(l 9 2) 



£>uercus stellata o Utahcnsis A. DC* as I understand it is 

 a species quite common in Arizona and Utah, but also found 

 in New Mexico. It is characterized by its very broad, 

 obovate leaves, which are deeply lobed, i. <?., three-fourths or 

 two-thirds to the midrib and densely and softly pubescent, 

 almost velvety beneath, dark green and shining above. The 

 fruit is much larger than in Jz>. Gambelii, the cup being 15- 

 18 mm. in diameter. The acorn is ellipsoid or barrel-shaped, 

 obtuse or truncate at the apex, 15-20 mm. long. 



JZhiercus Douglasii ft? Gambclii A. DC.f is the same as 

 J^. Gambelii Nutt. and of Liebm. 



JQtiercus Douglasii y Novomexicana A. DC. J was based 

 on Fendler's nos. 890, 810 and 810b. The first number has 

 well developed leaves, the others are in flower ; the leaves 

 much more deeply divided than in J^. Gambelii, i. e., to near 

 the midrib and the lobes are acutish. The fruit is of about 

 the same size as in that species, but the acorn is more barrel- 

 shaped and rounded at the apex. This oak is very common 

 in Colorado and New Mexico, but also found in Arizona and 

 Utah. 



^iiercus undulata Wats.§ comprises all the forms included 

 by Professor Sargent in J^. Gambelii and J^. undulata. 



Shiercus undulata a Gambelii Engelm. || comprises ^jicrcus 

 Gambelii Nutt., J^. Douglasii y Novomexicana A. DC. and 

 perhaps other forms of this series. 



JQiicrcus Gambclii var. Gunnisonii Wenziglf is the same 

 as J£. alba Gunnisonii Torr. 



£>itcrcus vcnustula Greene ** has been misunderstood by 

 Professor Sargent. In a footnote on page 34 of volume 8 of 

 the Silva, the latter states that PL 367, Fig. 3 represents a 

 leaf of this species. By comparing this with Greene's illus- 



*Prod. 16 2 : 22. 1864. 



f Prod. 16 2 : 23. 1864. 



J Prod. 16 2 : 24. 1S64. 



I Am. Nat. 7 : 302. 1873. 



|| Trans. St. Louis Acad. 3 : 382. 1876. 



iy Jabrb. Bot. Gart. Berlin 3 : 190. 1884. 



** West Amer. Oaks 2 : 69. 1890. 



