THISTLE FAMILY. 795 
ACANTLOSPERMUM selirank. P]. Rar. Hort. Monac, 2;¢, 53, 1819. 
Four species, annuals, South America, 
Acanthospermum australe (L.). 
Melampodium australe L, Sp. Pl. ed. 2, 2: 1809, 1763. 
Acanthospermum brasilum >chrank. Pl. Rar. Hort, Monac. 2:6. 90, 1819. 
Centrospermum canthioides H. B. Kk. Nov, Gen. & Sp. 42271, 1820, 
Acanthospermum xanthioides DC. Prody, $2521. 1856, 
Chap. FL Suppl. 628; ed.3, 240. Gray, Syn. FIN, A. 1, pt. 2: 259. 1884, 
SoutH AMERICA TO BRAZIL. 
Louisianian area. Adventive in South Carolina and Florida. 
ALABAMA: Lower Pineregion. Coast plain. Waste ground; along railroad tracks. 
Eseambia and Mobile counties. Flowers greenish white; June to October. A fre- 
quent ballast weed. Reported from Lee County, Auburn. 
Type locality: ‘ Hab. in Cumana.” 
Herb. Geol, Surv. Herb. Mohr. 
Acanthospermum humile (Sw.) DC. Prodr, 52522. 1836. 
Melampodium humile Sw. Prodr. Veg, Ind, Oce, 114. 1785. 
Chap. Fl. ed. 3,240. Gray, Syn. PLN. A. 1, pt. 2: 240. 
West INDIES TO BRAZIL. 
Lonisianian area. Adventive. Ports of western Florida and oceasionally at New 
York and Philndelphia. 
ALABAMA: Ballast grounds, Mobile County. July to October. Obnoxious and 
persistent ballast weed, spreading slowly along the river front. 
Type locality: ‘Jamaica, Domingo.” 
Herb. Geol. Surv. Herb, Mohr. 
BERLANDIERA DU. Prodr. 5:517. 1836. 
Four species, perennials, South Atlantic North America and adjoining Souoran 
(Texano-Mexican) region. South Atlantic, 2. 
Berlandiera pumila (Michx.) Nutt. Trans. Am. Phil. Soc, ser. 2,7: 342. 1s40, 
Downy BERLANDIERA, 
Silphium pumilum Miehx. Fl, Bor. Am. 2: 146, 1803. 
Berlandiera tomentosa Nutt. Trans. Am. Phil. Soc. ser. 2, 7:343, 1840, 
Ell. Sk. 2:469. Chap. Fl. 221. Gray, Syn, Fl. N. A. 1, pt. 2: 2438. Coulter, Contr. 
Nat. Herb, 2: 206. 
Louisianian area. North Carolina to Florida and Arkansas. 
ALABAMA: Coast plain. Sandy pine forests. Baldwin County, Blackwater River. 
Flowers yellow; July. Rare. 
Type locality: ‘‘Hab. in Florida.” 
Herb. Geol. Surv. Herb. Mohr, 
CHRYSOGONUM L. Sp. P1.2:920. 1753. 
One species, Atlantic North America. 
Chrysogonum virginianum I, Sp. Pl. 2:920. 1753. GOLDEN DalIsy. 
Ell. Sk. 2:472. Gray, Man. ed. 6, 271. Chap. Fl. 219, Gray, Syn. FIN. A. 1, pt. 
272245. 
Carolinian and Louisianian areas. Southern Pennsylvania to Florida and Louisiana, 
ALABAMA: Lower Pine region. Coast plain. Dry open woods. Mobile County, 
sandy pine ridges. Flowers golden yellow; March, April. Not common, Perennial. 
Type locality: *‘ Hab. in Virginia.” 
Herb. Geol. Surv. Herb, Mohr. 
PARTHENIUM L..&p. P12: 988. 17538. 
Ten species, perennials, West Indies, Mexico. North America, 7. 
Parthenium hysterophorus L. Sp. P1.2: 988. 1753. 
Chap. Fl. 222. Gray, Syn. FIN. A. 1, pt. 2: 244. Coulter, Contr, Nat. Herb. 2: 207. 
WEsT INDIES, MEXICO. 
Louisianian area. Florida to Louisiana, Most probably naturalized from the 
Tropics. 
