“SENGENESTA, NECESSARTA, 
SOR SULMBIM. Jack ai Gs Pky 
~ “=~ Calix sqtiarrose, scales broad nal folinbebus: 
: Receptacle. paleaceous, ~ Seed flat, pocgeates’ 
~ emarginate, bidentate. 
» Herbaceous, often tall; stem cylindric or panes Ssaeok 
= alternate, opposith: or rarely verticillate, entire or pinna- 
 “tifid; flowers. fastigiate, axillar and terminal, yellow.— 
. Hermaphrodite and sterile discal florets producing as in 
Alcina a simple subclavate style; dentures small ad pu- 
.  bescent. Seeds marginated. 
oe, Species. 1. 8. laciniatum. 2. compositutte 3. setebiee 
-* thinaceum. 4. perfaliatum.. 5. connatum. 6. Asteriscus, 
x 6. * seabrum. Leaves Opposite or alternate, oblong-lanceo. 
ee late, aubcrenate, acute, sessile and scabrous; calix subci- 
jiates 7. pumilum, B. tomentosum. - oS. tomentosum, PH 
ves alternate, cordate-ovate, crenate, obtuse, under. 
si ee canescen: ly villous; stem subtomentose; calix sp 
ing} seeds naked. 8. ixtegrifolium. 9. levigatum. Pu. 
10. trifoliatum. 11. ternatum. 12%atrepurpureum. _A va-— 
 wiety of the preceding. 13. elatum, Herb. Banks, mss. 
Not defined. 14. reticulatum, ibid. Destitute of character. . 
: =e A North American 8 Y yg 
7. POLYMNIA, Le Le a eos cir a 
Calia double; exterior 4 or Fieaved; teletor 
“2 0-leaveds leaflets concave. Receptacle = * 
ous. — Pappus none. - 
_. Herbaceous; stems tall; leaves opposite and siternsti 
» mostly lobed or subpinnatifid; flowers terminal, rays 
-. small, pale yellow. 
: Species. 1. P. canadensis. 2. Uvedalia. Stem sad 
= tall: Seeds large. Styles of the discal florets partly 
a 
Calix Pete ‘Rays very small. Receptacle : 
~ paleaceous, minute; extensor scales dilated, Seed 
obovate, minutely 3-awned. Pe : 
ceous; leaves alternatey simple or pinns 
So get age 5 external scales = 
} a the Faces il of. mix 
