MICHIGAN ACADEMY OF SCIENCE. :{r>1 



perforce bo construed as applying to the A. vulffaris which was coujuion there. 

 The panicle is slightly purplish and minutely roug^sh. Keweenaw Co., July 5, 

 1895, No. 856 ; Belle Isle, July 21, 1895, No. 856a. 



A. STOLON iFERA forma iiispida (Willd.) n. comb. (A. hispida Willd. Sp. PI. 

 l,:mx 1797). Panicle long hispid. Keweenaw Co., July 5, 1895, No. 856%. 



A. STOLONiFEUA var. PALUSTBis (Huds.) n. comb. (A. polymorpha var. 

 pahuslris Huds. FI. Ang. 32, 1798; A. alba Lin. Sp. PI. 63, 1753). Plants low, 

 panicles short and pale (not violet). Keweenaw Co., July 5, 1895, No. S5GY2 ', 

 Yi)silanti, June 30, 1892, No. 560a and No. I,25iy2 ; Detroit, July 23, 1902, No. 

 1780 ; Parkedale, July 23, 1912, No. 2853 ; Belle Isle, Aug. 29, 1903, No. 1811. 



A. STOLONFERA var. PALUSTRis forma DECUMBENS (Gaud.) n. comb. 

 (A. diffusa Host. Gram. Austr. IV. t. 55. 1809 ; A. alba var. decumbens Gaud. 

 Fl. Hel. 1. 188, 1828). Panicle violet colored. Keweenaw Co., Aug. 26, 1887, 

 No. 560; Algonac, July 7, 1812, No. 2829. A. stolonifera vai-. minor (A''asey) 

 Farwell belongs here. The plant was determined by Dr. Vasey as his A. alba. 

 var. minor. It is low with a very narrowly oblong panicle. Keweenaw Co., 

 Aug. 29. 1887, No. 571. 



A. STOLONIFERA var. MAJOR (Gaud.) n. comb. A. alba. vai-. major Gaud. 

 Fl. Helv. 1,189, 1828; .4. gigantea Gaud. Agrost. I, 81, 1811.) A tall form with 

 elongated panicles and broader leaves. Belle Isle, July 2, 1901, No. 1719. 



• 



A: stolonifera var. coarctata (Ehrh.) Pers. (A. stolonifera var. maritima 

 (Lam.) Koch ; A. alba var. coarctata (Ehrh.) Blytt.) Plant gray-green, stems 

 prostrate and rooting at the joints, flowering branches erect, tufted or cespi- 

 tose, panicle pale, contracted. Detroit, June 27, 1893, No. 560 b ; Belle Isle, 

 July 22, 1893. No. 560 c ; Algonac, July 7, 1912, No. 2828. In the last edition 

 of Gray's Manual the varietal name "maritima'" is used for this plant, but tlie 

 use of "coarctata" as a varietal name dates from Persoon, 1805, and antedates 

 that of the other by 31 years. 



.4. stolonifera var. stolonifera (Sm.) Koch. {A. stolonifera var. prorepens 

 Koch; A. alba var. prorepens Asch. ; A. alba var. stolonifera G. F. W. Mey.) 

 Similar to the last preceding but plant grass-green, more widely creeping and 

 less tufted, flowering branches reclining or weakly ascending, not erect, lloch- 

 ester, July 4, 1901, No. 560 d; Parkdale, July 4, 1918, No. 5032. The var. 

 coarctata generally grows in rather dry places, while the var. stolonifera is 

 usually found on wet grounds. 



The iibdvc interpretation should replace .1. aiha ;iii<l its var. .ittdotiifcra 

 and A. coiirctnta of the Michigan Flora. 



Calamagrostis conjinis of the Michigan Floia becomes G.inexpansa A. Gr. 



G. hyperborea Lange should be looked for along the south shore of Lake 

 Superior as it is known to occur in Minnesota and Northern Vermont. 



