72 Tennessee Flora. 



ARISTOLOCHIACE^ Blume. 

 ASARUM L. 



Asarum Canadense L. Wild ginger: Woodlands. , O. S. 

 Banks of Cumberland River at Nashville. April, May. M. 



A. Virginicum L. Cumberland and Alleghany Mts. May, 

 June. 



A. macranthum (Shuttlw.) Small. Valley of Ocoee River 

 at Parksville. May. 



A. arifolium Michx. Mts. of E. Tenn. April- June. 



A. Ruthii Ash. n. sp. Hiwassee Valley. A. Ruth. 



ARISTOLOCHIA L. 



Aristolochia Serpentaria L. Virginia snake root. Bluffs 

 along Cumberland River, Nashville. E. and M. Tenn. June, 

 July. Fruit in September. M. 



A. macrpphylla Lam. A. Sipho. L'Her. Dutchman's pipe. 

 Mts. of E. Tenn. Along Doe River. May, June. Fruit ripe 

 in September. 



A. tomentosa Sims. Valley of Cumberland River. May, 

 June. Fruit in August. 



• POLYGONACEiE] Lindl. 



RUMEX L. 



. Rumex Acetosella L. Sheep sorrel. In dry fields. O. S. 

 May-Septembei'. M. 



R. verticillatus L. Swamp dock. Swamps along Cumber- 

 land River. July, August. 



R. altissimus Wood. R. Britannica A^eisson. Moist ground 

 or ditches. O. S. April, May. 



R. crispus L. Curled dock. Native from Europe. O. S. 

 June-August. M. 



R. conglomeratus Mun. Waste places. Nashville. May- 



July- 



R, obtusifolius L. Bitter dock. O. S. Naturalized from 

 Europe. June-August. 



FAGOPYRUM Gaut. 



Fagopyrum Fagopyrum (L.) Karst. F. esculentum Moench. 

 Buckwheat.. Frequently cultivated on the Cumberland Pla- 

 teau, and persistent in fields after cultivation. June, July. 



RHEUM L. 



Rheum palmatum L. Rhubarb. 



Rh. compactum L., with their varieties, are important prod- 

 ucts of the market gardens. 



