(213 ) 
the narrow, long-acuminate, sharply serrate leaves of V. fasctcu- 
tata, and may be a hybrid between the two species. 
VERNONIA INTERIOR Batpwini (Torr.) Mack. & Bush, Man. Fl. 
ackson County 190. 1902 
Vernonia Baldwint Torr. Ann. Lyc. Nat. Hist. 2: 211. 1824. 
Vernonia sphaerotdea Nutt. Trans. Am. Phil. Soc. 7: 283. 
1840 
Resembling the type, but with usually shorter involucre, more 
pubescent scales which are recurved at the tip, and frequently with 
shorter, proportionately broader leaves. 
In dry soil, Missouri and southwestern Illinois, intergrading 
with the species. 
83. VERNONIA MISSURICA Raf. Herb. Raf. 28. 1833 
Vernonia fasciculata 8 T. & G. Fl. N. Am. 2: 58. 1841. 
Vernonia altissima grandiflora A. Gray, Syn. Fl. 17: go. 1884. 
Vernonia Drummondit Werner, Jour. Cin. Soc. Nat. Hist. 16: 
171. 1894 
Vernonia interior ee Mack. & Bush, Man. Fl. Jackson 
County 1g0. 1 
Erect, 10-15 dm. eh branching above; stem stout, angled, 
gray-tomentose; leaves numerous, thick, spreading, sessile or short- 
petioled, lanceolate or ovate- lanceolate, 10-15 cm. long, 2—5 cm. 
wide, long-acuminate, sharply and coarsely serrate, acute or rounded 
at the ae eee above, tomentose beneath; inflorescence flat- 
tened, ‘dm. cross; peduncles densely pda: heads sessile 
or ee petunele 34-55- a aes e broadly campanu- 
noid-ciliate; achenes 4.5 mm. long, sharply ribbed, puberulent in 
the furrows; pappus 6-8 mm. long, tawny or rarely with a purple 
tinge, the outer series short but distinct. 
Type locality: ‘‘In Missouri, barrens.” 
Distribution: Illinois, Missouri, Kansas, Arkansas, Indian Ter- 
ritory, and Texas, on prairies, barrens, and dry ground. 
The species varies greatly in the shape of the involucral scales as 
well as in the color of the pappus, and extreme forms can scarcely be 
distinguished from V. 2dznoensis, except by the collection locality. 
. meissurica is typically an Ozarkian plant, and Tracy’s 737¢ from 
