76 



Asarum, Bromus clliatus and Impatiens, and the largest propor- 

 tion of Anemonella, Antennaria, Arlsaema, Aster divaricatus, 

 Polystichinn and Adiantum. With the locust trees grew plants 

 characteristic of the open rather than of the woods ; in fact, no 

 forest plants at all were found except one plant of Aqnilcgia and 

 one of Botrychium virginianum. 



It is evident that the climax forest that will develop if allowed 

 to w^ill differ but slightly from the original forest of the region. 

 This difference will be due to the loss of a few species, especially- 

 chestnut and hemlock, and the possible addition of a few new 

 species, such as sour cherry and ailanthus, which will never make 

 a large proportion of the trees. There will also be a greater pro- 

 portion of black oak and white ash. The vegetation below the 

 trees will show more change, as some introduced plants char- 

 acteristic of open places are so well established in parts of the 

 forest with shallow soil and somewhat xerophytic conditions that 

 they may be considered a permanent part of the forest. Among 

 such plants are Potentilla canadensis, Poa compressa, Oxalis 

 strict a, Fragaria virginiana, Ambrosia art emisac folia and Riibus 

 occidentalis. 



SOME INTRODUCED PLANTS OF UTAH 



By a. O. Garrett 



The following paper is supplementary to one entitled " Some 

 Introduced Plants of Salt Lake County," published in the Octo- 

 ber, 1919, number of Torreya. In that paper sixty-eight species 

 were enumerated as occurring in Salt Lake County. These, to- 

 gether with those here listed, brings the State catalog up to a total 

 of 102 species. 



69. Asparagus officinalis L. Garden Asparagus. A common 

 escape along streams and irrigation ditches throughout the State. 



70. Ruiitc.v Patientia L. Patience Dock. In Salt Lake and 

 adjacent counties. 



71. Polygonum Convolvulus L. Black Bindweed. Throughout 

 the State. 



