114 Tennessee Flora. 



E. obtusata Pursh. Frequent in g-lades around Xashville. 

 March-June. 



E. commutata Engelm. Cedar barrens of M. Tenn. April. 



E. mercurialina Michx. Stoner's Creek, Wilson County. 

 Tunnel Hill, Sumner County. Lookout Mt. May-July. 



CALLITRICHACE.E Lindl. 

 CALLITRICHE L. 



Callitriche Austin! Engelm. Water starwort. On mud 

 banks along streams. Xashville. July. 



C. heterophylla Pursh. Ponds near Nashville. July-Sep- 

 tember. . 



BUXACE.E Dumirt. « 



PACHYSANDRA Michx. 



Pachysandra procumbens Michx. Dr. Hampton's farm. Da- 

 vidson County. White Bluff, Dickson County. Beersheba 

 Springs, Grundy County. Col. Wilkins. April, May. 



ANACARDE\CE.F: Lindl. 

 RHUS L. 



Rhus copallina L. Darf sumac. Poor, siliceous soils. O. 

 S. June-August. ■ 



R. hirta (L.) Ludw. R. tyhina L. Staghorn sumac. Hill- 

 sides. O. S. June. 



R. glabra L. Scarlet sumac. Old fields. O. S. June- 

 August. ^f. 



R. aromatica Ait. R. Canadensis ^larsh. Limestone re- 

 gions of ^I. Tenn. March, April. M. 



R. trilobata Nutt. Rh. aromatica var. trilobata Gray. Oc- 

 curs over the same range. .1/. 



R. Vernix L. R. venenata DC. Poison sumac. Poison 

 ash. Boggv lands in the Cumberland Mts. Sewanee. June. 

 .1/. 



R. radicans L. R. Toxicodendron Michx. Poison oak. E. 

 Tenn. May. June. .V. 



R. Toxicodendron L. With crenately-lobed, verv-pubescent 

 leaves. X'ashville. .!/. 



COTINUS Adans. 



Cotinus cotinoides (Xutt.) Britton. R. cotinoides Nutt. 

 Southern border of the State. Limestone County, .-Ma. Dr. 

 Charles Mohr. April, A-Iay. 



