HITCHCOCK — PLANTS OF AMES, IOWA. 5OI 



A. AZUREUS, Lindl. in Hook. Comp. Bot. Mag. i. 1835. 



Prairies and thickets; frequent. 

 A. CORDIFOLIUS, L. Spec. 



Woods; common. 

 A, li.EVis, L, Spec. 



Rocky woods, especially bluft's ; not uncommon. 

 A. AMETHYSTiNUS, Nutt. Trans. Amer. Phil. Soc. vii. 1841. 



Moist places: scarce. 

 A. MULTiFLORUS, Alt. Hort. Kew. 



Prairie; common. 

 A. LATERiFi^ORUS, (L.)^Britton, Trans. X. Y. Acad. Sci. ix. 1889. 

 — Solidago lateriflora. L,^ Spec. — A. dij/~usus. Ait. Hort. Kew. 



Low woods ; abundant. 

 A. PANicuLATUS, Lam. Diet. i. 



Low ground : common. 

 A. PRENANTHOiDES, Muhl. in Willd. Spec. ill. 



Low ground ; infrequent. 

 A. PUXiCEUS, L., var. lucidulus, (Weudr.) Gray, Syn. Fl. i. 2. — 

 A. lucidulus. ^Vendr. Ind. Sem. Marb. 



Moist places; not uncommon. 



A. UMBELLATUS, Mill. Diet. 



Low ground ; not uncommon. 

 Var. PUBENS, Gray, Syn. Fl. i. 2. 

 Low ground ; infrequent. 



Erigerox Canadensis, L. Spec. 

 Neglected ground ; common. 



Commonly 4 or 5 feet high, but depauperate specimens sometimes only a few 

 inches. 



E. DivARTCATUS, Michx. Fl. 



Prairie or open woods; not uncommon. 

 E. ANNUUS, (L.) Pers. Syn, ii. — A^^trr annuus. L. Spec. 



Prairie and neglected fields; abundant. 



The typical form is pubescent with spreading hairs; leaves broad, thinnish and 

 toothed. Passes into the next. 



E. RAMOSUS, (Walt.) B. S. p. Cat. — Doronicum ramosum, Walt. 

 Fl. — E. strig-osus. Muhl. in Willd. Spec. iii. 

 Dry ground ; common. 



Typical form pubescent with appressed hairs : leaves narrowlv spatulate, thick- 

 ish, usually entire. Apparently crosses freely with £. annuus. 



E. Philadelphicus, L. Spec. 



Upland woods ; abundant. 

 Antennaria plantaginifoi-ia, (L.) Hook. Fl. i.—Onaphalium 



flattfaffinifolium. L. Spec. 

 Upland woods; common. 



