9YN0ENESTA FRUSTRANEA. 431 
Grows in fields and woods, Canada to Carolina, Pursh. I have not seen 
it in the low country of Carolina. 
Flowers July — October. 
3. PlLOSA. 
Flowers discoid; ex- 
terior involucrum as 
long as the interior; 
lower leaves pinnate, 
the upper ternate, leaf- 
lets oblong, the termi- 
nal one lanceolate, 
twice as long as the 
rest. 
Sp. pi. 3. p. 1720. Pursh, 2. p. 566. Nutt. 2. p. 1 79. 
Root annual. Stem two to three feet high, branching, hairy. Leaves 
ovate-lanceolate, oblong, dentate, somewhat hairy, the lower sometimes 
doubly pinnate. Flowers opposite and terminal on long peduncles. Ex- 
terior involucrum leafy, the interior resembling scales. Florets of the ray 
0; of the disk rather numerous, yellowish. Seeds oblong, narrow, termin- 
ating in two or three awns retrorsely aculeate. 
The specimens I have seen under this name do not accord exactly with 
the figure of Dillenius. Hort. Elth. t. 53. f. 51. 
Grows a common weed in old fields. Pursh. 
Flowers July — October. 
floribus discoide- 
is; involucro exteriore 
longitudine interioris; 
foliis inferioribus pin- 
natis, superioribus ter- 
natis, foliolis oblongis, 
terminali lanceolato, 
reliquis duplo longiore. 
4. Frondosa. 
B. floribus discoide- 
is; involucro exteriore 
flore multo longiore, 
foliolis basi ciliatis; 
foliis inferioribus pin- 
natis, superioribus ter- 
natis, lanceolatis, ser- 
ratis. 
Flowers discoid; ex- 
terior involucrum much 
longer than the flower, 
leaflets fringed at base; 
lower leaves pinnate, 
the upper ternate, lan- 
ceolate, serrate. 
i 
