1922] 



PFEIFFER — MONOGRAPH OF THE ISOETACEAE 153 



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Gard. Herb.); springy places in cedar barrens, near La- 

 vergne, Rutherford Co., 7 and 17 May, 1880, Gattinger 8812 

 (Mo. Bot. Gard. Herb., N. Y. Bot. Gard. Herb., and U. S. 

 Nat. Herb.); cedar barrens at Lavcrgne, 17 May, 1880, 

 Gattinger (Gray Herb.) ; springy places in limestone fiats 

 near Nashville, April, 1886, Gattinger (Gray Herb.). 



Missouri: common on limestone ledges, Eagle Rock, 3 June, 



1897, Bush 107 (Mo. Bot. Gard. Herb., U. S. Nat. Herb., and 

 Univ. Minn. Herb.) ; common in barrens, Eagle Rock, 22 

 May, 1898, Bush 231 (Gray Herb, and N. Y. Bot. Gard. 

 Herb.) ; common in barrens, Forsyth, 10 June, 1899, Bush 68 

 (Mo. Bot. Gard. Herb., Gray Herb., U. S. Nat. Herb., and 

 N. Y. Bot. Gard. Herb.) ; rocky barrens, Noel, 11 May, 1915, 

 Bush 7547 (Mo. Bot. Gard. Herb., N. Y. Bot. Gard. Herb., 

 and Gray Herb.) ; wet barrens, Swan, 19 May, 1905, Bush 

 2917 (Mo. Bot. Gard. Herb, and N. Y. Bot. Gard. Herb.) ; 

 wet barrens, Swan, 17 May, 1907, Bush 4511 (Mo. Bot. 

 Gard. Herb., Gray Herb., and N. Y. Bot. Gard. Herb.); 

 rocky hillsides,: Jefferson Co., 26 May, 1891, Eggert (Mo. 

 Bot. Gard. Herb., Gray Herb., U. S. Nat. Herb., and Univ. 

 Minn. Herb.) ; rocky hillside, De Soto, Jefferson Co., 29 May, 

 1891, Eggert (Mo. Bot. Gard. Herb, and N. Y. Bot. Gard. 

 Herb.); rocky hillside, De Soto, Jefferson Co., 11 and 25 

 May, 1896, Eggert (Mo. Bot. Gard. Herb, and Univ. Minn. 

 Herb.) ; De Soto, Jefferson Co., without date, Eggert (N. Y. 

 Bot. Gard. Herb.); thin black soil on seeping ledges, lime- 

 stone barrens -1 mi. northwest of Carthage, Jasper Co., 21 

 April, 1922, Palmer 20848 (Mo. Bot. Gard. Herb.) ; moist 



depressions in limestone barrens, near Webb City, Jasper 



Co., 29 May 



(Mo. Bot. Gard. Herb.). 



Arkansas: common in barrens, 8 May, 1902, Bush 1530\ (Mo. 



Bot. Gard. Herb., N. Y. Bot. Gard. Herb., and U. S. Nat. 

 Herb.); wet barrens near Eureka Springs, 8 May, 1902, 

 Canby 136 (Gray Herb.). 



Kansas: rocky soil, Cherokee Co., May, 1897, Hitchcock 1068 



(Mo. Bot. Gard. Herb., U. S. Nat. Herb., Gray Herb., and 

 N. Y. Bot. Gard. Herb.). 



Oklahoma: common on alkali flats, Limestone Gap, Atoka Co., 



first week in June, 1875, Butler (Mo. Bot. Gard. Herb.) ; al- 

 kali flats near Limestone Gap, 26 and 28 May, 1877, Butler 



