Leaves broadly laciniate, raceme paniculate, hood 

 conconical, spur bent, nectaries erect — In Oreg- 

 on and Kainskatka, different from the A. nas- 

 vtuin of South Europe. 



9. A. oREGoissENSE Raf. Smooth erect, 

 segments digitate, Sparted, segments pinnatifid, 

 narrow acute; Hs. 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. DELPHINIFOLIU3I Decaudolc. Stem 

 erect downy above ; leaves with many pinaati- 

 fid segments, raceme few flowered, hood con- 

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

 Coast. Stem to 20 inches high. Called var. 

 Aniericnnam^ and two other var. deemed vari-* 

 eties of A. napelluc^ by Hooker. 



ACORUS, well known Genus, which I have 

 increased to G species. 1. A, veras of Asia. — = 

 2. A. gramlneus of China. 3. A. Eiuropeiis 

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



1. A. AMERicANus Raf. mcd. fl. fig. 1. Leaves 

 and scapes broad gladiate, scape longer ; spa- 

 dix submedial lateral, capsules oblonsr acute. — 

 From Canada to Missouri and Virginia. Esti- 

 val, 2 or 3 feet high. 



2. A. FLORiDANLs Raf. A. calamus Elliot 

 &LC. Leaves broad gladiate longer, scape shor- 

 ter, triangular, one side concave, sunnnit gladi- 

 ate ; spadix near the end, stamens exserted 

 capsules oval obtuse. — Florida to Carolina. — = 

 Sca-pe only one foot high, fl. vernal. 



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

 niform narrow shorter, scape longer flc'xuose 

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



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