THISTLE FAMILY. 795 
ACANTLOSPERMUM Schrank. Pl. Rar. Hort. Monae, 2:4. 58. 1819. 
Four species, annuals, South America. 
Acanthospermum australe (L.). 
Melampodium australe L. Sp. Pl. ed. 2, 2:1309. 1763. 
Acanthospermum brasilum schrank. Pl. Rar. Hort. Monac. 2:t. 33. 1819. 
Centrospermum xanthioides H. B. K. Nov. Gen. &. Sp. 4:271, 1820. 
Acanthospermum canthioides DC. Prodr.5:521. 1836. 
Chap. FL. Suppl. 628; ed.3, 240. Gray, Syn. Fl. N, A. 1, pt. 2: 239, 1884. 
SourH AMERICA TO BRaZIL. 
Louisianian area, Adventive in South Carolina and Florida. 
ALABAMA: Lower Pineregion. Coast plain. Waste ground; along railroad tracks. 
Escambia 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. 5:522. 1836. 
Melampodium humile Sw. Prodr. Veg. Ind. Occ. 114. 1785. 
Chap. Fl. ed. 3,240. Gray, Syn. FIN. A. 1, pt. 2: 240. 
WEsT INDIEs TO BRAZIL. 
Louisianian area, Adventive. Ports of western Florida and occasionally at New 
York and Philadelphia. 
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 DC. Prodr. 5:517. 1836. 
Four species, perennials, South Atlantic North America and adjoining Sonoran 
(Texano-Mexican) region. South Atlantic, 2. 
Berlandiera pumila (Michx.) Nutt. Trans. Am. Phil. Soc. ser. 2, 7 7342, 1840. 
‘ Downy BERLANDIERA. 
Silphium pumilum Michx. 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. FI.N. A. 1, pt.2:243. 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. Pl. 2:920. 1753. 
One species, Atlantic North America. 
-Chrysogonum virginianum L. Sp. Pl. 2:920. 1753. GOLDEN Daisy. 
Ell. Sk. 2:472. Gray, Man. ed. 6, 271. Chap. Fl. 219. Gray, Syn. Fl. N. A.1, pt. 
2:243, ee met 
Carolinian and Louisianian areas. Southern Pennsylvania to Florida and Louisiana. 
AvaBaMa: Lower Pine region. Coast plain. Dry open woods. Mobile County, 
sandy pine ridges. Flowers golden yellow; March, April. Notcommon. Perennial, 
Type locality: ‘‘ Hab. in Virginia.” 
Herb. Geol. Surv. Herb. Mohr. 
PARTHENIUM L. Sp. Pl. 2: 988. 1753. 
Ten species, perennials, West Indies, Mexico. North America, 7. 
Parthenium hysterophorus L. Sp. Pl. 2:988. 1753. 
Chap. Fl. 222. Gray, Syn. F1.N. A. 1, pt.2: 244. Coulter, Contr. Nat. Herb. 2: 207, 
West Inp1&s, MEXICO. ; : 
Louisianian area. Florida to Louisiana, Most probably naturalized from the 
Tropics. _ 
