278 SYNGYNESIA.— JEQ.UALIS. 



late ; radical ones closely sessile ; raceme oblong ; 

 flowers in nodding fascicles ; calyx very hairy. 

 8 — 9-parted, 9 — 12-flowered. 

 HAB. Swamps. Aug.— Sept. U. Stem 2 ft. high ; 

 fl. purp. 



465. LACTUCA. Lettuce. Composite. 



1. L. elongata: leaves smooth ; the lower ones runci* 

 nate, amplexicaul ; upper ones lanceolate, sessile ; 

 flowers paniculate. 

 HAB. Wet woods. U. £. July— Aug. Stem 4— 6 

 ft. high ; pan. large, loose ; fl. yell. 

 ?. L. hirsuta : lower part of the stem and leaves hairy ; 

 radical leaves lyrate ; segments truncate, subden- 

 tate; upper ones partly runcinate-pinnatifid ; flow- 

 ers in racemes. 

 HAB. Pennsylvania. Aug. U . Fl. yell, and purp. 

 3. L. intcgrifolia : leaves sagittate, entire, unarmed., 

 amplexicaul ; flowers panicletl. 

 HAB. Roadsides. July. $. Stem 3—4 ft. high, 

 smooth ; fl. yell. 

 1. L. sanguinea: leaves amplexicaul, runcinate, glau- 

 cous beneath; with the midrib filamentous ; flowers 

 panicled. 

 HAB. Woods. July— Aug. $? Stem 2—3 fl 

 high, purp. ; cal. purp. ; fl. crim. 



466. SONCHUS. Sow-thistle. Composite. 



1. S. oleraceus : peduncles tomentose ; calyx smooth 

 leaves runcinate, dentate. 

 HAB. Waste places. July— Sept. ©. Stem 

 2 — 3 ft. high, hollow ; fl. yell. §. 

 \ S. arvensis: peduncles and calyx hi?pid, sub umbel- 

 late ; leaves runcinate, denticulate, cordate at the 

 base ; root creeping. 

 HAB. Banks of rivers. U. Stem % ft. high: 

 glandular-hairy ; fl. large, yell. §. 

 ). S. leucophccus : peduncles squ;»mo>e; flowers race- 

 mose ; leaves runcinate, acuminate ; stem virgate 

 and panicled. 

 UAB. Swamps. Sept. U-6*- Stem 2 ft. high : 

 fl. yellowish. 



