16 NORTH AMERICAN 



ligule or lamina elongate venose, end bifid, sides 

 unidentate. Disk with many florets, male and 

 perfect mixt. Ovary obovate hardly bidentate, 

 florets tubulose Sdentate, stamens free at the 

 end, style hardly bifid. In male florets ovary 

 entire, anthers often quite free. Seeds obo- 

 vate black hardly bidentate. Perennial^ habit 

 of Vernasolis, but root not creeping, 



202. Odoglossa heterophylla Raf. stem 

 virgate, naked above, pauciflore sulcate smooth, 

 branches very long uniflore, naked polygonal ; 

 leaves rugose beneath, radical petiolate cune- 

 ate obtuse entire, inferior petiolate pinnatifid, 

 lobes oblong obtuse 3 to 7, the last larger, me- 

 dial leaves sessile oblong entire. External pe- 

 rianthe ovatoblong obtuse nervose, the internal 

 eUiptic — In Alabama, Georgia and West Ten- 

 nessee, rare, stem pedal or more, root fibrose, 

 flowers vernal ? rays yellow nearly one inch 

 long, perianthe yellowish. I have not yet found 

 any synonym to this curious plant. 



203. LAXANON Raf. Name of Dioskori- 

 des for a Lapsana, to which Genus it is akin, 

 in family of Glossanthia or Cichoracea, but 

 differs by naked seeds and simple perianthe. 



Perianthe simple 5 to 7 parted, without cal- 

 icule. Ligules 10 to 15, seeds ovatoblong stri- 

 ate naked, pappus none, phoranthe naked. 

 Habit of Krigia. One type. 



204. Laxanon parviflorum Raf. smooth, 

 stem ramose terete, branches incurved, leaves 

 graminiform linear lanceolate, entire obtuse,up- 

 per ones nearly opposite ; flowers terminal, pe- 

 dicels elongate unequal filiform pubescent, 3 to 

 5 subumbellate, perianthe smooth, sepals ovate 

 acuminate — Sent me from Alabama, pedal dif- 

 fuse, flowers yellow very small. This is evi- 

 dently a very distinct plant. 



