WASHINGTON, AND MARION COUNTIES. 39 



Genus Viburnum^ Arrow-wood, 



288. Sweet Viburnum, Viburnum Lentago (L.) 



289. Black Maw, V. prunifolium (L.) 



290. Arrow wood, V. dentatum (L.) 



291. Maple-leaved Arrow-wood, V. acerifoiium (L.) 



ORDER RUBIACEJ2— MADDEE FAMILY. 

 Genus Galium, Bedstraw. 



292. Goose Grass, Galium Aparine (L.) 



293. Rough Bedstraw, G. asprellum (Michx.) 



294. Small Bedstraw, G. trifidum (L.) 



295. Sweet-scented Bedstraw, G. tri riorum (]\Iichx.) 



Genus Gephalauthus, Button-bush. 



296. Button-bush, Cephalanthus occidentalis (L.) 



Genus Houstonia, Houstonia. 



297. , Houstonia purpurea (L.) 



298. , Var. longifolia. 



299. , II. augustifolia (Michx.) 



300. Bluets, II. caerulea (L.) 



ORDER DIPSACE^— TEASEL FAMILY. 

 Genus Dipsaeus, Teasel. 



301. Wild Teasel, Dipsaeus sylvestris (Mill.) 



ORDER C< >MPOSITiE— COMPOSITE FAMILY. 

 Genus I r ernonza, Iron-weed. 



302. Iron -weed, Vernonia Noveboracensis (Willd.) 



Genus Elephant opus, Elephant 's-foot. 



303. Elephant's foot, Elephantopus Carolinianus (Willd.) 



Genus Eupaloriuni, Thoroughwort. 



304. Joe Pye Weed, Eupatorium purpureum (L.) 



305. Hyssop leaved Thoroughwort, E. hyssopifolium (L.) 



306. White Boneset, E. album (L.) 



307. Tall Thoroughwort, E. altissimum (L.) 



308. Upland Boneset, E. sessili folium (L.) 



309. Boneset, E. perfoliatum (L.) 



310. White Snakeroot, E. ageratoides (L.) 



