(§9) 



Dahurian buckthorn, growing wild from central Asia to 

 the Amur region, and the purging buckthorn of Europe, 

 the berries of which are medicinal, are here; from the juice 

 of the ripe fresh berries of the purging buckthorn, mixed 

 with alum, is made the pigment, known as sap-green or 

 bladder green, used by water-color artists. Close to this 

 is the linden family, represented by the genus Grezvia. 

 The mallow family, further along the path, is represented 

 by specimens of the rose-of-Sharon {Hibiscus syriacus), 

 from western Asia, and often found escaped from cultiva- 

 tion in the eastern United States; many herbaceous repre- 

 sentatives of this family may be found at the herbaceous 

 grounds. Near the mallow family is the tea family, 

 represented by the mountain Stuartia, from the south- 

 eastern United States; other members of the tea family, 

 including the tea plant and the common camellia, may be 

 found in the conservatories. Also near the mallows may 

 be found the St. John's-wort shrubs (Hypericum), with 

 their showy yellow flowers. Farther on, where the path 

 bends to the left, is the tamarix family, represented by 

 several species of tamarix, Old World plants. Next comes 

 the mezereon family, having as a representative the 

 leather- wood or moose-wood (Dirca), of the eastern parts 

 of North America; the name leather- wood refers to the 

 very tough inner bark; the bark is a violent emetic; the 

 daphnes are of this family, and here will be found the 

 garland-flower, the spurge flax, and the Chinese daphne. 

 Some distance from the path and opposite the Woodlawn 

 Road entrance, is the oleaster family, including several 

 species of oleaster, the buffalo berry and the sea-buckthorn, 

 a native of Europe, the berries of which are acrid and poi- 

 sonous; the berries of several of the species of oleaster are 

 edible; the buffalo berry, of northwestern North America, 

 is largely eaten by the Indians of that region; the berries 

 of the oriental oleaster, known as Trebizond dates, are 

 made into cakes by the Arabs, after having been dried. 

 Plants of the ginseng family form a group opposite the 



