Tennessee Flora. 155 



RUBIACE.E B. Juss. 

 HOUSTONIA L. 



Houstonia cocerulea L. Bluet. ^loist, open ground. O. S. 

 April-June. 



H. serpyllifolia Michx. Covering the ground on the high 

 summits of the Alleghanies. May. 



H. minor (Michx.) IVitton. H. patens Ell. Cedar glades. 

 March, April". 



H. minima Beck. I'noxville. Fort Saunders. A. Ruth. 

 March, April. 



H. purpurea L. Oldenlandia purpurea A. Gray. O. S. 

 . H. purpurea var. pubescens Britton. With the former. 



H. purpurea var. calycosa. Similar localities with the for- 

 mer. ]\ lay-September. 



H. tenuifolia Nutt. Throughout the mountains of E. Tenn. 

 Wolf Creek. August, September. 



H. angustifolia Michx. Copiously in the cedar glades. 

 Bluffs of Cumberland River, at Nashville. May-July. 



OLDENLANDIA L. 



Oldenlandia Boscii Chapm. Ditches along railroad at Tul- 

 lahoma. 



CEPHALANTHUS L. 



Cephalanthus occidentalis L. Button bush. Swamps and 

 wet ground. O. S. June-September. M. 



MITCHELLA L. 



Mitchella repens L. Partridge berry. \\'oods. O. S. 

 April-June. M. 



SPERMACOCE L. 



Spermacoce glabra L. Smooth button weed. Wet soil. 



O. S. June-September. 



DIODIA L. 



Diodia teres Walt. Old fields.* O. S. July-September. 

 D. Virginiana L. Wet lands, covering fields. June-Au- 

 gust. 



GALIUM L. 



Galium Aparine L. Cleavers. Fence rows and shady 

 grounds. O. S. April, May. M. 



G. virgatum Nutt. Dry ground in the cedar glades at La- 

 vergne. Knoxville. A. Ruth. April-June. 



G. Parisiense L. G. anglicum Huds. Knoxville. A. Ruth. 



