5l6 TRANS. ST. LOUIS ACAD. SCIENCE. 



ARISTOLO CHI A CE^E . 



Asa RUM Canadense, L. Spec. 

 Low woods; frequent. 



SANTALACEuE. 



CoMANDRA ijmbellata, (L.) Nutt. Gen.— Thesium umbellatumy 



L. Spec. 



Prairie; frequent. 



E UPHORBIA CE^. 



Euphorbia petaloidea, Engel. in Bot. Mex. Bound, ii. 2, 1859. 



A single specimen found along the railroad near lower gate ; others have been 

 reported. 



E. gi.yptospervia, Engel. in Bot. Mex. Bound, ii. 2. 1859. 

 Sandy prairie and banks; common. 



In an open sandy or gravelly soil it is prostrate-spreading; in grassy places it is 

 erect or spreading. 



E. MACuiiATA, L. Spec. 



Prairies and banks ; common. 

 E. HYPERICIFOLIA, L. SpeC. 



Fields, pastures, and woods; common. 



Specimens sent to Dr. Millspaugh were pronounced to be this species. E. Pres- 

 lii, Guss. Fl. Sicul. i. iSj7, which much resembles it, may also occur. 



E. marginata, Pursh, Fl. 



Specimens arc occasionally found along the railroad. 

 E. COROLLATA, L. SpeC. 



Prairie and open woods ; abundant. 

 E. hetekophylIjA, L. Spec. 

 Rocky woods; scarce. 



Bluffs, Hoggatt's woods. Leaves of specimens so far collected are all linear 

 and entire. 



E. cyparissias, L. Spec. 



Escaped around gardens. 

 ACALYPIIA ViRGINICA, L. SpeC. 



Low places; abundant. 



UR TIC A CE^E. 



Ulmus fulva, Michx. Fl. 



Lowland woods ; frequent. 

 U. Americana, L. Spec. 



Lowland woods; abundant. 



Woodmen have informed me that formerly the " Hickory - Elm " (probably f'. 



racemosa, Thomas) was rather common, but, on account of its valuable timber, has 



been almost entirely cut away. 



Celtis oocidentalis, L. Spec. 2d ed. 



Woods; infrequent. 

 Cannabis sativa, L. Spec. 



Waste places; frequent. 

 HuMUiiUS LuPULUS, L. Spec. 



Banks of streams; frequent. 



