CORKECTION^S AND EXPLANATIONS. 



Berula angioiti/olid (No. o( Hi") is described in Gray's Manual 

 under the synonym of Sliiiii diKjHxtifoliuni. Sec ^VatS(yii''x lilb. 

 [ndex X. Am. Jiot. 



For 4'^2'^ and 427" of tiie "Contiihutions to the FI(jra of Iowa" 

 for 1877 read 523--^ and 527-''. 



Gtrai'dia xetacea of "Flora of Iowa" (No. 545), and of Gray's 

 Manual (not of M^alt.) is (x. SkinneruDia^ Wood. The true (j . seta- 

 cea of Walter is a Southern species. <SVv Si/n. Fl . N. Aht., Tl, 

 294. 



iSfac/n/.s jj(flustri.s, L., var. (-(nulntd^ Gr. (No. 59(1) should be 

 changed to aS'. palustris^ L., as the plant (common throughout the 

 state) is the typical form, and not the variety. The var. cordata., is 

 not likely to be found in Iowa: its range is much further south. 

 See Syn. Fl. JST. Am. 



Lithospermuni longiflomm., Spreng. (No. 005) is to be expunged 

 from the "Flora of Iowa". The plant to which this name has been 

 applied is only an early flowering state of L. atignstifolium., Michx. 

 The discovery of the identity of the two forms was first made by 

 M. S. Bebb of Illinois in 1873. See Amer. Nat., VII, 691. For 

 the revised description of the species see (rraifs Syn. Fl. N.Am. 

 II, 205. 



I/iysalis Virglnica (No. G26) should 1)(^ wi-itten P. Virylniana, 

 Mill. See Syn. Fl. N. Am., II 23b. 



Some specimens remain over that have not been satisfactorily de- 

 termined, for the most part because not complete enough. Among 

 them are several interesting forms belonging to the genus Astrag- 

 alus. It would be advantageous to have these reports made annual- 

 ly, and the only obstacle is the lack of material. Any information 

 relating to the flora of Iowa will be gladly received; and every 

 possible assistance will be rendered any person who desires to 

 help in this work. 



University of Wisconsin, Madison. Wis., December, 1880- 



