202 PLANT NAMES AND SYNONYMS 



a. I. Heleiiium L. ( Cor. Helenium Merat, A. Helenium Scop. ). 



Central Asia and Europe, nat. in U. S. Elecampane (Alli- 

 campane, Alicompane, Aligfopane), Elf Dock, Elfwort, Horse- 

 heal, Horse-elder, Inul, Scabwort, Yellow Starwort, Velvet 

 Dock, Wild Sunflower; Ger. Alant, Glockenwurzel, Ottwurz^ 

 Fr. Aunee officinale, Grande aunee (Codex). Root; Inula, 

 U. S. P., Radix helenii v. inulae v. enulse; diuretic, expectorant,, 

 reputed bactericide. Candied root a popular cough remedy. 



b. I. sqiiarrosa (L. )Bemh. (Con. squarrosaL., I. Conyza DC). 



Europe. Plowman's Spikenard, Cinnamon-root, Flea wort*, 

 Lady's-glove; Ger. Diirrwurz; Fr. Conyze. Herb diuretic,. 

 emmenao:ogue, insecticide, (c) I. ci'ithmoides L. of southern 

 Europe is called Golden Samphire; (d) I. Oculus-Christi L. 

 (I. Oculus Schr. ), Europe, is called Christ' s-eye. 



1063. lODANTHUS, T. &Gr. Purple or False Rocket. Cniciferae. 



From Greek, ''violet" colored "flower". Syn. Hesperis, 

 Thelypodium, in part. Herb with violet or white flowers in 

 panicled racemes. One species, easternU. S. 



1064. lODINA, Hook. & Arn. lodina. Aqiiifoliaceae. 



Shrubs. Two species, South America; (a) I. rhoinbifolia 



H. & A. is Quebracho flojo. Wood and bark rich in tannin. 



1065. lONAC-TIS, Greene. Pine Starwort, etc. Compositae. 



From Greek, "violet rayed". Syn. Aster, Diplopappus, in 

 part. Aster-like perennial herbs. Three known species, all 

 of U. S. 



a. I, linariifolins (L.) Greene (A. linariifolius L. (Kew), D. 

 linariifolius Hook. ) Canada to Florida, west to Texas and 

 ;^[innesota. Stiff" Aster, Savory-leaved Aster, Sandpaper Star- 

 wort, Pine Starwort. 



1066. IPOMOEA, L. (Ipomsea, Ipomea). Convolvulaceae. 



From Greek, "worm like", alluding to twining stems. 

 Syn. Batatas, Calonyction, Convolvulus, Pharbitis, in part. 

 Herbs, usually twining or trailing. About 300 species, widely 

 distributed ; 33 in U. S. See also Exogonium. 



a. I. Batatas Poiret (B. edulis Choisy, Con v. tuberosa). Tropi- 

 cal America, now widely cult. Sweet Potato, Camote. Tubers 

 esculent. The following species among others yield also edi- 

 ble tubers; (b) I. Batatilla G. Don., Venezuela; (c) I. Calo- 

 bra Hill & Muell., Australia; (d) I. costdta F. Muell., Aus- 

 tralia; (e) I. graminea R. Br., Australia (Mallamak of the 

 natives); (f) I, luamiiiosa Choisy, Amboina; (g) I, plataui- 

 folia R. &S., Central America. 



h. I. Bona^nox L. (Cal. speciosum Choisy (Engler & Pranfl), 

 Cal. Bona-nox (L. ) Boj. ). Tropical America to Florida, 

 widely nat. [in tropical countries, also cult. Moon-flower, Moon 

 Creeper. 



