222 UNIVERSITY OF MISSOURI STUDIES [364 



but no character, save the size of the heads, which are S-io 

 mm. high, is constant, since some plants have the foliage and 

 pubescence of V. Dnimmondii Shuttlw., and others that of 

 V. interior Sma.\\. 



913. V. Reedii Daniels. Nov. spec. 



Plants tall, mostly over 2 metres in height, stem and pe- 

 duncles densely covered with rufous or russet pubescence, 

 which in some plants is almost villous; leaves oblong-lan- 

 ceolate acuminate at the apex, the margins sharply serrate, 

 surfaces harsh above, densely tomentose below, the midribs 

 often rufous-hirsute, cymes pyramidal, the branches and pe- 

 duncles stout and thickened upwards, some of the central 

 heads of each fork nearly, or quite, sessile; heads very large, 

 12-15 n^ni- broad, bracts large, broadly ovate, obtusish but 

 bluntly mucronate, loose and slightly spreading at maturity, 

 but not reflexed; pappus unusually short, deep buff with a 

 slight purplish tinge at base; achenes hispidulously barbed 

 on the ribs. 



Wild fields east of Columbia, where it is a striking plant, 

 both on account of its great height and its reddish pubes- 

 cence, which is unlike that of all other vernonias of the 

 region; first gathered in company with H. S. Reed, after 

 whom the species is named. 



914. V. altissima Nutt. [V.^^ig-afitea (Walt.) Button: V. 

 maxima Small]. Tall ironweed. 



Common in fields and along streams. It merges into V. 

 interior Small in dry soil. 



Pennsylvania and Michigan to Missouri; Alabama to 

 Louisiana. 



915. V. chrysopappa Daniels. Nov. spec. 



Plants low, mostly less than a metre in height; stem 

 puberulent, especially above, with short, close, brownish 

 tomentum; leaves linear to lance-linear, long-acuminate 

 both at base and apex, the lower sharply serrate, the upper 

 entire with revolute margins; the upper surfaces minutely 

 scabrous, the under minutely canescent; cymes pyramidal, 

 l-zYi dm. wide, the primary branches forking dichotomous- 



