The author quite adequately covers the subject material suggested by the title of the book. Chapters covering the following topics are included: rooting and propagation, dormancy, flowering, fruit-set and development, senescence, abscission, size control and related phenomena, and weed control.
Woody vines, or lianas, have rarely been treated as a separate subject, being instead included, usually, with treatments of vascular plants in general. But they are easily separated from other woody plants, much more easily, for example, than trees can be separated from shrubs. It is, therefore, logical to discuss them as a group.
Oriole Editions, of New York, have just conferred a great favor on students of botanical literature in making available facsimile editions of three great classics, which have been quite rare and virtually unavailable.
This work is the second (and final) volume of the set describing the trees of Puerto Rico and the Virgin Islands. The first volume, “Common Trees of Puerto Rico and the Virgin Islands,” by Little and Wadsworth (1964) covered 250 species; the second volume covers 500 additional species, for a total of 750 species (710 of which are pictured).
While recently working with plants collected in September, 1969, along the North Branch of the Potomac River, the writer examined two sheets of what had appeared to be Solidago rugosa Miller. One of these, from Garrett County, Maryland, proved to be S. rugosa var. celtidifolia (Small) Fernald, with numerous small leaves along the branches of the lax inflorescence, and cauline leaves less than twice as long as wide.
Shady Valley is a mountain cove located in Johnson County in the extreme northeast corner of Tennessee. The valley is about two and one-half miles wide by five miles long and the broad valley floor lies at an elevation of about 2800 feet.
Specimens of the genus Aster in the West Virginia University Herbarium were studied. Twenty-four species are reported for the State by Strausbaugh and Core (1964);1 five additional species are here reported.
A relict stand of Tsuga caroliniana is discovered on a north-facing bluff of the Staunton (Roanoke) River in Halifax County, Virginia, the first Piedmont occurrence known for the State. Associated plants are named and brief phytogeographical comments made.
The adventive distribution of Aegilops cylindrica Host, jointed goatgrass, in Ohio has been studied with the conclusion that the species has in a limited way established itself as a component of the Ohio flora.
Galium pedemontanum (Bell.) All. (Rubiaceae), which was introduced into North America from Eurasia, is currently increasing its geographical distribution on this continent. The history of its range extensions and its present distribution are documented. The species’ ultimate distribution in America is inferred from the study of the climatic and edaphic values to which the European populations are tolerant, and, by analogy, is taken as the overlap of the geographical distributions of the tolerated climates and soils as they occur in North America.