4g6 
SYNGENESIA. 
Intylus. 
phyllus, 3-dentatus. Cal. 5-phyllus. Sem. caly- 
culo 4-phyllo involuta. 
663. BALTIMORA. Recepi, paleaceum. Pappus nullus. 
Flosc. radii 5. Cal. cylindricus, polyphyllus. Sent. 
3-quetra. 
664. PARTHENIUM. Recepi, paleaceum, planum. Pap- 
pus nullus. Cal. 5 -phyllus. Sem. obovata. 
665. I VA. Recept. pilosum. Pappus nullus. Cor. radii 5. 
Antherce approximate, non coalite. Styli 2. longi. 
Cor. radii 5. femineis minimis. Cal. 3 -phyllus. 
666. AMBROSIA. Monoica. Masc. Recept. nudum. An- 
therce approximate, non coalite. Cal. 1 -phyllus, 
hemisphericus, multiflorus. Fern. Cal. l-phyllus, 
subinteger aut 5 -dentatus, 1 -florus. Cor. nulla. Sty- 
li 2. Nux e calyce indurato, 1-sperma, 
667 . XANTHI UM. Monoicum. Masc. Recept. paleace- 
um. Antherce approximate, non coalite. Cal. po- 
lyphyllus, imbricatus, hemisphericus, multiflorus. 
Fem. Cal. involucrum 2-phylium, 2-florum. Cor. 0. 
' Stigm. 2. Drupa sicca, muricata, 2 -fida. Nucleus 
2-locularis. 
V. SEGREGATA. 
668. ELEPHANTEPUS. Recept. nudum. Pappus seta- 
ceus. Calyculus 4-florus. Corollulce ligulate, her- 
maphrodite. 

L JE Q UAL IS. 
593 . CICHORIUM. Gen. pl. 1251. 
1. C. floribus axillaribus geminis subsessilibus, foliis runci- 
natis. JVilld. sp.pl. 3. p. 1624. 
Icon. Fl. dan. 907 . Engl. lot. 539. 
In fields and on road sides : Pensyivania, near Philadel- 
phia. Most certainly introduced from Europe. % . 
July, Aug. v, v. Flowers beautiful blue. 
