Family: Cladophora Kutzing 1843. identification key. [ Translation from: Flora Slodkowodna Polski 10, 227-263, 1972.]

A description of the algal genus Cladophora from Vol 10 of the ”Freshwater Flora of Poland”. Illustrations are included

Ceratium hirundinella (O.F.Mull.) Bergh. 1882 [Translation from: Flora Slodkowodna Polski. Tom 4. Cryptophyceae, Dinophyceae, Raphidoiphyceae p395-400. Warsaw, Polska Academia Nauk, 1974]

Morphological observations of the dinoflagellate Ceratium hirundinella are given and a key to the difference in types provided. Illustrations are included

Taxonomic description of Peridinium lomnickii, P.lomnickii var. splendida and P. wierzejskii [Translation from: Flora Slodkowodna Polski. Tom 4. Cryptophyceae, Dinophyceae, Raphidoiphyceae, p326,328-330. Warsaw, 1974]

This partial translation from a larger paper provides taxonomic descriptions of the dinoflagellates Peridinium lomnickii, P.lomnickii var. splendida and P. wierzejskii. Illustrations are included

Descriptions of Oscillatoria agardhii, O.prolifera and O.rubescens only [Translation from: Translation from: Flora Slodkowodna Polski. Tom 2. Cyanophyta, Glaucophyta (ed. K. Starmach) p350-352. Warsaw, Polska Academia Nauk, 1966]

Short morphological observations are given for the Cyanophyceae Oscillatoria Agardhii, Oscillatoria prolifica and Oscillatoria rubescens

Anabaena circinalis Rabenhorst and A.flos aquae Brebisson, ex Bornet et Flahault. [Translation from: Flora Slodkowodna Polski 2, 499-504, 1966. ]

A description of the cyanobacteriae Anabaena circinalis Rabenhorst and Anabaena flos aquae Brebisson, ex Bornet et Flanault is given. Illustrations are included

A task analysis of the statistically related computer application needs of doctoral level university graduates with majors in education

This research evaluated the statistically-related computer application tasks which were deemed to be important to the graduate curriculum of doctoral students who major in Education. Data were gathered from samples of foreign (N=22) and American (N=117) students who held degrees in Education from Oregon State University. The sixteen (16) item instrument utilized a six-point Likert type scale for the data collection. The scale, which was validated by consensus using a DELPHI panel procedure, utilized the Hoyt-Stunkard method for assessing reliability. The computed reliability for the instrument was determined to be +0.90. Analysis of variance tests were completed for each of the sixteen (16) tasks and for two additional demographic variables to ascertain differences between foreign and American samples. Hartley's test was used to affirm the homogeneity of variance assumption for the F-statistic. Factor analysis, using the R-mode, provided for the clustering of tasks and constituted the major analysis procedure for the study. The major goal of the research was to substantiate the necessary core of tasks which met the needs of doctoral degree holders majoring in Education. The results of the study indicated the presence of seven (7) clusters of content which were considered basic to curriculum inclusion in doctoral programs for majors in Education. The identified clusters included; I. Analyzing Statistical Data (4 tasks), II. Database and Word Processing for Publishing (3 tasks), III. Hardware Training (2 tasks), IV. DOS Usage for Creating and Accessing Data Files (2 tasks), V. Mainframe Usage and Electronic Mail (3 tasks), VI. Spreadsheet Software Usage (1 task), and, VII. Word Processing Software Usage (1 task). Overall task means ranged from 3.007 to 5.943; significance tests showed only two (2) rejected hypotheses for the sixteen (16) primary tasks. Standard errors of the mean were found to be significantly lower for the American sample. One of the two demographic variables showed a significant difference, that being the one which assessed the importance of computers to the job. American graduates marked this variable significantly higher than did the foreign group. The results of the study present a valid pattern for the development of objectives which should be included in the curriculum of doctoral programs for Education majors

Contemporary integrative taxonomy for sexually deprived protists: A case study of Trachelomonas (Euglenaceae) from western Ukraine

As many other protist groups, euglenophytes are prone to false identification based solely on morphology because of a limited amount of morphological features and cryptic speciation. One of the supposedly completely asexual groups within the freshwater phototrophic representatives of euglenophytes is Trachelomonas , capable of forming an inorganic shell around its cell (i.e., the lorica). The International Code of Nomenclature for algae, fungi, and plants regulates the taxonomy not only of flowering plants, but explicitly also of phototrophic protists, and provides powerful tools to resolve various taxonomic challenges. To exemplify some of the problems and potential solutions, a number of Trachelomonas strains were collected from the muddy, lake‐rich region of Dobrostany and cultivated under stable laboratory conditions. Being a type locality of 58 unclarified Trachelomonas names, this region in western Ukraine is of great taxonomic importance. Based on light and electron microscopy, and on RAxML and MrBayes phylogenetics using multiple loci and a representative taxon sample, a detailed description of investigated strains and their systematic placement is provided. Morphologically, the strains differed slightly but consistently in minute characters such as size, lorica shape and ornamentation. The presently most comprehensive molecular tree of the Euglenaceae indicated to the existence of at least five different species present in the newly investigated samples, although they were collected from localities in very close vicinity to each other and at the same date. Based on morphological comparisons with type illustrations of species validly described 100 or more years ago, biological material was used to epitypify three names of Trachelomonas , eternally linking morphology with reliable genetic information. This taxonomic application is one of the powerful methods to clarify ambiguous scientific names, which has particular importance in character‐poor protists such as the euglenophytes

Cyanobacteria of the thermal spring at Pancharevo, Sofia, Bulgaria

Eight taxa of cyanobacteria were identified in the thermal spring at Pancharevo (in the Sofia basin, Bulgaria). As well as the widespread Lyngbya thermalis, Phormidesmis molle (syn. Phormidium molle), Phormidium papyraceum, Phormidium corium and Mastigocladus laminosus, four species were identified for the first time in Bulgaria: Calothrix thermalis, Gloeocapsa gelatinosa, Leibleinia epiphytica and Symploca thermalis