366 STATE HOETIOnLTUEAL SOOIBTT. 



grows in Bollinger, Butler, Dunklin, Madison, Mississippi, New Madrid, Scott 

 and Stoddard counties; was reported from St. Louis by Murtfeldt, but this is 

 probably a mistake. 



76. Quercus PhellosX rubra Hollick. 



Biirtram' s-oak. A hybrid between some two species of oaks, and not yet defi- 

 nitely settled, but according to the new check-list, between the Willow-oak and 

 the Red-oak. 1 collected it in Dunklin county, a region in which the Red-oak has 

 been shown not to occur, and Broadhead found it in De Kalb, Shelby and Sullivan 

 counties, and Swallow found it in Cooper and Pettis counties— all localities 

 where the Willow-oak does not grow. It was considered a hybrid between the 

 Willow-oak and the Black-oak by Gray, and to this combination the Willow-oak Is 

 an objection, as stated above. Engelmann considered it a hjbrid between the 

 Willow-oak and the Scarlet-oak, and as the Scarlet-oak does not extend to the 

 «outheastern part of the State, my Dunklin county specimens could not represent 

 this hybrid. This is perhaps the most interesting oak hybrid we have, and has 

 been the subject of much discussion, and is the Qfiereus heterophylla Mlchx. f. 



11. Quercus platanoides (Lam.) Sudw. 



Swamp white-oak. A large, valuable tree, found mostly north of the Missouri 

 river. It resembles the Bur-oak in appearance of the trunk and leaves, but the 

 acorns are smaller and very long-peduncled ; has been found in Adair, Andrew, 

 Cass, Clark, Daviess, Gentry, Jackson, Madison, Saline, Scotland, Sullivan and 

 Worth counties. This is Quercus bicolor Willd. 



78. Quercus prinoides Willd. 



Prairie-oak— Dwarf Chinquapin-oak. A low bushy species of the prairie re- 

 gions of the State, often found loaded with fruit when only a foot or two high. 

 It is often a serious drawback to the farmer In the clearing of land, as it has a 

 habit of stooling out from the main stem for several yards around. Has been 

 found in Atchison, Holt, Howell, Jackson, Shannon, St. Louis and Stone counties. 



79. Quercus rubra L. 



Red-oak. A very large, valuable tree, distributed over the whole of the 

 State, except perhaps the lowlands of the southeastern part, where it is replaced 

 by the Texas red-oak. It reaches its greatest development and abundance along 

 the Missouri river in the central and western part of the State. It occurs in 

 Adair, Andrew, Atchison, Cedar, Clark, Clay, Clinton, Cole, Holt, Howard, 

 Howell, Jackson, McDonald, Newton, Oregon, Pike, Ray, Scotland, Shannon, 

 ■St. Francois, St. Louis, Wayne, Webster and Wright counties. 



SO. Quercus rubra runeinata A. D. G. 



A variety of the Red-oak, which has been found in Miller and St. Louis 

 counties. 



81. Quercus Texana Buckley. 



Texas Red-oak. A large and valuable oak of Texas, which extends up the 

 Mississippi river as far north as St. Louis, and is the prevailing Red-oak of the 

 lowlands of the southeastern part of the State, where it often has a diameter 

 of five to six feet, and a height of from 100 to 175 feet. So far as I know the range 

 of this species, it occurs in Butler, Dunklin, Mississippi, Ripley and St. Louis 

 counties. 



