SYNGENESIA SUPF.RF1.UA. 
403 
quadrifidae. Pappus 0. 
Receptaculum setosum. 
1. Erecta. 
E. erecta, dichoto- 
ma, strigosa; foliis 
lanceolatis, basi atten- 
uatis, rariter serratis; 
pedunculis geminis, e- 
longatis; involucri foli 
olis ovatis, acuminatis. 
Pursh. 
of the disk 4-cleft. 
Pappus 0. Receptacle 
bristly. 
Erect, dichotomous, 
strigose; leaves lance- 
olate, attenuate at 
base, rarely serrate; 
peduncles by pairs, 
long; leaves of the in- 
volucrum ovate, acu- 
minate. 
Sp. pi. 3. p. 2217. Pursh, 2. p. 56l. Nutt. 2. p. 169- 
Plant annual. Leaves opposite, sessile, lanceolate, serrate, triplinerved, 
remote. Peduncles by pairs, long. Flowers small, white. Lin. 
Grows in dry gravelly soils, Virginia to Florida. Pursh. 
Flowers June — July. 
2. Proccmbens. Mich. 
E. procumbens as- 
surgensve; foliis longo 
lanceolatis, inferne an- 
gustatis, rariter serra- 
tis; ^ involucri foliolis 
acute lanceolatis; flos- 
culis quadrifidis. Mich. 
Procumbent or as- 
surgent; leaves long 
lanceolate, narrowed 
near the base, sparing- 
ly serrate; leaves of 
the involucrum acutely 
lanceolate; florets qua- 
drifid. 
Mich. 2. p. 129. Pursh, 2. p. 562. Nutt. 2. p. 169. 
Root annual? Stem procumbent, one to two and a half feet long, terete, 
sometimes turgid below the joints, branches numerous, opposite, radicant, 
and with the whole plant sprinkled with rigid appressed hairs. Leaves 
sessile, triplinerved, opposite. Peduncles about an inch long, generally in 
pairs, but never, I believe, opposite. Involucrum eight to ten leaved; 
leaves lanceolate, serrate, fringed, arranged in one series but unequal in size,. 
