ACORUS. 57 



Leaves broadly laciniatc, raceme paniculate, hood 

 conconical, spur bent, nectaries erect— In Oreg- 

 on and Kamskatka, different from the A. fias- 

 vium of South Europe. 



9. A. OREGONSENSE Raf. Smooth erect, 

 segments digitate, 5parted, segments pinnatifid, 

 narrow acute; fls. racemose erect, hood conical 

 very obtuse, spur strait-In Oregon, stem simple 

 1 or 2 feet, flowers large bide 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 Dccandole. 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. 

 Atnericnnam^ 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, venis 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 oblong acute. — 

 From Canada to Missouri and Virginia. Esti- 

 val, 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 fle.\iiose 

 triangular, one side concave, end lik? leaf; spa- 



