CYRILLA FAMILY. 601 



ber. Drupes white. Tall sLnih 10 to IX feet high; f'n'<iueutly iirborcscfut. Most 

 abundant in the pine-barren swamps of the Coast Pine belt. Lea\ es extremely poi- 

 sonous to the touch. 



Type locality : " Hab. in America scpteutrionali, Japonia." 



Herb. Geol. Surv. Herb. Mohr. 



Rhus radicaus L. Sp. PI. 1:266. 17.53. Poisox Ivy. Poisox Vine. 



Rhus foxicodendron radicans Torr. Fl. U. S. 324. 1824. 



It. tosicodendron var. vuhjare Michx. Fl. Bor. Am. 1: 183. 1803. 



Ell. Sk. 1 : 363. Gray, Man. eel. 6, lit), in part. Chap. Fl. 69. 



Sakhalin, .Iapan, Kurile Islands, Mexico. 



Alleghenian to Louisianian area. Nova Scotia, Ontario; New England west to 

 Dakota and Arizona, south to the Gulf from Florida to western Louisiana and 

 Arkansas. 



Alabama: Throughout. In rich damp woods. Bottom lands. Flowers white, 

 May ; fruit ripe in August and September. A stout root climber, ascending the 

 highest trees; lateral branches 3 to 4 feet long. Also creeping on the ground and 

 over rocks. Leaves soft, entire, more or less toothed and incised. Like the last, 

 poisonous to the touch. 



Economic uses: The fresh leaves are used medicinally, being the " Rhus toxico- 

 dendron' of the United States Pharmacopdia. 



Type locality : "Hab. in Virginia, Canada." 



Herb. Geol. Surv. Herb. Mohr. 



Rhus toxicodendron L. Sp. PI. 1:266. 1753. Poison Oak. 



Bhus toxicodendron var. quercifoJlum Michx. Fl. Bor. Am. 1:183. 1803. 



EU. Sk. 1:363. Gray, Man. ed. 6, 119, in part. Chap. Fl. 69. Coulter, Contr. 

 Nat. Herb. 2 : 68, in part. 



Carolinian and Louisianian areas. New .lersey to Florida and Texas. 



Alabama : Throughout, but much less frequent. In dry sterile soil, barren hill- 

 sides and pine barrens. Flowers greenish white; April. Fruit ripe in August and 

 September. Drupes white. Low shrtib. 1 to scarcely 2 feet high, with an erect, 

 slender stem from a creeping slender root, never climbing, leaves thick, obtusely tri- 

 lobed. Most fre(|uent in the sandy pine ridges of the Coast Pine belt. Forms inter- 

 grading with the last have not been met with. Leaves equally deleterious. 



Type locality : '• Hab. in Virginia, Canada." 



Herb. Geol. Surv. Herb. Mohr. 



Rhus aromatica Ait. Hort. Kew. 1:367. 1789. FhactRant Sumach. 



Rhus canadensis Marsh. Arb. Am. 129. 1785. Not Nntt. 



Ell. Sk. 1 : 364. Gray, Man. ed. 6, 119. Chap. FL 69. Coulter, Contr. Nat. Herb. 

 2 : 68. 



Alleghenian to Louisianian area. Ontario and New England; Vermont west to 

 Michigan, south to West Virginia; Ohio Valley to Missouri, southern Kansas, Arkan- 

 sas, and Texas, and from Tennessee to Georgia and western Florida. 



Alabama : Tennessee Valley. Mountain region to the Upper division of Coast Pine 

 belt. Clay County, Che-aw-ha Mountain, 2,400 feet. Madison County, Hanks of 

 Montesano, 600 to 800 feet. .Jackson County, Gurley's, 800 feet. Dekalb County, 

 Lookout Mountain, 800 feet. Blount County, Warnock Mountain, 800 feet. Dale 

 County, Ozark, scarcely over 2.50 feet above the sea. Flowers yellowish, March, 

 April. Fruit ripe in .June; drupes scarlet, aromatic. A slender slirub, 8 to 12 feet 

 high, with wandlike branches. Most frequent on the calcareous slopes of the Ten- 

 nessee Valley. 



Type locality: "Native of Car<dina. Mr. .John Bartram." 



Herb. Geol. Surv. 



CYRILLACEAE. Cyrilla Family. 



CYRILLA L. Mant. 1:50. 1767. 



One species, southeastern North America. 

 Cyrilla racemiflora L. Mant. 1 : 50. 1767. Leatherwood. Black Ti-ti. 



Ell. Sk. 1 : 294. Chap. Fl. 272. Sargent, Silv. N. A. 2 : 3, t. 51. 



Louisianian area. Western Florida along the coast to North Carolina and west to 

 eastern Louisiana. 



Alabama : Central Pine belt to Coast plain. Sandy swamps, borders of i)ine-barren 

 streams. Autauga County {E. A. Smith). Lee County, Auburn {Baker <S' Barle). 



