﻿of the Southeastern United States 479 



rate or nearly entire, sessile by a truncate base : heads showy : in- 

 volucres somewhat foliaceous : bracts linear-lanceolate or nearly 

 linear, about i cm. long : rays deep yellow, linear, 1-2 cm. long, 

 usually 10-12 : disk black, depressed: disk-corollas about 3 mm. 

 long : disk-bracts linear-oblong, acute. 



In meadows and dry soils, northwestern Georgia. Summer. 



While working under the State Geologist of Georgia in the 

 northwestern and little explored part of that State, I became ac- 

 quainted with an undescribed species of Rudbcckia. The plant 

 was quite common in the limestone districts. Rudbcckia truncata 

 differs from Rudbcckia fulgida by more elongated basal leaves and 

 the prominently 3 -nerved leaf-blades throughout. The blades of 

 the stem leaves, although rather narrow, have a conspicuous trun- 

 cate base. The heads are larger than those of its relative and the 

 bracts of the involucres more coarsely hirsute. 



There is a specimen almost identical with mine in the her- 

 barium of Columbia University [Chapman Herbarium], collected 

 many years ago at Rome, Georgia. 



'Helianthus verticillatus. 



Perennial, deep green. Stems erect, 9-18 dm. tall, branching 

 above, smooth and glabrous almost to the heads : leaves below 

 the inflorescence in whorls of 3's ; blades firm, broadly linear or 

 Hnear-lanceolate, 8-12 cm. long, somewhat acuminate, entire, re vo- 

 lute, shagreen-like above, sparsely pubescent beneath, nearly sessile 

 or narrowed into short petioles : peduncles strigillose-hispidulous 

 under the heads : heads showy : involucres campanulate-turbinate, 

 barely 1 cm. high : bracts narrowly linear-lanceolate, ciliolate, 

 otherwise glabrous, somewhat spreading : rays deep yellow, ob- 

 long, about 2 cm. long: disks about 1.5 cm. broad: disk-corollas 

 5 mm. long, triangular-ovate : disk-bracts slightly keeled, pubes- 

 cent and ciliate at the apex, prolonged into 1 or 2 sharp teeth : 

 achenes about 5 mm. long. 



In wet sandy soil, western Tennessee. Summer. 



The prolific flora of Tennessee makes it necessary to add 

 another member to the genus Helianthus. The specimens in ques- 

 tion were collected by Prof. L. M. Bain at Henderson, Tennessee, 

 in August, 1892, no. 288. Helianthus verticillatus is related to 

 Hdianthus o-io-autcus, but is easily distinguished by the smooth and 

 glabrous stem, the narrower entire smoother leaf-blades and the 

 narrowly linear-lanceolate bracts of the involucres. 



