88 IOWA ACADEMY OF SCIENCES. 



The observations for 1886 are based on those reported by Dr. Halsted. 

 Those for 1891 were partly made by Mr. Eugene Browr, a special student 

 in botany, Prof. Rolfs and myself. 



In 1886, the Soft Maple {Acer saccharinum) was in flower on March 22; in 

 1891, April 11. Ulmus aviericana, in 1886, in flower, April 12; in 1891, 

 April 18. The succession of flowers in herbaceous plants in 1886 and 1891 

 was: Eepatica acutiloba, April 9 (1886), April 12 (1891); Capsella bursa- 

 pastoris, April 15 (1886), April 24 (1891); Merlensia virginica, April 20 (1886), 

 April 28 (1891). Frost and its effects on some plants were noted: Portulaca 

 oleracea, early in September, tips frost-bitten; October 7, more or less des- 

 troyed; October 9, plants black in an open field; Panieum sanguinale, in- 

 jured seriously on October 8; Borrago officinalis, Oaiober 22, a few leaves 

 affected; October 23, many leaves killed; Scabiosa atropur2nirea, October 7, 

 no injury; October 23, no injury; Nov, 11, no injury; November 21, some 

 injury to leaves. 



REPORT OF THE COMMITTEE ON STATE FLORA. 



BY THE CHAIEMAN, L. H. PAMMEL. 



The several catalogues of the flora of Iowa (Arthur, Bessey), as well as the 

 early contributions by the late Dr. Parry and briefer articles and notices in 

 journals and Gray's Manual give us a pretty accurate knowledge of the 

 the phaenogams and vascular cryptogams found in Iowa. In most cases, 

 however, the range of species is not given. With a number of excellent 

 local collectors in the field a lively interest has been awakened in collecting 

 and bringing together information. Since the appointment of this commit- 

 tee one important contribution to the State Flora has been published. I 

 refer to Prof. Hitchcock's Catalogue of the Anthophyta and Pteridophyta of 

 Amesi. It is indeed a model catalogue in every respect. A short notice 

 •of trees found north of Dubuque has also appeared in Garden and Forest. 2 



In the preparation of this report I am indebted to Mr. F. W. Reppert, of 

 Muscatine, who is a most excellent collector. Some specimens have also 

 been conti'ibuted by Messrs. Stewart (Greenfield), Holway (Decorah), and 

 Prof. Rolfs (Le Claire ank Keokuk). 



1 have arranged the matter as follows: I. Plants new to the State; II. New 

 localities for rare plants; III. Local distribution of some Iowa trees; IV. 

 Changes in our flora, especially in the introduction of weeds and their dis- 

 tribution. 



1. Contributions from the Shaw School of Botany, No. 7. From St. Louis Academy 

 of Science, Vol. V, No. 3. 



2. L. H. Pammel: Forest Vegetation Along the Upper Mississippi, Garden and 

 Forest, Vol. IV., p. 460, 472 and 531. 



