DISTRIBUTIONAL NOTES 339 



showy, and capable of cultivation, and almost any of them would 

 be far more appropriate for a state flower than any of the species 

 hitherto suggested for that distinction. Photographs of most of 

 them and distribution maps of three of them are reproduced in this 

 work. 



The following are probably more abundant in Alabama than 

 in any other equal area, though this state may not contain a ma- 

 jority of their specimens: Hicoria niyristicacformis, Qucrcus Du- 

 raiidii, Ulums scrotina. Magnolia pyraiiiidata, Cotinus, Acer Icuco- 

 dcniic, Bcrchcinia, Xyssa iiiiiflora, Styra.v graiidifolia, Cafalpa, 

 and Jlbnr)mm scmitomcntosuiii. More thorough explorations and 

 quantitative studies in this and adjoining states might reveal many 

 additional examples. 



ADDITIONS AND CORRECTIONS. 



Page 38. Another reason for the scarcity of cotton in the extreme 

 southern part of the state is that the copious late summer rains (see 

 Map 5, page 37) interfere with picking. 



Page 73, line 20. For line read Hme. 



Page 83. The leaves of Yucca filamentosa are very tough, and are 

 often used in the rural districts for suspending meat or fish. 



Page 213. The statement about the ash of Pnttnis being poor in silica is 

 based on a paper by W. D. Richardson in Science (II. 51 :546-551) for May 

 28. 1920, in which it is stated that the ash of twigs of Primus pinnila. a shrub 

 growing on the dunes of Lake Michigan in Indiana, contains only 1.50% of 

 silica (as compared with 12.12 to over 60% in various other plants in the 

 same habitat). (The author neglected to state at what season the material 

 was collected, or the ratio of ash to the total weight of the plant.) 



In order to see whether this was characteristic of other species of 

 Pntiius, even as distantly related as the subgenus Padiis. the writer collected 

 some leaves of Pninus scrotina, growing in red loamy soil in Tuscaloosa, 

 early in August, 1928, and had them burned and the ash analyzed at the 

 University. The ash constituted 6.73% of the dry weight of the leaves, and 

 only 4.22% of it was insoluble in hot hydrochloric acid. This represents 

 approximately the amount of silica at this season. But it should be borne in 

 mind that the silica content of leaves generally increases markedly as the 

 season advances, and that it is greater in leaves than in wood of the same 

 tree. 



Page 286. Mr. Ashe's proposal to substitute Tsiitsusi for Azalea 

 was published in a footnote in an article entitled "Suggestion for a 

 National Arboretum," in the Journal of Forestry for May, 1921 (Vol. 

 19, but page number not given in the reprint). 



A critical reader iwSlX notice some lack of uniformit}- in the styles of 

 type used for names of genera and species, and in the references to 

 literature and the abbreviations of authors' names; most of which may 

 be ascribed to the length of time required to write and print a work of 

 this size and the waiter's preoccupation with other things while this was 

 nearing completion. But these inconsistencies do not affect the accuracy 

 of the treatment, and they are seldom noticeable on any one page. 



