173 



V. canina van imdticmdis K. Gray, Bot. Gaz. ii : 292. 1886. 

 V. nmlticanlis Britton, Mem. Torrey Club 5 : 227. 1894. 



Not V. miilticaulis ]ox(\. Pugill. PI. Nouv. 15. 1852. 



Michaux, describing Viola debilis{Y\.^ox.-Kv!\.7,: 150. 1803), 

 questionably assigns Walter's V. canina to his species, but V. 

 debilis\s described as having " floribus albis ; longepedunculatis," 

 and is generally referred to V. striata Ait., while Walter's V. 

 canina is quite certainly the species under consideration. 



Some extensions of range 



Viola rotiindifolia Michx. (to the mountains of North Carolina 

 and Tennessee, fide Small). Very abundant at Tomassee Knob, 

 Mountain Rest and Russells, Oconee Co., South Carolina, and on 

 densely wooded slopes about Rabun Bald in Rabun Co., Georgia. 



Viola canadensis L. (to North Carolina, _/?^r Small). Occa- 

 sionally found on damp shady ravine-sides and slopes looking 

 northward about Rabun Bald in northeastern Georgia, and 

 abundant on the north side of Tomassee Knob, Oconee Co., 

 South Carolina. 



Clemson College, S. C. 



REVIEWS 



Knuth's Handbook of Flower Pollination* 



Hermann Miiller's, " The Fertilization of Flowers," upon which 

 the present encyclopedic work is based, was published thirty -three 

 years ago, and its English translation, by Thompson, ten years 

 later. That book has been out of print for several years, and 

 subsequent investigations have made desirable, not a new edition 

 of the older publication, but an entirely new work. This was 

 undertaken by Dr. Knuth, whose extensive researches in the sub- 

 ject for over fourteen years peculiarly fitted him for the task. 



The work is dedicated to Christian Konrad Sprengel and Dr. 



* Knuth, Dr. Paul. Handbook of Flower Pollination, based upon Hermann 

 Miiller's work, "The Fertilization of Flowers by Insects." Translated by J. R. 

 Ainsworth Davis. Vol. I, pp. xix -[- 382, /. 1-81. Oxford: At the Clarendon 

 Press. 1906. 



