282 
*Quercus x introgressa P. Thompson ([Q. muehlenbergii x Q. 
prinoides] x Q. bicolor) (Thompson, 1977) (note that 
no binomial is available for Q. muehlenbergii x Q. 
prinoides, which was also reported for Missouri by 
Thompson 
Quercus x jackiana C. Schneider (Q. alba x Q. ei p. 535 
Quercus x leana Nutt. (Q. imbricaria x Q. velutina), 2 
Quercus x ludoviciana Sarg. (Q. falcata x Q. sites D 542 
Quercus x moultonensis Ashe (Q. phellos x Q. shumardii 
. 542 
Quercus x — BJ; agi & Steyerm. (Q. palustris x Q. 
humardii), p. 
Quercus x ssh ie (A. ag Engelm. (Q. imbricaria x Q. 
rubra), p. 542 
Quercus x schuettei Tre]. (Q. bicolor x Q. macrocarpa), p. 538 
Quercus x stelloides E. J. Palmer (Q. prinoides x Q. stellata), 
39 
Quercus x sterrettii Trel. (Q. lyrata x Q. stellata), p. 536 
Quercus x cei (A. DC.) Engelm. (Q. imbricaria x Q. 
rilandica), p. 542 
Quercus x — di ory & Steyerm. (Q. palustris x Q. 
velutina), p. 5 
GENTIANACEAE 
Gentiana x pallidocyanea J. Pringle (G. andrewsii x G. flavida), 
p. 1190 
JUGLANDACEAE 
Carya x lecontei Little, bitternut hickory (C. aquatica x C. 
I , 516 
); P- 
Carya x nussbaumeri Sarg. (C. illinoensis x C. laciniosa), p. 518 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
