IRIS FAMILY. 449 
DIOSCOREACEAE. Yam Family. 
DIOSCOREA IL. Sp. Pl. 2: 1032. 1753. 
About 150 species, perennial climbers, of the warmer parts of the globe, largely 
American, Japan. 
Dioscorea villosa L. Sp. Pl. 2: 1033, 1753. WILD YAM. 
Ell. Sk. 2:704. Gray, Man. ed. 6, 517. Chap. Fl 474. Coulter, Contr. Nat. 
Herb. 2: 430. 
Alleghenian to Louisianian area, Southern Ontario, southern New England; 
throughout the Atlantic States to Florida and Texas. 
ALABAMA: All over the State, in damp woods. Cullman, Tuscaloosa, Jackson, 
Clarke and Mobile counties. May; frequent. 
Economic uses: The root, under the name of ‘wild yam root,” is used nonofficially 
in medicine. 
Type locality: ‘“Hab.in Virginia, Florida.” 
Herb. Geol. Surv. Herb. Mohr 
IRIDACEAE. Iris Family. 
IRIS L. Sp. Pl. 1:38. 1753. 
Near 100 species, perennials, warmer and temperate zones of the Northern }lemi- 
sphere. North America, 20. Japan. 
Iris versicolor L. Sp. Pl. 1:59. 1753. BLUE FLAG, 
EM, Sk. 1:45. Gray, Man. ed. 6, 5138. Chap. Fl. 472. 
Canadian zone to Louisianian area. Newfoundland, Ontario, Manitoba, New 
England west to Minnesota and Nebraska, south to Florida and Louisiana, 
ALABAMA: Throughout the State. Marshes, ponds. Montgomery, Mobile, and 
Baldwin countics, Flowers azure. April. 
Economic uses: The rhizoma, under the name of ‘blue flag root” is used medic- 
inally. 
Type locality: ‘‘Hab.in Virginia, Marilandia, Pensylvania.” 
Ilerb. Geol. Surv. Herb. Mohr. 
Iris hexagona Walt. Fl. Car. 66. 1788. SOUTHERN BLUE FLAG. 
Tris virginica Michx. I'l. Bor. Am. 1:22. 1808. 
EM. Sk.1:46. Chap. Fl ed.3,500. Britt. & Br. Il. Fl. 1: 448, f. 1070. 
Louisianian and Carolinian areas. Texas and Louisiana to Florida and South 
Carolina; Missouri, Kentucky (Britton & Brown). 
ALABAMA: Coast plain in the tide-water region, Open deep marshes. Mobile 
County, estuary of Mobile River and adjacent marshes, with /ris versicolor, Cicuta 
maculata, ete. 
Flowers April. Outer perianth deep cerulean blue with an orange-yellow, sparsely 
hairy crest, inner pale azure. One and one-half to 3 teet high. Abundant. 
Type locality: South Carolina. 
Iris verna L. Sp. Pl.1:39. 1755, DwakF IRIs. 
Gray, Man. ed. 6,514. Chap. Fl. 473. 
Carolinian and Louisianian areas. Western Pennsylvania, Kentucky south from 
Virginia to Georgia. 
ALABAMA: Coast Pine belt. Dry pine ridges. Washington County, Yellowpine. 
Escambia County, Flomaton. Monroe County. Baldwin County, Stockton. Mobile 
County, Springhill. March, April. Flowers pale azure, Frequent, 
Economic uses: Planted for ornament, 
Type locality: ‘‘ Hab. in Virginia.” 
Herb. Geol. Surv. Herb. Mohr, 
Iris cristata Ait. Hort. Kew. 1:70. 1789. CRESTED IRIS. 
El. Sk.1:44. Gray, Man. ed.6,514. Chap. F1. 473. 
Carolinian area. Maryland, Virginia to Iowa, sonth to North Carolina, and along 
the mountains to Georgia. 
ALABAMA: Mountain region to Lower hills. Damp,shady banks. Winston County, 
Colliers Creek, 1,500 feet. Cullman County. Tuscaloosa County (£. A. Smith). 
Flowers pale blue. April, May; not frequent. 
Economic uses: Ornamental plant, grown in borders. 
Type locality: ‘‘ Native of North America.” 
Herb. Geol. Surv. Herb. Mohr. 
15894——29 
