In a small area of red spruce (Picea rubens) on White Top Mountain in southwestern Virginia, where a group of the larger trees were cut ten or twelve years ago, it has been noted that the tall, slender, young trees of the border of the circular chopped area have died. The straggling trees left standing alone have also died.
During the summer of 1939 while the writer was collecting plants in preparation of a flora of McCreary County, Kentucky, an unusual mint was collected near the Alum Creek Ford of South Fork River in that country. The plants were quite abundant in that locality and several specimens were taken during the late summer and fall. All attempts at identification proved fruitless and a specimen was submitted to Dr. Carl Epling, an authority on the family. He replied that he did not know the plant but, was sending it to Dr. F. R. Fosberg at the National Herbarium. A few weeks later Dr. Epling wrote that it had been identified as Mosla lanceolata Max., an old world species and that this collection was the first report from the Western Hemisphere.
At the town of Glenshaw, a few miles north of Pittsburgh, there is a stretch of fertile floodplain leading into which is a deep, narrow, wooded ravine (Falls Run). In the upper part of this ravine the stream which flows through it tumbles over a falls, and above this the wooded valley widens out and passes into open farmlands rising to the top of a hill about 400 feet higher than the mouth of the ravine.
Since the publication of the last report, additional bryological information of interest has come through recent discoveries. Eight liverworts and twenty-one mosses are included in this supplement. With four exceptions which are specified in the text, the collections listed were made by the writer and have been deposited in the Herbarium of The University of Tennessee.
Oxalis violacea has perfectly glabrous petioles throughout most of its range, while O. violacea var. trichophora has petioles more or less densely covered with spreading multicellular hairs. Throughout much of the range of the species mass collections have been made by the writer and by several of his, students. Each collection consists of a leaf, including petiole, from each plant in an area, and has usually been accompanied by several entire plants. These leaves have been sorted into three groups: the first consists of typical O. violacea with perfectly glabrous petioles; the second group consists of petioles with sparse pubescence, and are treated; as var. trichophora, but intermediate; the third group includes petiolles which are copiously pubescent and imay be considered extreme var. trichophora. The second and third groups grade into each other but are quite distinct from the completely glabrous typical O. violacea. Table 1 shows the number of individuals of each group in each collection.