference Center (Laboratory of Parasitology, Istituto Superiore di Sanita, viale Regina Elena, 299-00161 Rome, Italy) have provided new information on numerous isolates from localities worldwide. By …


Notes On Neotropical Amanoa (Euphorbiaceae), W. John Hayden Oct 1990

Notes On Neotropical Amanoa (Euphorbiaceae), W. John Hayden

Biology Faculty Publications

Lectotypes are designated for Amanoa caribaea Krug & Urban and A. guianensis Aublet; presumed syntypes of the latter taxon are shown to be heterogeneous by inclusion of a previously unrecognized species. Four new species of Amanoa are described: A. congesta from French Guiana and northeastern Brazil; A. gracillima from Manaus, Brazil; A. nanayensis from Amazonian Peru and adjacent Colombia and Brazil; and A. neglecta from French Guiana and Surinam. Amanoa sinuosa is proposed as a new name for the later homonym A. robusta Leal. A key to the 13 neotropical species is presented.


Scanning Electron Microscope Study Of Wohlfahrtia Magnifica (Schiner, 1862) (Diptera: Sarcophagidae) I. Structures With Parasitic And Possible Taxonomic Meaning, I. Ruíz-Martínez, M. D. Soler-Cruz, R. Benítez-Rodríguez, J. M. Pérez-Jiménez, C. Adalid-Fuentes, M. Díaz-López Feb 1990

Scanning Electron Microscope Study Of Wohlfahrtia Magnifica (Schiner, 1862) (Diptera: Sarcophagidae) I. Structures With Parasitic And Possible Taxonomic Meaning, I. Ruíz-Martínez, M. D. Soler-Cruz, R. Benítez-Rodríguez, J. M. Pérez-Jiménez, C. Adalid-Fuentes, M. Díaz-López

Scanning Microscopy

The larval development of Wohlfahrtia magnifica (the most important dipteran causing sheep myiasis in the Palearctic region) has been studied by means of scanning electron microscopy. The ultrastructure of mouth-hooks, oral ridges, labial lobes, body spines and anterior and posterior peritremes is described for the first time. Their possible adaptations to a parasitic lifeway are also discussed. Thus, the use of new structures in the Sarcophagidae taxonomy is proposed from the point of view of their ultrastructure and adaptative morphology.


Monardella Stebbinsii (Lamiaceae), A New Serpentine Endemic Species From The Northern Sierra Nevada, Plumas County, California, Clare B. Hardham, Jim A. Bartel Jan 1990

Monardella Stebbinsii (Lamiaceae), A New Serpentine Endemic Species From The Northern Sierra Nevada, Plumas County, California, Clare B. Hardham, Jim A. Bartel

Aliso: A Journal of Systematic and Floristic Botany

Monardella stebbinsii (Lamiaceae ), a new species from the northern Sierra Nevada of Plumas County, California, is described and illustrated. Characterized by ovate leaves, multiple verticillasters per infiorascence, a matlike habit, reddish papery bracts, and purplish-red leaves with a soft white pubescence, the species is not closely related to any other species of the genus. The new species is apparently restricted to the central portion of a serpentine outcrop located north and east of the confluence of the North Fork of the Feather River and its East Branch.


Dudleya Cymosa Subsp. Costafolia (Crassulaceae), A New Subspecies From The Southern Sierra Nevada, Tulare County, California, Jim A. Bartel, James R. Shevock Jan 1990

Dudleya Cymosa Subsp. Costafolia (Crassulaceae), A New Subspecies From The Southern Sierra Nevada, Tulare County, California, Jim A. Bartel, James R. Shevock

Aliso: A Journal of Systematic and Floristic Botany

Dudleya cymosa subsp. costafolia, a new subspecies from the southern Sierra Nevada, Tulare County, California, is described and illustrated. Along with bright yellow flowers, the cespitose plant produces numerous, small rosettes with rib-shaped linear to linear-oblanceolate leaves, which are unique to the subspecies. The authors have searched numerous other rock outcrops, especially limestone, in the general area for additional plants with no success. Dudleya cymosa subsp. costafolia evidently is restricted to a solitary limestone outcrop north of the South Fork of the Middle Fork of the Tule River.


Taxonomy And Morphology Of Aporomyces (Laboulbeniales), Richard K. Benjamin Jan 1989

Taxonomy And Morphology Of Aporomyces (Laboulbeniales), Richard K. Benjamin

Aliso: A Journal of Systematic and Floristic Botany

Thaxter's original circumscription of Aporomyces (Laboulbeniales) is emended in this study of the eight known species of the genus, three of them new: A. byrrhini, A. lutrochi, and A. physemi. The new species, as well as A. subulatus, A. szaboi, A. trinitatis, and A. uniflagellatus (type), are dioecious and occur on beetles belonging to the Limnichidae (Coleoptera: Dryopoidea). The eighth species, A. perpusillus, appears to be monoecious and occurs on Staphylinidae (Coleoptera: Staphylinoidea). All taxa are described and illustrated with line drawings and/or photographs. Aspects of thalloid structure and development are summarized. Aporomyces …


Enamel Of Yalkaparidon Coheni: Representative Of A Distinctive Order Of Tertiary Zalambdodont Marsupials, K. S. Lester, M. Archer, C. F. Gilkeson, T. Rich May 1988

Enamel Of Yalkaparidon Coheni: Representative Of A Distinctive Order Of Tertiary Zalambdodont Marsupials, K. S. Lester, M. Archer, C. F. Gilkeson, T. Rich

Scanning Microscopy

The enamel of an incisor and a premolar of Yalkaparidon coheni was examined by scanning electron microscopy in fractured and in sectioned, polished surfaces. The enamel of both teeth demonstrated: complete, ovoid and horse-shoe shaped prisms in a Pattern 2 arrangement; a simple parallel prism course; and, enamel tubules in abundance in the premolar but restricted to the innermost enamel in the incisor. Overall, the enamel ultrastructure supports the marsupial affiliation proposed for Yalkaparidon coheni but does not unambiguously ally it with any other order of marsupials.

The observation of a significant ultrastructural difference between the anterior and posterior teeth …