CARDUACEAE 1399 
III. CAMPHORATAE 
Bracts of the involucre thin, sparingly pubescent. 6. P. petiolata. 
Braets of the pu din. thick, densely pubescen 
e. cres 4-5 mm. high; inner bracts Sbrubdy Cd UNE y ME con EM ALTE 
Involuecres 6-8 im . high; inner bracts long-acuminate. 8. P. camphorata 
IV. SUBDECURRENTES 
Erect herb with corymbosely branched stem, the branches 
winged as well as the stem : leaf-blades shallowly toothed. 9. P. Quitoc. 
1. P. odorata Cass. Plant mostly 1 m. tall or less: leaf-blades elliptic or 
nearly so, 8-15 cm. long: inner bracts of the involueres 3.5—4 mm. long, obtuse. 
Hammock 
pom ——— L3 
€ Ia 
—— 
[Ir 
= 
Soon - 
H mos : az 
"tu ene 
tA tyes Pa 
moc 
and the Ke 
Meg., C. A., 8. 4A.) —Spr.-sum 
P. foetida (L.) DC. Plant 3-10 dm 
MN 
sty o d 
or ovate, 3 š 
veined, denticulate or Ru S T om- 
inently gland-tipped teeth: inner b of 
the involucre mostly 4-5 mm. long. [P. 
bifrons DC.]—Low grounds and shallow 
ponds, Coastal Plain and adj. provinces, Fla. 
to Tex. Mo., and N. J—(W. I. Mez.)— 
Spr.-sum. or all year 
3. P. tenuifolia Small. Plant 4-11 dm. tall, Au — thinly iubens ent: 
leaf-blades elliptic to elliptic-lanceolate, 4—12 ong, thin, finely veined, 
sharply and coarsely serrate with sli ightly PURIS ed inner braets of the 
La.—Sum.-fall. 
involuere 5-6 mm. long.—Pinelands, Coastal Plain, Fla. to 
4. P. longifolia Nash. Plant 6-10 dm. tall: leaf- oe elliptic, 5-16 cm. 
long: os bracts of the involucre 7-19 mm. long: staminate corollas 6.5—7.5 
—Swamps, Fla.—Sum. 
5. P. imbricata (Kearney) pem Plant 9-25 dm. tall: leaf-blades ov dd 
elliptie to iur pedi ovate, 3-6 cm. long: inner bracts of the involucre 6-7 m 
long: staminate corollas 5-6 mm. ong ——Swamps and pond-borders, Coastal 
Plain, Fla. 35 Ga. and S. C.—Sum.-fal 
E P. petiolata Cass. Plant t 5-12 dm. tall: leaf- a mainly elliptic, 8-25 
. long: outer bracts of the involucre ovate; intermediate bracts acuminate. 
[P. oe DC. E om Duc swamps and dd various provinces, Fla. to 
, Kans. and —Sum.—fall. 
du UP. eerie Su DC. Plant 3-14 dm. tall: leaf-blades Mic lanie eos 
n 7 elliptic, 4-10 c long: outer a c the involucre ovate, acute; inter 
e bracts dup. pointed.—Ham s and moist sandy thickets, "Coastal 
Plain, Fla. to Tex. and Ga.—(W. I., Mer., E A., S. A.)—Sum.-fall. 
8. P. camphorata (L.) DC. Plant 3-15 dm. tall: leaf-blades elliptic or 
lanceolate, 3—15 cm. long: outer bracts of the involucre elliptic, acute: inter- 
mediate bracts e —Salt marshes, Coastal Plain and adj. provinces, Pla: 
to Tex. and Mass.—(Mex.) 
P. Quitoc DC. Plant 7-20 dm. tall: leaf- uie d elliptic, it 
late or linear-lanceolate, E 16 em. long: outer braets of the involuere obtu 
Marsh places, W Fla.—Nat. of trop. Am.—Spr.—fa "n 
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