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 Vernas oils, 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 
elliptic — 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 liaf. 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. 
