74 IOWA ACADEMY OF SCIENCES. 



(229) Eicoria alba, L. Britt Navasota, Grimes county. Clay uplands; 

 common. 



MYRICACE/K. 



(230) Myrica cerifera, L. Hempstead, Waller county. Sandy barrens. 



CUPULIFER^. 



(231) Betula nigra, L. Northern Texas. 



(232) Quercus obtusiloba, Michx. (Post Oak.) College Station, Brazos 

 county (P.); Independence, Washington county; Calvert, Robertson county; 

 Sherman, Travis, Burnet, Hays, Grayson, Dallas counties. A common tree 

 through Central Texas. A variable tree, usually growing on uplands. 

 Soil may be sandy or a loam. Hard pan close to the surface, known as 

 post oak soils. 



(233) Q. lyrata,Wa\t.{^) Hays county; Collin county. 



(234) Q. prunoides,Wi\\d. Sherman. (P.) In bottom along streams, in 

 rich soil, a good tree. 



(235) Q. durandii, Buckley. Melissa, Collin county. Limestone bluffs. (P.) 



(236) Q. virens, Ait. (Live Oak.) Independence, Washington county. 

 Forming groves in black soil: a large tree. 



(237) Q. rubra, L., var. texana, Buckley. Calvert, Robertson county. In 

 low grounds. 



(238) Q. nigra, L. (Black Jack, Jack Oak.) Denison, Grayson county. 

 Red sandy soils. Common. Washington county, Brazos county, Collin 

 county, Dallas county. 



(239) Q.falcata, Michx. (Spanish Oak, Red Oak.) Yarborough, Gray- 

 son county; Grimes county (F.) A large tree. Common on sandy soil. 



(240) Q. aquatica, Walter. (Water Oak, Punk Oak.) College Station, 

 Bryan, Brazos county (P.); Washington county. In low grounds along 

 streams. Not uncommon. Young leaves scurfy and sinuate pinnatifid. 



(241.) Q. imbricaria, Michx. Denison, Grayson county. 

 (242.) Q.phellos,L. (Willow Oak.) Bryan, Brazos county. Common. 

 Sandy, loamy soil; uplands. 

 (243.) Q. ]jalus(,ris, Du Rois. Calvert, Robertson county. 



(244) Q. tmoryi,ToYYej (^). Burnet, Burnet county. In sandy, rocky 

 woods. Low shrub. * 



SALICACE^. 



(245) Populus monilitera, Ait. Denison, Grayson county; Calvert, Rob- 

 ertson county. In low grounds along streams. 



CONIFERS. 



(246) Pinus tcBda, h. ( Loblolly or Old-tield Pine.) Yarborough, Grimes 

 county. A few large trees, more common in Montgomery county. 



(247) Juniperus virginiana, L. ( Red Cedar.) Dallas, Dallas county; 

 Austin, Travis county. Usually on sandy or light soils. Trees, large near 

 Dallas. The species is abundant everywhere on the hills about Austin. 



