( 209 ) 
is also some morphological ground, as given under the description 
of the species. The Fasciculatae range from Texas northward 
through the Prairie province and follow its eastern extension to 
Ontario. With the exception of 1. fasctculata and V. dllinoensts 
the ranges of the different species overlap but little or not at all. 
V. Lettermanni is found only beyond the limits of the Prairie 
province in the Ozark region. 
76. VERNONIA TENUIFOLIA Small, Bull. Torrey Club 25: 145. 
Type locality: ‘¢in dry soil, western Texas.” 
Distribution: western and southwestern Texas and adjacent New 
Mexico, mainly south of, but overlapping, the range of V. mar- 
ginata. 
v7, VERNONIA MARGINATA (Torr.) Raf. Atl. Jour. 1: 146, 
3 
Vernonia altissima marginata Torr. Ann. Lyc. Nat. Hist. 2: 
210. 1827, 
Vernonia Jamesti Torr. & Gray, Fl. N. Am. 2: 58. 1841. 
Type locality: ‘‘On the Arkansa?” 
Distribution: extreme southwestern Kansas, western Oklahoma, 
northwestern Texas and eastern New Mexico. 
478. Vernonia LETTERMANNI Engelm. Proc. Am. Acad. 16: 
re) 
Type locality: ‘‘ Arkansas, on Cooper’s Creek, De Jj. M. Bige- 
low, and on sand-bars of the Washita, Lettermann.’ 
Distribution: on sand-bars and gravel-beds, in the lower Ozark 
region of central Arkansas and Indian Territory. 
79. VERNONIA corymBosaA Schw. Long’s Sec. Exp. 2: 394. 
Vernonia Schwetnitziid Steud. Nomencl. Bot. ed. 2. 2: 755. 
1841. 
Stem erect, glabrous, usually red, 4-8 dm. high; leaves firm, pale- 
green, erect or ascending, sessile, ovate-lanceolate, 4~7 cm. long, 
1-2.5 cm. broad, acute, regularly serrate with low teeth, somewhat 
scabrous above, especially near the margin, glabrous and deepl 
high | at maturity, 21- ae weed: involucre broadly campanulate or 
