N0.1226. XORTH AMERICAN FERNS— 3fAX0N. 651 



Isoetes howelli Engelm. Trans. St. Loui.s Acad. Sci. 4 : 385. 1882. 



Isocte^ nuda Engelm. Trans. St. LouIh Acad. Sci. 4 : 385. 1882. 

 Isoetes underii'oodil Henderson, Bot. Cruz. 23 : 124. 1897. 

 rrinity and Calaveras counties, California; Dalles of the Coluni])ia and Hood 



River, Oregon {Howell); Kli(;kitat and Spokane counties, Washington {Saks- 



dorf); Idaho {Henderson). 



Isoetes flaccida Shuttlew. ; A. Br. Flora 29 : 178. 18-16. 



I.<netcs jiacclda var. chapmani Engelm. Trans. St. Louis. Acad. Sci. 4 : .S86. 1882. 

 Several localities in Florida. 



Isoetes melanopoda J. Gay, Bull. Soc. Bot. Frauce 11 : 102. 1864, 



Several localities in Illinois. Clifton, Iowa ( Vasei/) ; Oklahoma {Butler) ; Exeter, 

 Nebraska; Jackson County, ^Missouri. 



Isoetes melanopoda pallida Engelm. Trans. St. Louis Acad. Sci. 4 : 387. 

 1882. 

 Texas: Dallas {Recerchon); Hempstead and Houston {Hall); Harrisburg {Joor);. 

 Columbia {Bush); Hockley ( T/iH row). 

 Isoetes butleri Engelm. Bot. Gaz. 3 : 1. 1878. 

 ^Missouri, (!)klahoma, and Tennessee. 



Isoetes butleri immaeulata Engelm. Trans. St. Louis. Acad. Sci. 4; 388, 

 1882. 

 Near Nashville, Tennessee ( Gatllnger) ; St. Louis, Missouri {Eggert). 

 Isoetes minima A. A. Eaton, Fern Bull. 6 : 30. 1898. 



Near Waverly, Spokane County, Washington {Suksdorf). 



Isoetes nuttallii A. Br. in Parry, Am. Nat. 8 : 215. 1874. 



Isoetes suksdorfii Baker, Handbook Fern Allies 132. 1887. 

 Washington, Oregon, and Idaho; Vancouver Island, British Columbia {Macoim)-, 

 Marin County, California {Mrs. Brandegee) . 



Isoetes orcuttii A. A. Eaton, Fern Bull. 8 : 13. 1900. 



San Diego, California {Orcutt). 



Addition to Bihliographg nn page 633. 



1893. The Altitudinal Distriljution of tlie Ferns of the Appalachian Mountain Sys- 

 tem. John K. Small in Bulletin of the Torrev Botanical Club 20 : 455-467. 



