﻿of the Southern United States 145 



Vernonia pulchella. 



Perennial, hirsute. Stems solitary or clustered, 3-10 dm. tall, 

 branched above : leaves firm ; blades oblong-oblanceolate or 

 oblong to nearly linear-lanceolate, 2-10 cm. long, acute, serrate, 

 often sharply so, somewhat crisped, revolute, sessile but not at all 

 cordate : corymbs 1— 1. 5 dm. broad : peduncles 1-3 cm. long, slightly 

 enlarged upward or some heads nearly sessile : involucres campanu- 

 late, 6-7 high, often purplish : bracts lanceolate to linear-oblong, 

 prolonged into linear-subulate spreading or recurved tips : pappus 

 pale straw-colored : achenes 3 mm. long, with upwardly barbed 

 ribs. 



On sand hills, Georgia. 



A 



Vernonia scabcrrima Nutt. It 



more 



robust in habit and has larger serrate leaves 

 which are destitute of the peculiar base characteristic of Vernonia 

 scaberrima. The tips of the involucral bracts are more slender 

 and less rigid than those of its relative. 



The type specimens were collected by the writer on sand hills 



Altamaha 



J 



v Vernonia tenuifolia. 







Perennial, with thinly pubescent foliage. Stems erect, 0.5-1 

 m. tall, branching above : leaves numerous ; blades linear or nearly 

 so, 0.5-1.5 dm. long, acute, serrate, minutely punctate, sessile : 

 corymbs 5-10 cm. broad, with rather few heads: peduncles 

 slightly enlarged upward: involucres campanulate, 8-10 mm. 

 high, purple : bracts ovate to oblong, erect, acute or mucronate : 

 pappus straw-colored or tinged with purple : achenes about 4 mm. 

 long, with smooth and glabrous ribs. 



In dry soil, western Texas. 



Alth_ 6 



it is abundantly distinct. Its leaves are manifestly serrate while 

 the broader and shorter involucres with their merely acute or 

 mucronate bracts are very different from the narrower involucres 

 and the acuminate bracts which are characteristic of lernoma 



marginata. 



> SlLPHIDM KUMICIFOIJl-M. 



Perennial, glabrous or nearly so, bright-green. Stem erect, 

 4-8 dm. tall, simple below, corymbosely branched above, grooved, 

 reddish purple, stout : leaves mainly basal ; blades leathery, 



