ACORUS. 57 



Leaves broadly laciniate, raceme paniculate, hood 

 conconical, spur bent, nectaries erect In Oreg- 

 on and Kamskatka, different from the A. nas- 

 vtum of South Europe. 



9. A. OREGOJVSENSE Iluf. Smooth erect, 

 segments digitate, Sparted, segments pinnatifid, 

 narrow acute; fls. racemose erect, hood conical 

 very obtuse, spur strait-In Oregon, stem simple 

 1 or 2 feet, flowers large blue 5 to 10. Compare 

 with A. kelleri of Siberia. Seen alive in gar- 

 dens. 



Figures, Autikon rar. 2. Ic. N. Sp. 2. 



10. A. DELPHINIFOLIUM Decandole. Stem 

 erect downy above ; leaves with many pinnati- 

 fid segments, raceme few flowered, hood con- 

 vex acute. On some Islands of the N. W. 

 Coast. Stem 6 to 20 inches high. Called var. 

 A mericanam, and two other var. deemed vari- 

 eties of A. napclluc, by Hooker. 



ACORUS, well known Genus, which I have 

 increased to 6 species. I. A. verus of Asia. 

 2. A. gramineus of China. 3. A. Europeus 

 in med. fl. page 2, with three American species. 



1. A. AMERICANUS Raf. med. fl. fig. 1. Leaves 

 and scapes broad gladiate, scape longer ; spa- 

 dix submedial lateral, capsules oblona: acute. 

 From Canada to Missouri and Virginia. Esti- 

 va), 2 or 3 feet high. 



2. A. FLORIDANLS Raf. A. calamus Elliot 

 &c. Leaves broad gladiate longer, scape shor- 

 ter, triangular, one side concave, summit gladi- 

 ate; spadix near the end, stamens exserted 

 capsules oval obtuse. Florida to Carolina. 

 Scape only one foot high, fl. vernal. 



3. FLEXUOSUS Raf. fl. tex. 29. Leaves grami- 

 niform narrow shorter, scape longer flexuose 

 triangular, one side concave, end like leaf; spa- 



