Book Reviews: Plant Variation and Evolution
Book Reviews: Plant Variation and Evolution
Book Reviews: Plant Variation and Evolution
Book Reviews: Chromosomes, Giant Molecules, and Evolution
Book Reviews: Our Precarious Habitat
ABSTRACT Eighty species of vascular plants from thirty-eight families were found in a shallow bog and adjoining areas on East River Mountain in Tazewell County. Many of these are new county records for this poorly collected area.
This is the last of our series of papers on the blackberries of the eastern United States and Canada. We have attempted to account for all of the specific names which have been proposed for the Eubati (subgenus Rubus) in our area. The index covers all six papers in the series.
ABSTRACT Kentucky, a state of great scenic beauty and natural attraction with a well developed system of state parks visited by thousands of people from the urban centres in the North Eastern U.S.A., is urgently in need of its own state flora and ecological botanical survey. The author has concentrated most of his time and attention to organize such a flora since his arrival in the state (August 1968) and this paper gives a survey of work done so far and it shows the unique features of the Kentucky flora and how its study can be coordinated with research and teaching which is relevant to the recent public urge for outdoor recreation and environmental control. A Bibliography of papers published on the Kentucky flora is added.
Vein anastomosis has been studied in the leaves of Ginkgo biloba (Arnott, 1959), Kingdonia uniflora (Foster, 1959), and Circaeaster agrestis (Foster, 1963, 1966, 1968), but after the work of Gluck (1919), recent studies on petal venation have been carried by Gumppenberg (1924), Buxbaum (1937) and Arnott and Tucker (1963, 1964). Particularly because of Foster’s suggestion (1968, p. 599) that the petals may provide important clues to the evolutionary developments in venation patterns in the angiosperms, the present work was started. Further, as Arnott and Tucker had studied the venation in Ranunculus repens v. pleniflorus, it was thought that a study of the petals of R. sceleratus may provide useful clues for comparison.