March 21, 1894.] 



Garden and Forest. 



ii5 



ledifolius. In the vicinity of Canon Spring- Mr. Knowlton 

 obtained a specimen of a tree which subsequently proved 

 to be an Ostrya, but which was not at that time in fruit. In 

 1892 Professor J. W. Toumey, of Tucson, Arizona, botanist 



Ostrya Knowltoni, sp. nov. — A small tree about 4 me- 

 tres in height ; bark of twigs, two years or more old, light 

 gray in color, those one year old cinnamon-brown and 

 glabrescent, those of the current season greenish brown 



Fig. 23. — Oblrya Knowltoni. — See page 114. 



of the State University, visited the same locality and ob- 

 tained fruiting specimens of this tree, which in January, 

 1S94, came into the writer's hands. A technical descrip- 

 tion is here given : 



and pubescent ; leaves with densely pubescent petiole 4 to 

 10 mm. in length, the blade broadly oval in outline, obtuse 

 or broadly cuneate at base, acute or in some specimens 

 obtuse at the apex, dentate-serrate, sometimes doubly so, 



