790 PLANT LIFE OF ALABAMA. 



Two and erne-half to I feet high, stem stont, sulcate to angled, leaves thinner and 

 larger thau in the above, from li to 3 inches ami over wide, pointed at both ends, 

 tapering into slender petioles $ to 1 inch long: flowering heads smaller, with merely 

 resinous-grauulose (not pubescent) involucral scales. Flowers pale purplish brown. 



Carolinian and Lonisianiau areas. Kentucky. Indiana, Ohio, Tennessee, North 

 Carolina to Florida, west to Mississippi. 



ALABAMA: Over the State. Low damp places, banks of streams, ditche.s, borders 

 of fresh-water swanips. Talladega and Tuscaloosa counties. Lee County, Auburn 

 (Baker j- Earle}. Montgomery, Mobile, and Baldwin counties; September, October. 

 Frequent. Annual. 



Type locality not ascertained. 



Herb. Geol. Surv. Herb. Mohr. 



Pluchea foetida (L.) B. S. P. Prel. Cat. N. Y. 28. 1888. 



Baccharis fottida L. Sp. PL 2 : 861. 1753. 



B. viscosa Walt. Fl. Car. 202. 1788. 



Pluchea Ufrons DC. Prodr. 5 : 451. 1836. 



Carolinian and Louisianian areas. Coast of New Jersey to Florida, west to Texas. 



Ell. Sk. 2 : 322. Gray, Man. ed. 6, 267. Chap. Fl. ed. 3, 238. Gray, Syn. Fl. N. A. 1, 

 pt. 2 : 226. Coulter, Contr. Xat. Herb. 2 : 201. 



ALABAMA : Lower Pine region. Coast plain. Low damp places, borders of ditches 

 and pine-barren ponds. Washington County, Yellowpine. Mobile and Baldwin 

 counties. Flowers white; August to October. Frequent. Perennial. 



Type locality : " Hab. in Virginia.'' 



Herb. Geol. Surv. Herb. Mohr. 



Pluchea adnata / Humb. & Bonpl.). 



Baccharis adnata Hurnb. & Bonpl. ; Willd. Enum. 870. 1809. 

 Pluchea subdecurrens Cass. Diet. Sci. Nat. 42 : 4. 1826. 



MEXICO. 



ALABAMA: Adventive with ballast. 



Perennial from a ligneous root; stem ascending H to 2 feet high, corymbosely 

 branched, winged by the decurrent base of the lanceolate, denticulate leaves, 

 which are on the lower side glandular-punctate; flowering heads sessile, crowded on 

 the ends of the branches. Not infrequent. Ripens the seeds and makes its appear- 

 ance one year after another in the same locality, without spreading. Annual. 



Type locality : " Hab. in America meridional!." 



Herb, Geol. Surv. 



PTEROCAULON Ell. Sk. 2 : 323. 1821-24. BLACK ROOT. 



Two species, perennial, South Atlantic North America. 

 Pterocaulon undulatum (Walt.). 



Gnaphalium undulatum Walt. ' 1. Car. 203. 1788. 

 Conyza polystacliya Michx. Fl. Bor. Am. 2 : 126. 1803. 

 Pterocaulon polystachyum Ell. Sk. 2 : 324. 1821-24. 

 Ell. 1. c. Chap. Fl. 219. Gray, Syn. Fl. N. A. 1, pt. 2 : 226. 

 Lousiauian area. Const of North Carolina to Florida. 



ALABAMA: Coast plain. Dry open grassy pine barrens. Baldwin County, about 

 the waters of Perdido Bay. Flowers white; May, June. Infrequent; not observed 

 farther to the west. 



Type locality: South Carolina. 



Herb. Geol. Surv. Herb. Mohr. 



ANTBNNARIA Gaert. Fruct. 2 : 410. 1791. 



About 36 species, Europe, Asia, America. North America, 12 ; Atlantic, 3. 



Antennaria plantaginifolia (L.) Richards. App. Frank. Jouru. ed. 2, 30. 1823. 



PLANTAIN-LEAF CUDWEED. 



Gnaphalium planlaginifolinm L. Sp. PI. 2 : 850. 1753. 



Ell. Sk. 2:327. Gray, Man. ed. 6, 267. Chap. Fl. 243. Gray, Syn. Fl. N. A. 1, pt. 

 2 : 233. Coulter, Contr. Nat. Herb. 2 : 202. 



Boreal region to Carolinian area. Hudson's Bay tnroughout Canada and the 

 Atlantic United States, Florida, Louisiana, and Texas. 



