PLANTS OF IOWA 157 



2013. Q. palustris, Du Boi. Pin Oak. 

 Common in moist ground. 



2014. Q. schneckii, Britton. Schneck's Oak. 

 Not common. 



2015. Q. coccinea, Wang. Scarlet Oak. 

 Frequent. 



2016. Q. ellipsoidalis, E. J. Hill. Hill's Oak. 

 Infrequent. 



2017. Q. velutina, Lam. Yellow Oak. 

 Frequent. 



2018. Q. marylandica, Muench. Black Jack. 

 On hills, south. 



2019. Q. nigra, L. Water Oak. 

 Along streams. 



2020. Q. imbricaria, Michx. Shingle Oak. 

 Infrequent. 



2021. Q. alba, L. White Oak. 

 Common. 



2022. Q. minor, (Marsh) Sarg. Post Oak. 

 Infrequent. 



2023. Q. macrocarpa, Michx. Bur Oak. 

 Common. 



2024. Q. platanoides, (Lam.) Sudw. Swamp White Oak. 

 Frequent. 



2025. Q. acuminata, (Michx.) Hauda. Chestnut Oak. 

 Infrequent. 



2026. Q. prinoides, Willd. Scrub Chestnut Oak. 

 Not common. 



ULMACE.S:. ELM FAMILY. 



ULMUS, L. 



2027. U. americana, L. White Elm. 

 Common in alluvial woods. 



2028. U. racemosa, Thomas. Cork Elm. 

 Rather common on rocky slopes. 



