254 
SYNGENESIA JEQUALIS. 
SONCHUS. 
Involucrum imbrica- 
tum,ventricosum. Pap- 
pus sessilis,pilosus. Re- 
ceptaculum nudum. 
1. Oleraceus. Lin. 
S. pedunculis subto- 
mentosisumbellatis; in- 
volucris glabris; foliis 
oblongo - lanceolatis, 
amplexicaulibus, den- 
ticulatis, subsinuatis. 
Gen. Pl. 1233. 
Involucrum imbri- 
cate, ventricose. Pap- 
pus hairy, sessile. Re- 
ceptacle naked. 
Peduncles somewhat 
tomentose, flowers in 
umbels; involucrum 
glabrous; leaves ob- 
long-lanceolate, am- 
plexicaule, slightly 
toothed and sinuate. 
Sp. pi. 3. p. 1514. Pursh, 2. p. 501. Nutt. 2. p. 125. 
Root annual. Stem two to five feet high, terete, glabrous, fistulous, 
branching, very tender and succulent. Leaves alternate, amplexicaule, 
deeply sinuate and pinnatifid, segments acute and acutely toothed, the 
whole plant slightly glaucous. Flowers in axillary umbels. Peduncles one 
to two inches long, with tufts of a cotton-like tomentum, irregularly attach- 
ed to their surface. Scales of the involucrum subulate, v appressed. Corolla 
yellow. Seed oblong, striate, glabrous. Pappus sessile. 
Probably an exotic, now universally diffused in cultivated lands. 
Flowers March — July. 
2. Macrophyllus. Willd. 
S. pedunculis hirsu- 
tis, nudis; floribus pa- 
niculatis; foliis lyratis, 
basi cordatis, subtus 
hirtis. 
Peduncles hirsute, 
naked; flowers in pani- 
cles; leaves lyrate, cor- 
date at base, hirsute 
underneath. 
Sp. pl. 3. p. 1519. Pursh, 2. p. 501. Nutt. 2. p. 125. 
Root tuberous, perennial. Stem erect, four to seven feet high. Leaves 
large, lyrate, very hairy and hispid on the under surface. Corolla blue. 
Willd. 
This species I have not seen. 
