SCIENTIFIC AND POPULAR. 20S 



i. I. hederdcea (L. )Jacq. (Con v. hederaceus L., C. Nil L., P. 

 Nil Choisy, I. Nil Roth, I. triloba Thunb. ). Tropical Amer- 

 ica, nat. in southern U. S. and widely elsewhere. Blue Morn- 

 ing-glory. Boasted seeds, in India called Kaladana, in Japan 

 Kengashi, used as a purgative. Varieties of this and of (j) 

 I. purpurea Lam. are the garden Morning-glories. 



k. I, leptophylla To-r. Nebraska to New Mexico and Texas. 

 Bush Morning-glory, Man-root. 



1. I. Orizsibensis (Pel.) Ledan. (Conv. Orizabensis Pelletan). 

 Mexico. Tuberous roots; Male Jalap, Fusiform or Woody Jalap, 

 Jalap-stalks; Ger. Falsche Jalape, Jalapenstengel; purgative, 

 (m) I. siuiulans Hanbury. Mexico. Source of Tarapico 

 Jalap or Sierra Gordo Jalap. See Exogonium, to which pos- 

 sibly these species belong. 



n. I. pandurata (L. ) Meyer (Conv. panduratus L. ). Ontario 

 and eastern U. S. Man-root, Man-of-the-earth, Hog Potato, 

 Wild Potato, Wild Sweet-j)Otato, Wild Jalap, Mechoacanna, 

 Mechamech (of the aborigines), Scammony-root, Wild Scam- 

 mony. Tubers feebly cathartic. 



1067. IRESINE, P. Br. Blood-leaf, etc. Amaraiithaceae. 



From Greek, alluding to ''woolly" calyx. Herbs, annual or 

 perennial. About 20 species, warm and temperate regions; 2 

 in U. S. (a) I. paniculata (L. ) Kze, southern U. S. and 

 southward, is called Blood-leaf, Juba's-bush and Juba's-brush. 



1068. IRIS, L. Fleur de lis. Blue Flag, etc. ^ Iridaeeae. 



From Greek, "rainbow". Herbs from creeping root stocks. 

 About 100 species, mostly of north temperate zone; 22 in U. S. 



a, I. Florentina L. Southern Europe, Florentine Orris (i. e. Iris )y 



White Flag, Florence or Sweet Flower-de-luce. Rhizome of 

 this and two following species; Orris-root; Rhizoma iridis, 

 Kadix iridis florentinse, R. ireos; Ger. Irisrhizom, Vielchen- 

 wurzel, Violfcnwurzel, Schwertelwurz; Fr. Iris de Florence 

 (Codex); Sp. Liria de Florencia; acrid, sternutatory, but chiefly 

 used in deniifr ces, cosmttic powders, etc. Sometimes used for 

 issue peas (Pois d'iris de Paris) 



b. I, Germanica L. Southern Europe, northern Africa to India^ 



cult, and adv. in U. S. European Blue Flag, German Iris or 

 Orris; Ger. Blauer Schwertel, Schwertlilie; Fr. Flambe, Fleur de 

 lis (corrupted in English to Flower de luce). This species, 

 also (c) I. pallida Lam., Southern Europe to Syria, Pale 

 Blue Flag, have properties and uses of (a). 



d. I, prismatica Pursh. (I. Virginica Muhl. not L., I. gracilis 



Bijjel. ) New Brunswick to N. Carolina. Slender Blue Flag, 

 Poison Flag. Properties of (g). 



e. I. Pseudaconis L. Europe, adv. in U. S. Yellow Flag, False 



Sweet-flag, Daggers, Corn Flag, Yellow Water-flag, Sword Flag^ 

 J acob's-sword. Flagons, Yellow Water-skegs, Water-seg. SeedL 

 used for coffee. 



