^ S'SNGENESIAI 
phyllus, 3-dentatus. Cal. 5-phyllus. Sem. caly- 
culo 4-phyllo involuta. 
603. BALTIMORA. paleaceum. Pappus v^mWus. 
Flosc. radii 5 . Ca/. cylindricus, polyphyllus. <Sm. 
3~quetra. 
604. PARTHENIUM. Recept. paleaceum, planum. Pap- 
pus nulkis. Cal. 5-phyllus. Sem. obovata. 
605. IVA. pilosum. Pappw5 nullus. Cor. radii 5. 
Antheroe approximatae, non coalite. Styli 2. longi. 
Cor. radii 5. femineis minimis. Ca/. 3- phyllus. 
600. AMBROSIA. Monoica. Masc. Recept. nudum. An- 
ther ce approximatae, non coalitae. Cal. I -phyllus, 
hemisphaericus, multiflorus. Fern. Cal. 1-phyllus, 
subinteger aut 5 -dentatus, I -florus. 6'or. nulla. Sty- 
li 2. Nux e calyce indurato, 1-sperma. 
667. XANTHIUM. Monoicum. Masc. Recept. paleace- 
um. AnthercB approximatae, non coalitae. Cal. po- 
lypbyllus, imbricatus, hemisph^ricus, multiflorus. 
Fern. Cal. involucrum 2-phyllum, 2-florum. Cor. 0. 
Stigm. 2. Drupa sicca, muricata, 2-fida. Nucleus 
2-locularis. 
V. SEGREGATA. 
608. ELEPHANTEPUS. Recept. n\ad\im. Pappus %Q{a- 
^ ceus. Calyculus 4-florus. Coroilulce ligulatae, her» 
niaphroditae. 
I. MQ_UALIS. 
593. CICHORIUM. Gen. pi. 1251. 
1. C. floribus axillaribus geminis subsessilibus, foliis runci- 
natis. Willd. sp.pl. 3. p. 1024. 
Icon. FI. dan. 907. Engl. lot. 53Q. 
In fields and on road sides : Pensylvania, near Philadel- 
phia. Most certainly introduced from Europe. 1/ « 
July, xAug. V, V. Flowers beautiful blue. 
