Additions to the filamentous Myxophyceae of Indiana, Kentucky and Ohio

During the past several years, numerous specimens of the Myxophyceae from Indiana, Kentucky and Ohio have accumulated in the herbaria cited below. Some of these species presumably have not previously been reported for this region and are now placed on record. It is known that many collections of algea, the bases for previous reports, have been lost or are inaccessible. It is the desire of the writer and of other students of the herbarium that all published works on the algae be based only upon permanently preserved specimens

Notes on the Algae -- I, II

Specimens cited here are to be found in the writer\u27s personal herbarium which is on file in the Herbarium of Butler University and the Cryptogamic Herbarium of the Chicago Natural History Museum.I gratefully acknowledge the suggestions and aid of Dr. Francis Drouet and Fay K. Daily

First reports for the algae Borzia, Aulosira and Asterocytis in Indiana

This Myxophycean, a member of the Oscillatotiaceae, has not been reported previously for the Western Hemisphere

A quantitative study of the phytoplankton of Lake Michigan collected in the vicinity of Evanston, Illinois

There have been but few papers published in which a quantitative study of the phytoplankton of Lake Michigan was considered. A study of this nature was therefore undertaken, using the Sedgwick-Rafter method

The Phytoplankton of the J. W. Frisz Memorial Lagoon, Shades State Park, Indiana

Plankton net collections were made from the J. W. Frisz Memorial Lagoon in the Shades State Park, Montgomery County, at various intervals of time from June 12, 1951 until April 19, 1952. Most of the collections were made by jack McCormick, several by Jay D. Gilliland of Waveland, Indiana, and a few by W. A. Daily.The thirty-seven year old artificial lagoon has an area of approximately three acres and a maximum depth of eighteen feet. It has been well stocked with game fish, but higher aquatic plants are scarce

Revision of the Coccoid myxophyceae

This study originated as an inquiry, some twenty years ago, into what names should be employed for species of coccoid Myxophyceae found in general collections of algae from various parts of the world. Gradually we accumulated and examined many thousands of specimens. Equally gradually it became apparent to us that only a carefully executed revision of the group, with sufficient attention paid to the morphological variation and life history of each species and with strict adherence to the stern discipline of the science of historical taxonomy, would produce a classification and a nomenclature which would satisfy our desire

A Synopsis of the Coccoid Myxophyceae

During the past ten years we have examined large numbers of specimens of this group in the field and in American and European herbaria. Most of the more than one thousand type specimens involved in the nomenclature were found and studied. Many of these proved to be representatives of the twenty-eight species listed here; the remainder are material of Chlorophyceae, Rhodophyceae, bacteria, fungi, and other plants and animals. The following synopsis and keys are offered as a summary of the chief morphological features of the various taxa. It is hoped that a detailed revision, complete with synonymy and lists of specimens, can be published in a short time

Family II. Chamaesiphonaceae

In this family, the plants, originally unicellular, grow eventually into strata or cushions from which filaments of cells penetrate the substratum. The solitary cells are basically attached to the substratum by a sheath of gelatinous material; cell division proceeds, at right angles to the axis of the cell, in an unequal fashion: the apical daughter cell is as a rule much smaller than the basal daughter cell. The upper part of the sheath is burst open, and the small daughter cell passes out of the mother cell sheath or develops in silu within the open sheath

Morphology

The plant -- this term is employed here to indicate a single free cell or a group of cells joined together, usually in a gelatinous matrix. A specimen or single collection may contain many plants of one or few cells mixed with other algae; it may be a single entire globule, cushion, or stratum, or a part of one of these. In the Chroococcaceae and some species of Entophysalis, plants of the same species may be found in the form of strata, cushions, or globules (both microscopic and macroscopic), or as free unattached cells

Family I. Chroococcaceae, part 3

The third and final portion of this article