406 
SYNGENESIA. 
Jniyhus^ 
I 
phyllus, 3*’dentatus. Cal. 5-phyllus. Sem. caly- 
culo 4-phyllo involuta. 
663. BALTIMORA. paleaceum. nullus. 
Flosc. radii 5. Cal. cylindricus, polyphyllus. Sem. 
3>quetra. 
664. PARTHENIUM. Recept. paleaceum, planum. Pap- 
pus nullus. Cal. 5-phyllus. Sevi. obovata. 
665. IVA. Pecep/. pilosum. nullus. Cor. radii 5. 
Antherce approximatae, non coalitae. Styli 2. longi. 
Cor. radii 5. femineis minimis. Cal. 3- phyllus. 
666. AMBROSIA. Monoica. Masc. Recept. nudum, C 
therce approximatae, non coalitae. Cal. 1 -phyllus, ? 
hemisphaericus, multiflorus. Fern. Cal. 1-phyllus, 5 | 
subinteger aut 5 -dentatus, I -florus. Cor. nulla. Sty- • 
li 2 . e calyce indurate, 1-sperma. I t 
667 . ^J^ANTHIUM. Monoicum. Masc. Recept. paleace- ^ 
um. y^wMer^?? approximatae, non coalitae, Cal.po- i 
lyphyllus, imbricatus, hemisphaericus, multiflorus. 
Pm. Ca/. involucrura 2-phyllum, 2-florum. Cor. 0. I.; 
Stigm. 2. Drupa sicca, muricata, 2-fida. Nucleus C; 
2-locularis. 
V. SEGREGATA. 
668. ELEPHANTEPUS. Recept. nudum. Pappus seta- || 
ceus. Caly cuius 4-florus. Corollulce ligulatae, her- ‘ ' 
niaphroditae. J 
I. ^qUALIS. 
593. CICHORIUM. Gen. pi. 1231. 
1. C. floribus axillaribus geminis subsessilibus, foliis runci- 
natis, JFilld. sp.pl. 3. p. id24. - -h 
Icon. Fl.dan.Q07. Engl. lot. 53Q. 
In fields and on road sides : Pensylvania, near Philadel- 
phia. Most certainly introduced from Europe. 1/* - 
July, Aug. v.v. Flowers beautiful blue. 
