94 TENNESSEE FLORA. 



Var. campestre. Root leaves forming flat tufts; appressed 

 to the soil, forming tufts. This is the most common form. 



Var. a^reste. Stout and very hairy; panicle very large 

 and widely divaricated ; forming no tufts. Common. In loose 

 ground, fields and gardens. 



'"^ Var. flexile Gattinger. Thin, elastic and upright, with 

 smaller panicle and acute flowers. Closely resembles P. autum- 

 nale Bosc. Characteristic of the cedar glades. July-September. 



Var. iiiinimiini Engelman. Dwarf, resembling P. depau- 

 peratum. Poor, loamy and siliceous soil of the highlands. July- 

 August. 



P. claiidestiniim L. Along the banks of Cumberland river, 

 in the canebrakes; also in East Tenn., in rich bottom lands. 

 July-September. 



Var. peduncnlatnm Torr. , With the former. 



P. colouum L. Ponds and ditches around Nashville, Lavergne, 

 etc. September-October. 



P. commutatum Schultz. (P. nervosum Miihlb.) Woods, rich 

 and loose soil, over the State. May-August. 



P. cms-galli L. Ponds and ditches everywhere. July-Sep- 

 tember. 



Var. liispidum Miihlb. 



Var. miiticum Vasey. With the former. 



P. depauperatuin Miihlb. Dry copses and woodlands. High- 

 lands. May-June. 



P. dichotomuiii L. Over the State, in many varieties. 

 Var. iiitidimi Lam. In the cedar glades. 

 Var. pubescens. Woods, etc. 



Var. bai'bulatuiii Gray. Highlands, in siliceous soil. 

 Var. sphjei'oearpon Gray. Earliest in the glades. April- 

 May. 



P. flliforme L. Argillaceous and siliceous soils. August- 

 September. 



*Panicum capillare L., var. fl^-xile Gattinger, is either one of the 

 forms of P. capillare, or an annual variety of P autumnale Bascoe, which 

 it resembles greatly, e.-pecially in smoothness and form of spikelets. It is 

 very smooth above, with some hairs on ihe lower part of culm and leaves; 

 culm very slender, panicle rather small, and branches not spreading until 

 the mature spikelets are ready to drop oti"; leaves linear, gradually atten- 

 uate, of a pale green color. It abounds in the cedar glades, and is rarely 

 seen outside of them. 



