LXXVIIl. 

 IRIS PSEUD-ACORUS. 



Yellow Flag, or Water Iris. 



Class III. Triandria. — Order I, Monogynia. 



Nat. Ord. Iride^. 



Gen. Char. Perianth siogle, petaloid, six-cleft, each al- 

 ternate segment longer and reflexed. Stigmas three, 

 petaloid, covering the stamens. 



Spec. Char. Leaves flat, ensiform. Perianth beardless, 

 its inner segments smaller than the stigma. 



SYNONYMES. 



Acorns adulterinus. Bauh. Pin. 34. 



Iris palustris lutea. Gen. Em. 50. Rail Syn. 374. 



Acorus palustris seu Pseudo-iris lutea palustris. Park. 

 Latin -{ Theatr. 1219. 



Acorum, Gladiolus luteus. Fucks, 13, c. 4. 



Iris Pseud-acorus. Lin. Sp. PL 56. Ent;. Fl. i. p. 48. 

 i^ Eng. Bot. t. 578. 



French Iris des marais ; Glayeul des marais. 



Italian Iride Gialla ; Acoro bastardo. 



Spanish. Acoro bastardo ; Lirio espadanal. 



Portuguese. . . . Lirio amarelho dos charcos. 



German Wasserschwurtel ; Gelbe Schwertlilie. 



Dutch Geel Lisch ; Valsch Lis. 



Danish ...... Swoerdlilie. 



Swedish SvardsUlja. 



Polish Mieczyk z'olty. 



Russ Kasatnik. 



Hungarian... Sarga vizi Lilioin. 



Description. — The rhizoma is fleshy, tuberous, horizontal, 

 blackish externally, yellowish red and spongy within, and 



