54 TENNESSEE FLORA. 



Silphinin pert'oliatiiiii T.. On Brown's (^reek, three miles from 

 Xa-hville. August. 



■-S. brachiahim Gattini>:er. First collected July, 1867, on 

 tlie foot of (Aimberland Mts., near Cowan, Tenn. 



S. integrifoliiliii Michx. Highlands: Charlotte pike; David- 

 son's place, near Nashville. July. 



S. seaberrimum Elliott. Barrens at Tullahoma. July. 



S. Asteriscus L. Craggie Hope, Cheatham Co., near railroad. 

 July. 



Var. Uvi'icaide DC. Barrens at Tullahoma. August. 



S; trifoliatiiiu L. Copses around Nashville. Frequent. July- 

 s', compositum Michx. Western declivities of Chilhowee Mts. 

 and in the hills on Chestua, East Tenn. July. 



S. terebiutliiuaceiiin Jacq., var. pinnatifidum Gray. Barrens 

 at Lavergne, Tenn. June- July. 



S. laciniatum L. Apparently rare in this State. East Tenn. 



Chrysogonum Virginianum L. Thickets in the mountains at 

 Ducktown. April. 



Partheniiiin integrifoliuiii L. Dry ground. Common. July. 



Inula Helenium L. Sweetwater East Tenn. July. 



Ambrosia bidentnta Michx. Fields and pastures. Browns- 

 ville. West Tenn. August. 



A. trifida L. Banks of streams and bottom lands. August. 

 Var. integrifolia Torr. & Gray. Is only a depauperate 

 form, always in very poor soil. 



* Silphium brachiatum Gattinger, n. sp. Stem 3-5 feet high, square or 

 subangular,with the brachiated, thin, roundish and nearly leafless flowering 

 branches smooth and glaucous. Leaves opposite, roughened on the upper 

 side, smooth on the lower, except the principal veins, which are slightly 

 hirsute, lower short petioled, deltoid or hastate-lanceolate, irregularly and 

 upwardly dentate, 6-10 inches long, green and glaucous, those on the 

 branches distant, small, sessile, entire; heads long peduncled. small, 

 bracts of the involucre ovate; achenia obovate-orbiculate. narrow winged, 

 slightly notched at the apex. Very distinct. The 1-3 flowered pedun- 

 cles 3-4 inches long and almost filiform. Involure little over one-half 

 inch high. Rays rather few, one-half inch long; akenes four lines long. 



Collected July 14th, 1S67, on the western slope of the Cumberland 

 mountains, a short distance south of the tunnel at Cowan, Tennessee. It 

 is quite numerous on the limestone base of the mountain, and probably 

 extends all along the Chattanooga road towards the Tennessee river. It 

 was, however, not since seen in any other part of the State. 



