or NORTH AMERICA 77 



931. Vernonia BREviFOLfA Raf. stem groov- 

 ed pubescent below smootli. above, leaves short 

 oblong, margin siibentire revolute, very sca- 

 brous above, pubescent and glaucous beneath ; 

 flowers subumbellate few, segments of perian- 

 the lanceolate acuminate squarrose — in Alaba- 

 ma near to F. bnldulni, which has however 

 leaves ovate serrate, here they are oblong, 

 broader below, or subcuneate, narrow above 

 nearly lanceolate, only uncial ; flower in a Irre- 

 gular umbel of about 10 flowers, naked, steni 

 bipedal or less. 



932. Vernonia crinita Raf. smooth, stem 

 grooved, leaves narrow lanceolate elongate with 

 remote obtuse teeth ; corymb foliose, perianlhe 

 crinite by long lax subulate filiform segments — 

 in Louisiana and Arkanzas near streams a tall 

 sp. leaves 5 to inches long, only half inch 

 broad in the middle, acuminate at both ends 

 and sometimes falcate : flowers large perianthe 

 hemispherical multifl. segments nearly all equal 

 slender and forming a fringed cup as long as 

 florets. 



933. M AKSHALLiA spiralis Raf, smooth sub- 

 scapose, leaves radical linear lajiceolate obtuse 

 uninerve, scape elongate spiraly *f rooted^ pu- 

 bescent above, perianthe se;[^ments linear obtuse 

 smooth — in Arkanzas and West Louisiana found 

 by Binder, near to M, lanceoUita., but quite dis- 

 tinct, leaves narrower 3 inches long, scape twist- 

 ed as some Xurides (not so in M< lanceolata) pe- 

 dal, flower large incarnate. 



934. Marshallta tenuifotia Raf. stem sim- 

 ple virgate grooved, naked and pubescent above, 

 leaves scattered all narrow linear elongate acute 

 perianthe segments linear acute pubescent — 

 found by Baldwin on the sea shores of Florida 



